JPS63631A - Rule processing method - Google Patents

Abstract

PURPOSE:To obtain a rule processing system which can be adapted even to a control object which requires a control response at a high speed, by executing a processing by deciding that a condition has been formed, in case a state of an equipment group which has been described in the condition of a rule does not exist in a state storage part. CONSTITUTION:In case a character-string of an IF part and a character-string of a state storage part have not coincided with each other, a condition decision processing for handling negatively the character-string whose condition has been formed can be executed, therefore,the negative contents such as 'some equipment is not empty' can be described as a condition 'IFNOT (equipment is empty)', and a surplus character-string such as '(equipment is not empty)' is not required. Accordingly, in case of a rule which has used many negative contents as the condition, the character- string stored in the state storage part can be curtailed remarkably, and a control designation can be determined at a high speed. In this way, even against a condition discriminating control of a control object for which a high speed property is required, the professional program development personnel is not required, and a control engineer himself can execute easily a desired condition discriminating control by describing a controlling system by an IF-THEN rule.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a system 11 consisting of a plurality of equipment such as an automated factory, in which the shape of each equipment is reduced to a total of 'X''1.
It is imported and conditions are judged according to predetermined control logic.

The present invention relates to a rule processing method suitable for condition discrimination control that issues control commands specified by control logic to each piece of equipment when a condition is established.

[Conventional technology]

in general. In the condition discrimination control described in 1-1, a method is used in which the control logic for determining one condition and determining a control command is programmed using a general language such as FORT1+8N and executed by the control device I\H. ing.

[Problem that the invention seeks to solve]

Conventional methods have the problem that it takes time to create and modify programs, and requires specialized programming staff.For this reason, in automated factories, etc., when changing the installation of equipment, etc., it is difficult to control The drawback was that the program could not be changed quickly.

Therefore, we proposed an ``equipment group control method'' that makes it easy to implement and change equipment group control (see Japanese Patent Application No. 79341/1983).

This method sets the control logic Jilt to rTI-” (condition), T
The rule format is "l1l<N (logic, behavior)" (hereinafter, Tli'-THIiN rule father is called a rule)
It is possible to create a control program by writing it in , making it easy to create a control program, and the control logic is easy to understand and change. However, with that method,
This was an affirmative rule processing method in which the condition is satisfied when the character string described as one condition matches the character string representing the target shape in the condition judgment of the IF section. Therefore, in order to describe a negative condition such as that a certain facility is not empty, it is necessary to prepare a string that indicates that the facility is not empty, in addition to the string that indicates that the facility is not empty. As the number of row types increases, it takes time to acquire the equipment status, and as the scale of the target increases, sufficient responsiveness cannot be obtained.

This will be explained below. FIG. 3 is a functional configuration diagram of the equipment group control method. 11 is a rule storage unit, 12 is a rule operation unit, 13 is a status storage unit, 14 is a status import unit, ] 5 is a group of equipment to be controlled. As shown in FIG. 3, the status import unit 14 examines the status of the equipment group 15, converts the status into a character string, and stores it in the status storage unit 13. The rule operation unit 12 extracts rules one by one from the rule storage unit 1 which stores rules, and stores them in the state storage unit 1;
Perform conditional judgment on , and if the condition is satisfied.

The conclusion of the TiI4 inertia section is added to the state storage section 13. ”−
The equipment group control method described above employs a method in which the content of control to be finally executed is determined by repeating one or more processes. In the above process, if a constant such as a numerical value is specified in the parameter part of the rule (the part surrounded by '<' + '>' in the character string), all of the character strings in the IF part are On the other hand, a match with the character string in the state storage unit 13 is determined. - If it matches, the character string of Ti1l<N part is written as it is to the state storage section.

In the case of a rule that includes variables such as W, X, Y, Z, etc. in the parameter section, the string in the state storage section Performs a match judgment. Next, in all the matching character strings in the state storage unit 13, the contents of the parameter part, which is a variable designation in the character string of the IF part, are taken as variable values and temporarily stored.

The character string to be added to the state storage unit 13 is the AN of multiple conditions in the TI=' part of the variable values stored in the parameter part, which is the variable designation in the character string in the N part.
This is a result of substituting a combination of variable values that satisfy the D condition.

