JPH06219656A - Speed control device of elevator - Google Patents

Abstract

(57) [Summary] [Purpose] The speed control of an elevator that can easily change the acceleration of the deceleration command signal without adding or exchanging reference table data for speed command calculation, and that can handle a large number of accelerations. Provide a device. [Configuration] Based on the remaining distance to the floor position of the target floor and the reference table data for speed command calculation stored in the ROM that is calculated with a predetermined acceleration (reference acceleration), the elevator car is smoothly moved to the target floor. In addition to extracting a smoothly changing deceleration command signal for stopping the landing on the vehicle, an acceleration correction value pre-calculated according to the acceleration and stored in the ROM is selected, and the acceleration of the deceleration command signal is selected based on this acceleration correction value. The speed of the electric motor for driving the elevator is controlled in accordance with the corrected normal deceleration command signal, and the elevator car is decelerated and landed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator speed control device, and more particularly to an elevator speed control device for smoothly decelerating and stopping an elevator car to a destination floor.

[0002]

2. Description of the Related Art A conventional technique related to an elevator speed control device of this type is disclosed in Japanese Patent Laid-Open Publication No. 57-9678. FIG. 8 is a block diagram showing a configuration of a conventional elevator speed control device. In the figure, 1
Is an elevator car, 2 is a main rope, and an elevator car 1 is hung in a fishing bottle shape at one end of the main rope 2. 3 is a sheave around which the main rope 2 is wound, and 4 is a counterweight, which is connected to the other end of the main rope 2 and is hung in a fishing bottle shape.
5 is an electric motor for driving the sheave 3, 6 is a pulse generator for generating a pulse 6a according to the number of revolutions of the electric motor 5, 7
Is a pulse counter that counts the generated pulses 6a and outputs the count value as the car position 7a of the elevator car 1.
A remaining distance calculator 8 calculates and outputs the remaining distance 8a to the floor position of the target floor every time the car position 7a is taken in by the pulse counter 7. 9A and 9B have different accelerations αA and αB
It is the reference table data for speed command calculation which is calculated in advance and stored in the ROM. Reference numeral 10 denotes a deceleration command signal generating means, which selects one speed command calculation reference table data (in this case, 9A or 9B) by acceleration, and selects the selected speed command calculation reference table data and the remaining distance 8a.
Then, the deceleration command signal 10a is extracted and output. Reference numeral 11 denotes a speed control unit, which controls the electric motor 5 based on the deceleration command signal 10a.
The speed control signal 11a for controlling the speed is output.

Next, the operation of the speed control device for an elevator having the above structure will be described. First, when the electric motor 5 for raising and lowering the elevator car 1 starts driving, the electric motor 5
The pulse generator 6 engaged with is also activated to generate the pulse 6a. This pulse 6a is counted by the pulse counter 7, so that the car position 7a indicated by the count value is taken into the remaining distance calculator 8. The remaining distance calculator 8 takes in the car position 7a that changes according to the lifting operation of the elevator car 1, calculates the remaining distance 8a to the floor position of the target floor, and outputs it to the deceleration command signal generating means 10. The deceleration command signal generation means 10 takes in the remaining distance 8a that is sequentially updated, and calculates the speed command reference table data 9A and 9B by acceleration.
Is selected, the deceleration command signal 10a for the remaining distance 8a is extracted from the selected speed command calculation reference table data, and is output to the speed control unit 11. The speed control unit 11 outputs a speed control signal 11a for controlling the speed of the electric motor 5 based on the deceleration command signal 10a. Incidentally, such an elevator speed command signal generating means is disclosed in the above publication.

[0004]

In the conventional elevator speed control apparatus as described above, when it is desired to change the acceleration of the deceleration command signal 10a, the acceleration corresponding to the number of reference table data for speed command calculation (in this case, αA, αB). ) I could only choose. Further, when it is desired to select an acceleration having a value different from the accelerations αA and αB, the reference table data for speed command calculation must be added or replaced.

Therefore, in such a method, only a limited acceleration can be selected, and when the table data is added, the entire apparatus becomes expensive, and the table data exchange is troublesome.

Therefore, according to the present invention, the speed control of the elevator can easily change the acceleration of the deceleration command signal and can cope with a large number of accelerations without adding or exchanging the reference table data for speed command calculation. It is an object to provide a device.