As described above, in the conventional method, the condition is established only when a character string identical to one character string in the 1) "fluent" part of the rule exists in the state storage unit 13, and the condition for proceeding with the above processing is set as an affirmative number. Therefore, in order to write the negative condition that the equipment is not empty, in addition to the character string ``(equipment is empty)'', the character string ``( It is necessary to separately prepare "The equipment is not empty)", the number of types of character strings increases, and it takes time to store the equipment (the equipment is not empty) in the state storage unit 13.For example, the Nα3 rule in Figure 1 Like the T+=" part of No. 1 1-1 of
To write a negative condition that palette 1 is not empty, write the string ``(Palette <1.> is not empty)'' in addition to the string ``(Palette <1> is empty).'' It is necessary.Also, T of No. 2 and 11 of Nα5 rule
To describe the condition for selecting a product that has not been created from among the products that can be created, as in part I'', in addition to the character string ``(product <X> is created)'', The string ``)'' is required. For this reason, the condition J
The n importing unit 14 reads ``(palette i ~ <1> is empty) I+,
In addition to the character strings such as ``J product〈C〉has been created)'', ゛(palette ku2〉 is not empty)'=, LL
〉 is not empty)'' is stored in the state storage unit 1.
;Must be stored in 3. Therefore, in the conventional method,
In a rule that describes many conditions with negative contents, the number of types of character strings to be stored in the state storage section L3 increases, and the processing of storing them in the state storage section 13 takes time, making it impossible to obtain sufficient responsiveness. There were drawbacks.

An object of the present invention is to solve such problems and provide a rule processing method that allows easy implementation of condition discrimination control and is also applicable to controlled objects that require high-speed control responses. .

[Means for solving problems]

In order to achieve the above object, the present invention changes the conventional character string in which the condition is met when the character string in the IF part and the character string in the state storage part match to 1! rIn addition to the condition judgment processing that is handled qualitatively, the IF
A condition determination process is added that treats the condition as negative if the character string in the part and the character string in the state storage part do not match. 9. Processing that treats character strings negatively ■1.
The condition identifier “NOT” is specified in the section to distinguish it. Due to this.

Even when describing a negative condition such as that the equipment is not empty, the character string '(equipment is empty)'' is used to write the
OT (equipment is empty)” and PA (equipment is not empty)
There is no need for strings such as ``''.

In Figure 2, the rule in Figure 1 is added to the condition identifier "N 01".
”. In this example, character strings such as “(Palette <1> is not empty) 11,1” (Product <x> has not been created)” are unnecessary, and the <2
> is not empty)11. II (Product (B) is not empty)''
There is no need to store extra character strings such as this in the state storage unit, and processing time is shortened.

[Effect]

In the present invention, the number of types of character strings to be stored in the state storage section is reduced, and when the equipment state is stored in the state storage section 13, +1
−I+ can be shortened.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Note that the terms used in the conventional equipment group control system may be used in the following explanation without explanation, so please refer to Japanese Patent Application No. 58-70341 for details.

FIG. 1 is a block configuration diagram of an equipment group control device showing an embodiment of the present invention.

The control device includes a storage section 601, a control section 602, and an equipment section 60.
3, a status signal line 604, and a command signal line 605. The storage unit 601 further includes a plurality of information storage units, that is, a human output signal-internal code correspondence information storage unit 60
(3, I li' -TIIrr, N) 'J-ru activation information storage section 607, I I-'-TH14N Each area of the rule information storage section 608, internal code information storage section 600, and procedure information storage section 610 is The storage unit 601 is a part that stores data such as internally coded rF-TIIEN rules and a correspondence table between external signals and internal codes. Based on the information displayed, a status signal indicating the state of the equipment group 603 is taken in via the signal line 604, a control command is determined, and a control signal is transmitted to each equipment 60:3 via the signal line 605. .

FIG. 4 is a detailed explanatory diagram of the human output signal-internal code correspondence information storage section 606 in FIG. 1.

FIG. 4(a) is a correspondence table between human input signals and internal codes, and FIG. 4(b) is a correspondence table between internal codes and output signals.

This storage unit 606 includes the status signal line 604 shown in FIG.
This is a part that stores information for an interface between external signals such as the command signal line 605 and internal processing.

The human signal-internal code correspondence table 71 shown in FIG. 4(a) is a table that stores information for converting the status signal a604 into an internal code handled by the control unit 602.

Table 7] contains a status signal line entry area that stores the entry address of the status signal line 604, and a numerical code that stores an internal code that represents the equipment status corresponding to when a signal is generated on the signal line 604. ·area,
It consists of a parameter area and a parameter area. The control unit 602 is.

Based on the data of this table 71, each state j original signal line 6
04, and if a signal is generated, create the corresponding internal code. The internal code created is
It is stored in the internal code information storage section 609. here,
If the signal on the status signal line 604 is binary information of on/off,
The control unit 602 extracts the internal code stored in the table 71 as it is, and assumes that the internal code has been created. For example, the internal code at address H in FIG. 4(,) shows this case. Status f111100
If the information in 004 is numerical information such as barcode reading information, the variable (W,, X, Y, 7, etc.) specified in the parameter part of the internal code stored in the table. , create internal code that writes that information as a value.

For example, the internal code at address A in FIG. 4(a) shows this case. That is, when the numerical information 34 is generated on the status signal line address A.

The control unit 602 has an internal code “1 < 34 >”
Create. The internal code "'L<34)" is, for example.

Work No. 034 at the beginning of the work supply line in the automated factory
This indicates that work has occurred.

Next, at t9 in FIG. 4(b), the internal code-output signal correspondence table 72 outputs a signal to the equipment group 603 via the command signal line 605 based on the internal code representing the control command determined by the control unit 602. Information for transmitting control signals is stored and t9<table. Note that the internal code representing the control command is stored in the internal code information storage 609.

The table 72 is composed of a numerical code area that stores an internal code representing a control command, a parameter partial area, and a command signal line entry area that stores the entry address of the command signal @ 605 to which the control command is to be transmitted. ing. The control unit 602 compares the internal code representing the determined control command with the internal code stored in the table 72, and generates a command signal corresponding to the matched internal code, 1ft605. In that case, in the internal code stored in this table 72, variables (W, X.

Y, Z, etc.) is not specified, an on/off binary signal is output on the corresponding signal line address. An example of a case where a binary signal is output is address (2) in FIG. 4(b). Furthermore, if a variable is designated, the value of the parameter corresponding to the variable in the internal code representing the determined control command is output on the signal line address. For example, when the internal code representing the determined control command is "9<1><34><1>",
Values 34 and 1 are output to the signal line address (:hi) in this order.

The meaning of the internal code ``9<1><34><1>''' is
For example, it is a control command that instructs the transport vehicle 1 of an automated factory to transport the workpiece Nα34 to the station 1.7 FIG. This is an explanatory diagram, and FIG.
) shows the rule group activation condition table, and FIG. 5(b) shows the used rule group number storage area.

This storage unit 607 is a part that stores information specifying a set of rules to be activated according to the state 11J of the equipment group that has occurred. Here, "to be activated" means "to be used when the control unit 602 determines a control command". For example, in the control of an automated factory, when a workpiece occurs at the beginning of a workpiece supply line, a set of rules for assigning the workpiece to a work station is activated, and a transfer command to a trolley and a work command to a work station are issued. decide.

Additionally, when work is completed at a certain work station, a set of rules is activated to dispense the product.

Determine the command to deliver the product to the trolley. As mentioned above, the rule group 8 dynamic condition table 81 includes the equipment group 60 that occurs.
; This is a table that stores information for specifying a rule group to be activated corresponding to each state of 3. This table 81 is a status signal line end area that stores the entry address of the status signal line 604 corresponding to the equipment status whose occurrence is to be monitored. It consists of an activation rule group number area that specifies the number of the rule group to be activated. The usage rule group number storage area 82 is an area that is turned on to store the rule group number that the control unit 6C) 2 should use to determine the control command. The control unit 602 polls each state 4i line 604 based on the data of the rule group activation condition table 81, and when a signal is generated, the signal t! The starting rule group number corresponding to A604 is stored in the used rule group number storage area 82.

Move on to the next process.

FIG. 6 is a detailed explanatory diagram of the rule information storage unit 608 of FIG.
is the rule group directory, and FIG. 6(b) is the rule table.

This storage unit 608 stores TF-Tll in which control logic is written.
! This is a part that stores information regarding iN rules.

IP-TIIFN rules are internally coded and handled.

This storage unit 608 stores internally encoded T F -TI
IF:, Stores N rules. Rules are a group of rules for assigning workpieces to work stations.

Each rule group, such as a rule group for dispensing products, is stored separately.

The rule group directory 91 is composed of a rule group start position area that specifies the start position of each rule group on the rule table 92 in which the TF-TIIFN rules are stored, and a rule group final position area that specifies the final position. be done. Rules are stored for each rule group between the first position and the last position. The number of each rule group corresponds to the row number of the rule group directory 91.

The rule IF section and 'rllEN section are divided and their internal codes are stored in the TF section area and 1'llEN section area, respectively. Each area can store multiple internal codes.

The TF part area consists of a numeric code area that stores the numerical code of the internal code, a parameter part area that stores the parameter part, and a condition 1' y p e area that stores the condition 1'yps of the fl part. The condition Tyρ0 is information for distinguishing whether 11・' gf(is a 1'f constant condition or a negative condition, and the condition 'l' y +)(! Specified in the area .Eng 1;
゛ Department? Specify O for 'r-constant conditions and ] for 11r-constant conditions, respectively. The group EN section area contains the number (1^ code area) that stores the numerical code of the internal code, the parameter 115 minute area that stores the parameter part, and the procedure specified in the TF-1'llEN rule. Consists of a procedural virtuoso that stores the name.Here'
C:2 rule ry 1Je is information for distinguishing between a rule for ultimately determining a control command and other rules. Specify the rule l'ype area. The rule that ultimately determines the control command is designated as 1, and the rule in that pool is designated as 0. This information is stored in the control unit 6
0 2 performs control command determination processing, 1'l
When drawing the conclusions (internal code) of the lEN section one by one,
Use it to distinguish which conclusion represents the control command that will ultimately be obtained.