[0007]

According to a first aspect of the present invention, there is provided an elevator speed control device, wherein pulse generation means for generating a pulse according to traveling of an elevator car, and the generated pulse are counted to determine a car position. Based on the pulse counting means, the remaining distance calculating means for obtaining the remaining distance from the car position to the floor position of the destination floor, and the remaining distance and the predetermined speed command calculation reference table data, the elevator car is moved to the destination floor. In addition to extracting the deceleration command signal for smoothly stopping the landing, a predetermined acceleration correction value corresponding to the acceleration is selected, and the acceleration of the deceleration command signal is corrected by this acceleration correction value to obtain the normal deceleration command signal. And a speed control means for controlling the speed of an electric motor for driving an elevator according to the normal deceleration command signal. That.

According to a second aspect of the present invention, there is provided an elevator speed control device, in addition to the pulse generating means, the pulse counting means, the remaining distance calculating means and the normal deceleration command signal generating means, which are the same as those in the first aspect, the preceding pattern generation The preceding pattern generating data is extracted from the table data, the acceleration of the preceding pattern generating data is corrected by a predetermined acceleration correction value, and the preceding pattern preceding the normal deceleration command signal by the delay time of the control system is detected. It is provided with a preceding pattern generating means for generating and a speed control means for controlling the speed of the electric motor for driving the elevator according to the preceding pattern.

[0009]

In the speed control device for an elevator according to the first aspect of the present invention, the deceleration command signal is generated based on the remaining distance from the car position of the elevator car to the floor position of the target floor and predetermined speed command calculation reference table data. Extracted, the speed of the electric motor for driving the elevator is controlled according to the normal deceleration command signal in which the acceleration of the deceleration command signal is corrected by a predetermined acceleration correction value, so that the elevator car can be smoothly landed and stopped at the destination floor. The acceleration of the deceleration command signal can be appropriately changed without adding or exchanging the reference table data for speed command calculation.

In the speed control device for an elevator according to a second aspect of the present invention, the normal deceleration command signal is obtained in the same manner as in the first aspect, and the acceleration of the preceding pattern generation data extracted from the preceding pattern generation table data is calculated. Corrected by a predetermined acceleration correction value, based on this data to generate a preceding pattern that precedes the normal deceleration command signal by the delay time of the control system, and control the speed of the electric motor for elevator drive according to this preceding pattern, Since the elevator car will be smoothly landed on the destination floor,
Since it is not necessary to provide the preceding pattern generation table data for each acceleration, a highly accurate landing operation can be performed.

[0011]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram showing the structure of an elevator speed control device according to a first embodiment of the present invention. In the figure, the same reference numerals and symbols as those of the above-mentioned conventional example indicate the same or corresponding components as those of the above-mentioned conventional example. In the figure, 9 is a reference table data for speed command calculation according to the present embodiment,
Data is created by the relational expression between the remaining distance and the speed and stored in the ROM. Reference numeral 12 denotes a normal deceleration command signal generating means for outputting the normal deceleration command signal 12a to the speed control unit 11, which is composed of a microcomputer or the like.

First, the speed command calculation reference table data 9 of this embodiment will be described. Let S be the remaining distance to the destination floor, v is the speed, α is the acceleration, TL is the landing time, and SL is the distance required for landing (hereinafter referred to as the landing distance). There is a relationship of 1, 2, 3. However,
^ In the formula indicates exponentiation. SL = 1/6 · αTL ^ 2 (Equation 1) In S> SL, v (S) = √ {2α (S-1 / 24α · TL ^ 2)} (Equation 2) In S ≦ SL, v (S) ) = (9/2 · α / TL) ^ (1/3) · S ^ (2/3) (Equation 3) Here, α in Equations 2 and 3 is the reference acceleration αF, and the desired acceleration is α. , Equations 2 and 3 show that the velocity v'in α is v '(S) = √ {2αF · (S-1 / 24α · TL ^ 2)} × √ {α / αF} in S> SL. Formula 4) In S ≦ SL, v ′ (S) = (9/2 · αF / TL) ^ (1/3) · S ^ (2/3) × α / αF (Equation 5). The speed command calculation reference table data is created from the equations 4 and 5 in accordance with the expressions 6 and 7, and the deceleration command signal v (S) for the remaining distance S is calculated from the speed command calculation reference table data shown in the expressions 6 and 7. Extracted acceleration correction value √ {α / α
F}, α / αF is multiplied to obtain the normal deceleration command signal v ′ for the acceleration α. Therefore, the reference table data for speed command calculation is created with the standard acceleration αF, and as a constant for each acceleration, the landing distance 1/6 · αTL ^ 2, the remaining distance correction amount 1 / 24α · TL ^ 2, the acceleration correction value √ { α / αF},
Only α / αF need be provided. FIG. 2 is a characteristic diagram showing the difference in acceleration between the deceleration command signal and the normal deceleration command signal, and FIG. 2 shows the difference between the deceleration command signal at the reference acceleration and the acceleration-corrected normal deceleration command signal. v (S) = √ {2αF · (S−1 / 24α · TL ^ 2)} (Equation 6) v (S) = (9/2 · αF / TL) ^ (1/3) · S ^ ( 2/3) (Equation 7)