FIG. 7 is a detailed explanatory diagram of the internal code information storage unit 609 shown in FIG. 1, and FIG. b) is the control command storage table in the seventh
Figure (C) shows the variable value-time storage table, and Figure 10 (d) shows the variable value-time storage table.
1 and 2 respectively show conditional and variable value storage tables.

This storage unit 609 stores the internal code representing the state of the equipment group and the TII[':N
IF-TILF including the section conclusion (internal code) and the finally determined control command (internal code), as well as variables
This is a part that stores information such as the values of variables taken in when processing the N rule. The parameter partial storage table 101, the head pointer table 102, and the continuation pointer table 103 are used in processing internal codes and TF-TIIEN rules that represent the status of equipment groups imported from the outside.

This is a group of work tables for storing the conclusions to be executed sequentially (the internal code specified in the 'rllEN section excluding the finally determined control command). Parameter portion storage table 10] is a table that stores parameter portions of each internal code. The continuation pointer table 103 is a table that stores continuation pointers that connect parameter parts of internal codes having the same numerical code. Continuation pointer table 103 corresponding to each row of parameter partial storage table 101
Each row stores the position of the row in the parameter part storage table 101 in which the parameter part of the next continuous internal code is stored. The end of the continuation parameter portion is indicated by storing zero in continuation pointer table 10:3. Also, the head pointer table 02 is a table that stores the head pointer. The start pointer indicates the beginning of the parameter part of the internal code that has the same numerical code connected by the continuation pointer. Start pointer table 1.0
Each row of 2 corresponds to each numerical code. That is, the numerical code [] is on the first line, the numerical code 2 is on the second line L1, and the numerical code 3 is on the third line. The position of the first row of a series of parameter parts having the same numerical code stored in the parameter part storage table 101 is stored in the start pointer table 102.

Note that the first row of the empty area of the parameter partial storage table 101 is stored in the empty area first pointer area 104, all empty areas are connected with a pointer, and the pointer information is stored in the continuation pointer table 10;3. Manage empty area position vl. The control command total storage table 105 shown in FIG. 7(b) is a table that stores internal codes representing control commands finally determined by the control unit 602. This table [05 includes a numerical code area for storing the numerical code of the internal code of the determined control command, and a parameter partial area for storing the parameter part. Also, the variable value-time storage table IQ61 condition satisfaction variable value storage table 1.0 in Figures 1O(c) and (d)
7 is for performing I F -nipN MilN rules with variables. The variable value-time storage table 106 stores any one internal code specified in the IF section of the rule, and a group of work tables (start pointer table 1).
02, parameter partial storage table 101. When a match is made for the internal code stored in the continuation pointer table 103), the internal code stored in the work table group matches the internal code specified in the IF' part of the rule. This is a table that stores parameter values of the parameter portion of the internal code of the rule, which are taken in as values of variables that respond to the parameter portion of the internal code of the IF section of the rule.

Whether or not the internal code stored in the work table group matches the internal code specified in the IF section of the rule is determined by the numerical code 31 of the internal code and the parameter part excluding parameters with variable specifications. do. The condition satisfaction variable storage table 107 is a table that stores variable values that satisfy the AND condition or NOT condition of the IF section among the imported variable values.

FIG. 8' shows details of the procedure information storage unit 610 in FIG.
+It is an explanatory diagram.

This storage unit 610 is a part that stores the main body of the procedure specified in the I r·'-TI 114'l rule, and the en 1 edge and at 1 nos. The procedure entry table 111 is a 6-procedure entry table consisting of a procedure master area that stores each procedure name, a procedure area that stores the address of that procedure, and an entry area. - Store each \ and the continuation 112 in the address position.

FIG. 1 is a functional block (diζ1) of the control unit E; O',' of FIG.

The control unit 602 includes a rule group activation condition determination unit 12], a setting; 11 state internal code generation unit 122, and a control command determination unit 1.
23, and a control command transmitter 124.

In the information flow, 1201 is the state 13 signal, 1202 is the rule group number, 1203 is the equipment status internal code, and 1204
is a control command internal code, and 1205 is a command signal.

FIG. 10 is an operation flowchart of the control section 6o2.

Below, according to the flow shown in Fig. 10, the steps from Fig. 4 to 9 will be explained.
The operation of the control unit 602 will be described with reference to the configuration up to the figures.