Next, the operation of the elevator speed control apparatus of the present embodiment shown in FIG. 1 will be described with reference to the flow charts of FIGS. FIG. 3 is a flowchart showing an operation procedure of the remaining distance calculator 8 of the elevator speed control device according to the first embodiment of the present invention. In the figure, first, in step S31, the car position 7a counted by the pulse counter 7 is counted.
Enter. Then, in step S32, the remaining distance from the car position 7a to the floor position of the target floor is calculated, and step S
At 33, the remaining distance 8a is output to the normal deceleration command signal generating means 12.

FIG. 4 is a flow chart showing the operation procedure of the normal deceleration command signal generating means 12 of the speed control device for the elevator according to the first embodiment of the present invention. In the figure, first, in step S41, the remaining distance calculator 8 inputs the remaining distance 8a. In step S42, it is determined whether or not it is within the landing distance by referring to the landing distance SL, which is a constant provided for each acceleration, from the input remaining distance 8a. If within the landing distance (remaining distance S ≦ landing distance SL), step S46
Then, the deceleration command signal for the remaining distance 8a is extracted from the deceleration command signal calculation reference table data shown in Expression 7, the acceleration correction value α / αF is selected by the acceleration in step S47, and this acceleration correction value is multiplied to obtain the normal value. Deceleration command signal 12
Calculate a. Also, in the determination of step S42,
If it is outside the landing distance (remaining distance S> landing distance SL), the process proceeds to step S43, and the remaining distance correction amount is subtracted from the input remaining distance 8a to obtain the corrected remaining distance. And step S4
In step 4, the deceleration command signal for the remaining distance 8a is extracted from the speed command calculation reference table data shown in equation 6 from the corrected remaining distance, and in step S45, the acceleration correction value √ {α / α
F} is multiplied to calculate the normal deceleration command signal 12a. In step S48, step S45 or step S47
The normal deceleration command signal 12a obtained in step 3 is output to the speed controller 11. The speed control unit 11 outputs a speed control signal 11a that controls the speed of the electric motor 5 based on the regular deceleration command signal 12a.

As described above, the speed control device for an elevator according to the present embodiment has the pulse 6 according to the traveling of the elevator car 1.
a pulse generator 6 (pulse generating means) for generating a, and a pulse counter 7 (pulse counting means) for counting the generated pulses 6a to obtain a car position 7a of the elevator car 1.
Remaining distance from the car position 7a to the floor position of the destination floor 8
A remaining distance calculator 8 (remaining distance calculating means) for performing the operation of FIG. 3 for obtaining a, and a reference for speed command calculation stored in the ROM calculated by the remaining distance 8a and a predetermined acceleration (reference acceleration). Based on the table data 9 (see formulas 6 and 7), a smoothly changing deceleration command signal for smoothly stopping and stopping the elevator car 1 at the target floor is extracted, and is preliminarily calculated according to the acceleration ROM The acceleration correction values α / αF and √ {α / αF} stored in the table are selected, the acceleration of the deceleration command signal is corrected by this acceleration correction value, and the normal deceleration command signal 12a is output.
And the speed control unit 11 (speed control means) for controlling the speed of the electric motor 5 for driving the elevator in accordance with the normal deceleration command signal 12a.
It has and.