When the control unit 602 starts operating, the rule group starting condition determining unit 121 first starts polling the status signal line 604. In other words, the rule group activation condition determination unit 121
Then, sequentially access the signal lines of the status signal line entries stored in the rule group origination condition table 81 and check whether a signal is generated or not (box 131). If no signal is generated, the signal a604 is generated cyclically and sequentially.
Continue to access. If a signal is generated, set the activation rule group number 1202 specified corresponding to the signal line 604 in the rule group activation condition table 81 in the usage rule group number storage area 82, and set the equipment status internal code generation unit. [Activate 22 (box 132). Is it okay to set it up? The state internal code generation unit 122 first clears the head pointer table 102 to zero and sets the value of the empty area head pointer area 104 to "1". That is, a pointer is set to the beginning of the parameter partial storage table 101. Further, the continuation pointer table 103 is set so that all rows of the parameter partial storage table are connected by pointers starting from the first row. That is, the work table group (start pointer table 102
, parameter partial storage table 101, continuation pointer
Table 103) is set to a state in which no internal code information is stored. Next, the signal lines of the status signal line entries stored in the input signal-internal code correspondence table 71 are accessed in order, and the signal line in which the signal is generated is entered in the human signal-internal code correspondence table 71. Generates the specified internal code (numeric code and parameter part) corresponding to the line (see explanation in Figures 1 and 4)
, stored in the work table group, and the control command determination unit 12
3 (box 133). Here, the generated internal code is stored in the work table group as follows. First, starting from the pointer in the row of the head pointer table 102 corresponding to the numerical code of the generated internal code, the one that matches the parameter part of the generated internal code is stored in the parameter storage table 1.
Continuation pointer table 10 stored in 01
Follow the pointer 3 and find out. - If the matching item already exists, do nothing. If it does not exist, the last pointer that has been followed points to it (points to the continuation pointer before the continuation pointer becomes zero) Parameter partial storage table 10
]'s biography, join it to the first line of the empty area. That is,
The value of the empty area head pointer area 104 is set in the row of the r-continuation pointer table 10;3 corresponding to that row. Next, the parameter part of the internal code to be issued is stored in the first line of the empty area, and that line is made the last line. That is, zero is set in the row of continuation pointer table 10:3 corresponding to that row. Also, the empty area head pointer area 10.1 is set to the next empty area line. The control command determining unit 123 determines an internal code representing the control command in a procedure described later, stores it in the control command storage table 105, and activates the control command transmitting unit 24 (box 34). Note that the status of the equipment group is I F-T.
If the control logic conditions described in the IIEN rules are not satisfied, nothing is stored in the control command storage table 105. The control command transmitter 124 first checks whether the control command internal code is stored in the control command storage table 105.

If nothing is stored, the rule group activation condition determination unit 121 is activated without doing anything, and polling is restarted again (
box 131). If a control command internal code is stored, the internal code is compared with the internal code stored in the internal code-output signal correspondence table 72, and the signal line of the corresponding command signal line entry in the matching row is (See explanation in Fig. 4). Control command storage table] For all internal codes stored in 05,
- After performing the signal transmission process described above, the rule group activation condition determining unit 121 is activated (box 135), and polling is started (box 131).

FIG. 11 is a diagram showing the relationship between functional blocks and tables inside the control command determination unit 123 of FIG. 9.

In FIG. 11, the solid line indicates the flow of control, and the thick line indicates the flow of information. The six-control combination determination unit 123 includes a control command determination control unit 141, a condition determination unit 142, an A N D condition combination generation unit L43. It consists of a NOT condition satisfying variable value selection section, an intermediate conclusion writing section] 45, and a control command writing section 146.

FIG. 12 is an operation flowchart of the control command determining unit 123 of FIG. 11.

When the control command determination section 123 is activated, control is first passed to the control command determination control section 141 .

The control command determination control unit 141 determines a control command as described below using other functional blocks.

The control command determination control unit 141 first clears the control command storage table 105 (box 151) and selects the rule to be used from the rule group directory 91 based on the rule group number stored in the rule group number storage area 82. Find the first and last position in the rule table 92 of (
box 152).

The following processing is performed only for the rules between this first and final position.

[Control Command Determination Control Section] 41, add the internal code of the Tl114N section to the work table group. For all rules of rule type O in the rule table 92, perform the following, respectively. Repeat the process (box 15+4).

If there are no more rules, the control command determination control section 141 activates the control command transmission section 124 after repeating the following process for all rules of rule type in the rule table 92 (box 151!'i). teeth,
A certain rule is taken out and each internal code specified in the IF section of that rule is processed one by one. First, the condition judgment unit 142 is called and a comparison judgment is made between one of the internal codes of the IF section of a certain rule and the internal code stored in the work table group at line-5 (box 1).
5;().

The condition determination unit 142 determines the condition type of the rule table 92.
Depending on the condition type specified in the e area, the condition determination process is changed as shown below.

When the condition 'rypc is O, the condition determination unit 142 determines that T
Starting from the pointer in the row of the first pointer table 102 that corresponds to the numerical value of the internal code of the F section, the pointer of the continuation pointer table 103 is sequentially traced until the continuation pointer value becomes zero. The one that matches is the parameter partial storage table 1
0]. - The match is I
This is performed on the part of the internal code of the F part excluding the parameter specified by the variable, and if it matches, the value of the parameter part of the parameter part in the parameter part storage table Lot corresponding to the parameter part with the variable specification is The value of the specified variable is stored in the variable value-time storage table 106. In this case, each time a parameter part matching the parameter part of the internal code of the IF section is found in the parameter part storage table 101, the variable value is fetched and stored in each row of the variable value-time storage table 106 in order. Note that if there is no variable specification in the parameter section of the parameter section of the internal code of the TF section, no particular variable value is taken in. As a result of the above, if there is at least one item that is -1tt, the condition is satisfied, and if there is none, the condition is not satisfied.

When the condition Tserie is 1, the condition determination unit 142 determines that the condition 1'
Similarly to case 4) when ype is O, tracing starts from the pointer in row 02 of the top pointer table corresponding to the numerical value of the internal code of the TF section, and the process continues one after the other. t pointer
The pointer in the table 103 is followed until the continuation pointer value becomes zero, and it is checked whether a parameter part that matches the parameter part of the internal code of the IF section is stored in the parameter part storage table +01. -Is the result I? ' Excluding the parameter specified by the variable in the parameter part of the internal code of the section. If -, the parameter part storage table 10 corresponds to the parameter part with the variable specified.
The value of the internal parameter section 1 is stored in the variable value-time storage table 106 as the value of the variable specified in the T[para section.

In this case, the IF in the parameter partial storage table ]0]
Every time a variable value is found that matches the parameter part of the internal code of the section, the variable value is fetched and stored in the variable value-time storage table 1.
06 in order. Note that if there is no variable specification in the parameter section of the parameter section of the internal code of the IF section, no particular variable value is taken in. As a result,
If there is no variable specified in the parameter part, the condition type
Contrary to the case of Q, the condition is determined to be satisfied when there is no - match, and the condition is determined to be unsatisfied when there is a - match. In addition, if a variable is specified in the parameter part, the process returns to the control command determination control unit 141 as a one-way condition, regardless of whether it matches or does not match (N O'I' of other Type O
Conditions without this Type, 1. (/') N O'
The process of generating a variable value that combines the conditions with I' and adds h21 to the conditions of the entire IF section is performed by the NOT condition satisfying variable value selection section 147, as will be described later).

As a result of the above, if the condition is not satisfied, the control command determination control section 141 takes out the next rule and starts determining the condition again (box] 54). If the condition is satisfied and the IF section that just made the condition judgment is condition Type 0 and there is a variable specification in the parameter section of the internal code, the AND condition combination generation section 143 is called (box 155), and the IP section is executed according to the procedure described below. ANr) Generate a combination of variable values that satisfy the condition (box 156), and the combination result is stored in the 1-condition satisfaction variable value storage table 107. Also, if the TF section that has just performed the condition judgment is condition Typei and there is a variable specification in the parameter section.

Box 1 to call NOT condition variable value selection section 147
516) Select a variable value that satisfies the NOT condition of the IF section according to the procedure described below (box 1517).

The selection result is stored in the condition h variable value storage table 107 in the same way as the result of the combination of variable values that satisfy the AND condition.

Above A　N　]) Condition combination generation unit】43, or.

As a result of NOT condition satisfaction variable value selection section 47-
When there is no variable value that satisfies the condition, the control command determination control unit 141 abandons the rule currently being processed, takes out the next rule, and starts condition determination again (box 157). If there is no parameter section with a variable specification in the parameter section of the internal code of the
4°156). The control command determination control unit 141 performs the processing up to this point for all internal codes specified in the IF section of the rule, and then moves on to the next processing (box 15J1). First, the control command determination control unit 141 extracts the internal code of the 1'11EN part of the rule currently being processed. If the procedure name is specified for the internal code in the rule table 92, the control command determination control unit 141 selects the procedure start! The specified procedure is started by calling the l1IJ unit 144 (box 1510). If no procedure name is specified, the procedure initiator 144 is not called (box 159). The procedure starting unit 144 searches the procedure entry table 111 for the entry address of the procedure with the procedure name specified for the internal code, and executes the procedure at that address using the condition satisfaction variable value storage table 107 as an argument =1- file.