That is, the elevator speed control apparatus according to the present embodiment creates the speed command calculation reference table data 9 in advance with a predetermined acceleration (reference acceleration), and uses the speed command calculation reference table data 9 as the speed command calculation reference table data 9. Remaining distance to the destination floor 8
Normal deceleration command signal 12 obtained by extracting the deceleration command signal from a and correcting the acceleration of this deceleration command signal with the acceleration correction value.
The elevator car 1 is decelerated and landed at a.

Therefore, the acceleration of the deceleration command signal can be appropriately changed without adding or exchanging the reference table data for speed command calculation, so that the elevator car 1 can be smoothly landed on the target floor. Can be made. As a result, in the past, since reference table data for speed command calculation was created for each acceleration, there was a large amount of data due to the exchange of table data and the addition of table data. Just provide
It is possible to easily change the acceleration of the deceleration command signal and to change a large number thereof without adding or exchanging the reference table data for speed command calculation, and to realize an inexpensive elevator speed control device.

<Second Embodiment> FIG. 5 is a block diagram showing the structure of an elevator speed control apparatus according to a second embodiment of the present invention, which is provided with a preceding pattern generating means.
In the figure, the same reference numerals and symbols as those of the above-mentioned conventional example and the first embodiment indicate the same or corresponding components as those of the above-mentioned conventional example and the first embodiment. In the figure, 13 is the preceding pattern generation table data, which is created by a predetermined relational expression and is stored in the ROM. Reference numeral 14 is a preceding pattern generating means for outputting the preceding pattern 14a to the speed controller 11, and is composed of a microcomputer or the like. FIG. 6 is a characteristic diagram showing a difference between the normal deceleration command signal and the acceleration of the preceding pattern.

First, the preceding pattern generation table data 13 of this embodiment will be described. When the acceleration is α, the landing time is TL, the time is t, the delay time is τ, the speed is v, and the preceding pattern generation data is Vτ, the speed v (t) at time t is v (t ) = Α (t−TL) + αTL / 2 (Equation 8) In t ≦ TL, v (t) = α / (2TL) · t ^ 2 (Equation 9) The preceding pattern v (t−τ) is t > Τ + TL v (t−τ) = α (t + τ) −αTL / 2 (Equation 10) When t ≦ τ + TL v (t−τ) = α / (2TL) · (t−τ) ^ 2 (Equation 10) 11) is represented. Since the preceding pattern generation data Vτ (t) is v (t) -v (t-τ), Vτ (t) = ατ for t> τ + TL (Equation 12) Vτ (t) for TL <t ≦ τ + TL = {-T ^ 2 / (2TL) + t + t [tau] / TL-TL / 2- [tau] 2 / (2TL)} [alpha] (Equation 13) When t≤TL, V [tau] (t) = (2t [tau]-[tau] 2) / ( 2TL) α (Equation 14). With reference acceleration αF and desired acceleration α, equations 12 and 1
When 3 and 14 are expanded, Vτ (t) = αF · τ × α / αF (Equation 15) Vτ (t) = {-t ^ 2 / (2TL) + t + tτ / TL-TL / 2-τ ^ 2 / ( 2TL)} αF × α / αF (Equation 16) Vτ (t) = (2tτ−τ ^ 2) / (2TL) αF × α / αF (Equation 17) From equations 15, 16 and 17, table data for preceding pattern generation is created by equations 18, 19 and 20, and equation 1
The preceding pattern generation data for time t is extracted from the preceding pattern generation table data shown by 8, 19, 20 and is multiplied by the acceleration correction value α / αF to correct the acceleration α to obtain the preceding pattern generation data. The preceding pattern 14a is obtained by subtracting the preceding pattern generation data from the normal deceleration command signal. Therefore, it is only necessary to create the preceding pattern generation table data with the reference acceleration αF and provide the acceleration correction value α / αF as a constant for each acceleration. Vτ (t) = αF · τ (Equation 18) Vτ (t) = {-t ^ 2 / (2TL) + t + tτ / TL-TL / 2-τ ^ 2 / (2TL)} αF (Equation 19) Vτ (T) = (2tτ−τ ^ 2) / (2TL) αF (Equation 20)

Next, the operation of the elevator speed control apparatus of this embodiment shown in FIG. 5 will be described with reference to the flow charts of FIGS. 3, 4 and 7. Since the operation of FIGS. 3 and 4 is the same as that of the first embodiment, the description thereof is omitted here. FIG. 7 is a flow chart showing the operation procedure of the preceding pattern generating means 14 of the elevator speed control system according to the second embodiment of the present invention. In the figure, first, step S
At 71, the normal deceleration command signal 12a is input from the normal deceleration command signal generating means 12. Next, at step S72, time t
The table data 13 for generating the preceding pattern is selected by. When t> τ + TL, the process proceeds to step S73, and equation 1
The preceding pattern generation data is extracted from the preceding pattern generation table data 13 shown in FIG. TL <t ≦ τ
If it is + TL, the process proceeds to step S74, and the preceding pattern generating data is extracted from the preceding pattern generating table data 13 shown in Expression 19. When t ≦ TL, the process proceeds to step S75, and the preceding pattern generating data is extracted from the preceding pattern generating table data 13 shown in Expression 20. Then, in step S76, the acceleration correction value α / α is added to the preceding pattern generation data extracted at time t.
The acceleration is corrected by multiplying by F. In step S77, the preceding pattern generation data is subtracted from the normal deceleration command signal 12a to calculate the preceding pattern 14a. Step S78
Then, the calculated preceding pattern 14 a is output to the speed control unit 11. The speed control unit 11 outputs a speed control signal 11a that controls the speed of the electric motor 5 based on the preceding pattern 14a.

As described above, the speed control device for an elevator according to this embodiment is similar to the pulse generator 6 of the first embodiment.
In addition to (pulse generating means), pulse counter 7 (pulse counting means), remaining distance calculator 8 (remaining distance calculation means) for performing the operation shown in FIG. 3, and normal deceleration command signal generating means 12 for performing the operation shown in FIG. , The preceding pattern generation data (see equations 18, 19, and 20) is extracted at a time t from the preceding pattern generation table data 13 calculated in advance by a predetermined acceleration (reference acceleration) and stored in the ROM. The acceleration α of the pattern generation data is corrected in advance by the acceleration correction value α / αF stored in the ROM, and based on this data, the control system until the elevator car 1 actually moves with respect to the speed command value. The preceding pattern generation means 14 for performing the operation of FIG. 7 for generating the preceding pattern 14a that precedes the normal deceleration command signal 12a by the delay time in consideration of the response delay time, and Speed control unit 1 for speed control of the electric motor 5 for an elevator drive according to the prior pattern 14a
1 (speed control means).

That is, the elevator speed control device according to the present embodiment is similar to the first embodiment, and the normal deceleration command signal 1
2a is generated, and the preceding pattern generating means 14 creates the preceding pattern generating table data 13 at the reference acceleration and corrects it by the acceleration correction value so that the delay time of the control system is longer than that of the normal deceleration command signal 12a. The preceding pattern 14a preceding only by the preceding pattern 14a is generated, the speed of the electric motor 5 for driving the elevator is controlled according to the preceding pattern 14a, and the elevator car 1 is decelerated and landed.

Therefore, also in this embodiment, the acceleration of the deceleration command signal can be properly changed without adding or exchanging the reference table data for speed command calculation. Moreover, without providing the preceding pattern generation table data for each acceleration, the delay time of the response of the control system until the elevator car 1 actually moves with respect to the speed command value can be taken into consideration, and a highly accurate landing operation can be performed. .

[0024]

As described above, the speed control device for an elevator according to the invention of claim 1 has a pulse generating means, a pulse counting means, a remaining distance calculating means, a normal deceleration command signal generating means, and a speed control. Means for extracting the deceleration command signal based on the remaining distance from the car position of the elevator car to the floor position of the target floor and the predetermined speed command calculation reference table data, and determining the acceleration of the deceleration command signal as the predetermined value. The reference table data for speed command calculation is added or exchanged by controlling the speed of the motor for driving the elevator according to the normal deceleration command signal corrected by the acceleration correction value and smoothly stopping the elevator car from landing on the target floor. Even without it, the acceleration of the deceleration command signal can be changed appropriately, so that the elevator car can be smoothly landed and stopped at the destination floor. It can be realized at low cost speed control device of the motor.