In the procedure, Article 1 PP; 12-leg variable value storage table 10
The value of 7 can be changed arbitrarily. Next, the control command determination control unit [41 is the type of rule currently being processed.
Check e (Rule Type in rule table 92), and if Type is 0, intermediate score,! 0 writing part】45
Calls the group of rules currently being processed [(One internal code extracted from the N section is stored in the work table group (box +511). If Type is 1, calls the 5 control command writing section 146. Then, it is stored in one internal code control command storage table 105 extracted from the TH14N part of the rule currently being processed (box 15).
2). The control command determination control section 141 repeats the processing up to this point for all internal codes designated as the TIIEN section (box +513). First, if there is a parameter section with a variable specification in the internal code to be stored, the intermediate conclusion writing error section 145 stores the contents of the parameter section in the condition satisfaction variable value storage table 1.07. Generates internal code that replaces the corresponding variable value in a certain line. If there is no parameter section with variable specifications, use the internal code to be stored as is. Next, intermediate conclusion writing section L 45
stores the generated internal code in a group of work tables. This storage method is the same as when the above-mentioned equipment status internal code generating section 122 stores the generated internal code in the work table group. In this case, similar to the method described above, the internal code you are trying to store is
If the internal code is already stored in the work table group, the internal code will not be newly stored. Note that the following process is performed using the condition satisfaction variable value storage table]07
Iterate through all rows containing variable values. The control command writing unit 146 is an intermediate conclusion writing unit]
45, first generate the internal code to be written.

Next, the internal codes are stored in order from the beginning of the control command storage table 105. In this case, if the internal code to be stored already exists in the control command storage table 105, that internal code is not newly written. Also, like the intermediate conclusion writing section 145, the above process is repeated for all rows in which variable values are stored in the condition satisfying variable value storage table 107.

13 and 14 are operation flowcharts of the ANI) condition combination generation unit 14:3 of FIG. 11.

The A N D condition combination generation unit 143 generates a combination of variable values taken in when a new condition judgment is made between one internal code in the IF section and the internal code stored in the work table group. (Variable value-time storage table 106
The combination of the values of variables that satisfy the A N I) condition or the NOT condition in the internal code of the IF section that has completed the condition judgment so far (
(stored in the condition satisfaction variable value storage table 107)
A new combination of variable values that satisfies the ANT) conditions, including the internal code that performed the condition determination, is created (stored again in the 1-condition satisfaction variable value storage table 107). That is, as shown in Figure 1:3, for all combinations of each row of the variable value-time storage table 106 and each row of the AND condition satisfaction variable value storage table 107,
ANr) Check whether the condition is satisfied or not. Box 16
]), if satisfied, generates a new combination of variable values that adds h2i to the AN+”) condition and stores it (box 162).Finally, the new combination of variable values that has been memorized is generated again. It is stored in the condition satisfaction variable value storage table 107 (box 163).Here, when the condition ANT,) is satisfied, the variable value-time storage table 1
This is a case where the values of variables with the same variable name match on the 06 side and the condition satisfying variable value storage table 107 side, or the variable on the - side has no value (that is, a blank appears). In addition, the combination of variable values that also satisfy the new ANI') condition is the combination of AND
In a set of combinations that satisfy the conditions, variables with matching variable values are generated by changing them to the matching values, and variables whose negative side is blank are changed to the value of the variable that has a value.

FIG. 17 is a diagram showing an example of generating a variable value combination satisfying the A N D condition, in which FIG. 17 (Q) is a variable value-time storage table, and FIG. 17 (b) and (Q) are the conditions This is a satisfaction variable value storage table.

In this example, the variable value in the first row of the variable value-hour storage table (W=a, W=
Ni blank X=Q+'! = b tZ=blank) satisfies the ANr) condition, and a new combination of variable values that satisfies the A N +) condition W = Fl gX=b
, Y=b, Z=ni blank, which is generated in the first row of the condition satisfaction variable value storage table.

FIG. 15 is a diagram showing the processing contents of the NOT condition satisfying variable value selection unit 147 of FIG. 11.

In FIG. 15, 608. f;09 is the third;
In the T F-TIIr4N rule information storage section and internal code information storage section in the figure, 106 and 107 are side leg variable value storage tables of the variable value-time storage table 106 in FIG. 11, respectively. Note that 1.50 is an example of a rule stored in the IF-T II E N rule information storage section, and 151 is information representing the status of the equipment group and the conclusion of the TIIEN section stored in the internal court information storage section. Here, in order to make it easier to understand, each is expressed as a character string (actually, as already explained, they are separated and stored in internal code, parameter parts, etc.).