According to a second aspect of the present invention, there is provided an elevator speed control device, which includes pulse generating means, pulse counting means, remaining distance calculating means, normal deceleration command signal generating means, preceding pattern generating means, and speed control means. In addition to obtaining the normal deceleration command signal in the same manner as in claim 1, the acceleration of the preceding pattern generation data extracted from the preceding pattern generation table data is corrected by a predetermined acceleration correction value, and based on this data Generating a preceding pattern that precedes the normal deceleration command signal by the delay time of the control system,
By controlling the speed of the electric motor for driving the elevator according to this preceding pattern and stopping the elevator car from landing smoothly at the target floor, it is not necessary to provide table data for preceding pattern generation for each acceleration, Since the delay time of the response of the control system until the elevator car 1 actually moves can be considered, a highly accurate landing operation can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a speed control device for an elevator that is a first embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a difference in acceleration between a deceleration command signal and a normal deceleration command signal.

FIG. 3 is a flowchart showing an operation procedure of a remaining distance calculator of an elevator speed control device according to a first embodiment and a second embodiment of the present invention.

FIG. 4 is a flowchart showing an operation procedure of a normal deceleration command signal generating means of the speed control device for the elevator according to the first and second embodiments of the present invention.

FIG. 5 is a block diagram showing a configuration of an elevator speed control device according to a second embodiment of the present invention.

FIG. 6 is a characteristic diagram showing a difference between the normal deceleration command signal and the acceleration of the preceding pattern.

FIG. 7 is a flow chart showing an operation procedure of the preceding pattern generating means of the speed control device for an elevator according to the second embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a conventional elevator speed control device.

[Explanation of symbols]

 1 elevator car 2 main rope 3 sheave 4 balancing weight 5 electric motor 6 pulse generator 6a pulse 7 pulse counter 7a car position 8 remaining distance calculator 8a remaining distance 9 speed command calculation reference table data 11 speed control unit 11a speed Control signal 12 Regular deceleration command signal generating means 12a Regular deceleration command signal 13 Leading pattern generation table data 14 Leading pattern generating means 14a Leading pattern

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 22, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

<Second Embodiment> FIG. 5 is a block diagram showing the structure of an elevator speed control apparatus according to a second embodiment of the present invention, which is provided with a preceding pattern generating means.
In the figure, the same reference numerals and symbols as those of the above-mentioned conventional example and the first embodiment indicate the same or corresponding components as those of the above-mentioned conventional example and the first embodiment. In the figure, 13 is the preceding pattern generation table data, which is created by a predetermined relational expression and is stored in the ROM. Reference numeral 14 is a preceding pattern generating means for outputting the preceding pattern 14a to the speed controller 11, and is composed of a microcomputer or the like. FIG. 6 is a characteristic diagram showing the difference between the normal deceleration command signal and the preceding pattern .

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

FIG. 6 is a characteristic diagram showing a difference between a normal deceleration command signal and a preceding pattern .

Claims (2)

[Claims] 1. A pulse generating means for generating a pulse according to the traveling of an elevator car, a pulse counting means for counting the generated pulses to obtain a car position, and a residue from the car position to a floor position of a target floor. Residual distance calculating means for obtaining the distance, based on the remaining distance and the predetermined reference table data for speed command calculation, while extracting a deceleration command signal for smoothly stopping the elevator car landing on the target floor, acceleration And a normal deceleration command signal generating means for correcting the acceleration of the deceleration command signal by the acceleration correction value and outputting a normal deceleration command signal, and an elevator according to the normal deceleration command signal. A speed control device for an elevator, comprising: speed control means for speed-controlling a driving electric motor. 2. A pulse generating means for generating a pulse according to the traveling of an elevator car, a pulse counting means for counting the generated pulses to obtain a car position, and a residue from the car position to a floor position of a target floor. Residual distance calculating means for obtaining the distance, based on the remaining distance and the predetermined reference table data for speed command calculation, while extracting a deceleration command signal for smoothly stopping the elevator car landing on the target floor, acceleration Select a predetermined acceleration correction value according to the above, correct the acceleration of the deceleration command signal by this acceleration correction value, and output the normal deceleration command signal from the normal deceleration command signal generating means, and from the preceding pattern generation table data. The preceding pattern generation data is extracted, the acceleration of the preceding pattern generation data is corrected by a predetermined acceleration correction value, and the normal deceleration command signal is received. The speed of the elevator comprising: a preceding pattern generating means for generating a preceding pattern that precedes the delay time of the control system, and a speed control means for controlling the speed of the electric motor for driving the elevator according to the preceding pattern. Control device.