The NOT condition satisfaction variable value selection unit 147 selects other Type
Processing is performed to generate a variable value that satisfies the condition for the entire fF section by combining the condition without NOT of O and the condition with NOT of Type 1. Rule 150
Explain using. The NOT condition satisfaction variable value selection unit 147 selects the second condition [condition 1] from among the work that can be processed at each station, which has been imported under the first condition "IF (station <x> can work <Y>)". r F NOT'
(Station〈x〉is currently working)'' is removed, and the station is not currently working, so the process that selects the work that can be processed is performed.In other words, NO'' 147 is a step value that satisfies the condition that the work can be processed at the station stored in the condition satisfying variable value storage table 107 and a variable value that satisfies the condition that the station in progress is stored in the variable value-time storage table 106. Variables with the same variable name, that is, those whose values match at the station.

The variable values that satisfy the condition that the remaining stations that are processable and work are removed from the condition-satisfying variable value storage table J07 are stored again in the 1-condition source variable value storage table 1071.

N C) 'I' condition variable value selection section 1 explained above
The operation flowchart of No. 47 is shown in FIG.

The NOT conditional variable value selection unit 147 takes out one variable value from the 1-condition source variable 111' [storage table] 07, (box IF;, 1), and selects the variable value and the variable value -
It is determined whether or not the values of variables with the same variable name match each variable value stored in the time storage table 1.06 (boxes 162 and 163).

- If it matches, the condition %'tI bar variable value storage table 1
Take out the next variable value from 07 and repeat the above judgment (
Box IFE4), condition satisfaction variable value storage table 10
The variable value extracted from 7 is the variable value-time storage table 1.
If the value of a variable with the same variable name as '06 does not match (Box 1.65), the variable value is temporarily stored (Box 166), and the above process is carried out in the condition-satisfying variable value storage table 107. (Box 167), and finally, the temporarily stored variable values are stored again in the condition satisfying variable value storage table 107 (Box 168).

In the example of FIG. 15, one condition source foot variable value storage table 107
The variable values stored in the second and third rows of the common variable It is stored in the storage table 10'7.

In this way, in this embodiment, the condition of the IF section can be handled negatively, and the amount of information jK stored in the internal code information storage section 609 can be significantly reduced. This makes it possible to apply rule-based condition discrimination control even to the control of a controlled object that requires a high-speed response, whereas the control response speed is far below that of the conventional method.

[Effect of the Invention 3 As explained above, in the present invention, if the character string in the IF part and the character string in the state storage part do not match, the condition determination process is performed in which the condition is met and the character string is treated negatively. be able to. As a result, the content of the negation such as "Aro equipment is not empty" can be written as the condition "T I?N0T (equipment is empty)", and the extra character string "(equipment is not empty)" is not required. Therefore, the above negation In the case of a rule that uses a large number of conditions, the number of strings stored in the state memory can be significantly reduced.
Control designation can be determined faster than before.

Therefore, for condition discrimination control of controlled objects that require high speed, there is no need for specialized program development personnel, and control engineers can write control methods by themselves using TF''-THI?N rules and perform desired condition discrimination control. can be easily done.

[Brief explanation of the drawing]

Fig. 1 is a block configuration diagram of an equipment group control device showing an embodiment of the present invention, Fig. 2 is a diagram showing an example of writing rules using condition identifiers, and Fig. 3 is a function of a conventional equipment group control method. Figure 4 is a detailed diagram of the human output signal-internal code correspondence information storage unit, Figure 5 is a detailed diagram of the I+”-TIII:N rule activation information storage unit, and Figure 6 is a detailed diagram of the T F-TIIHN A detailed diagram of the rule information storage section, FIG. 7 is a detailed diagram of the internal code information storage section, FIG. 8 is a detailed diagram of the procedure information storage section, FIG. 9J is a functional block diagram of the control section, and FIG. 10 is a detailed diagram of the control section. 11 is a diagram showing the relationship between the functional blocks of the control command determining section and each table, FIG. 12 is an operational flowchart of the control command determining section, and FIG. 13 is an operational flowchart of the ANI) condition combination generating section. , Fig. 14 shows an example of the generation of combinations of variable values that satisfy the A N I) condition combination generation unit and the process content of the Jn selection unit. Figure 16 shows N
It is an operation flowchart of OT condition satisfaction variable value.

Claims (1)

[Claims] 1. A rule storage unit that stores rules consisting of conditions and conclusions for equipment groups; a status storage unit that stores the status of the equipment group and contents concluded by the rules; and information stored in the status storage unit and the rule storage unit. In a rule processing method that determines a control command for a group of equipment, the rule processing method includes a rule operation unit that compares and matches the conditions stored in A rule processing method characterized in that if the state of the equipment group described in the above does not exist in the state storage section, processing is performed as a condition is satisfied.