JPS6288887A - Control device for electrical proportional control valve - Google Patents

Control device for electrical proportional control valve

Info

Publication number
JPS6288887A
JPS6288887A JP22753685A JP22753685A JPS6288887A JP S6288887 A JPS6288887 A JP S6288887A JP 22753685 A JP22753685 A JP 22753685A JP 22753685 A JP22753685 A JP 22753685A JP S6288887 A JPS6288887 A JP S6288887A
Authority
JP
Japan
Prior art keywords
control valve
signal
manual switch
control unit
electric proportional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP22753685A
Other languages
Japanese (ja)
Other versions
JPH0583792B2 (en
Inventor
Masatoshi Shinohara
篠原 真逸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tadano Ltd
Original Assignee
Tadano Iron Works Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tadano Iron Works Co Ltd filed Critical Tadano Iron Works Co Ltd
Priority to JP22753685A priority Critical patent/JPS6288887A/en
Publication of JPS6288887A publication Critical patent/JPS6288887A/en
Publication of JPH0583792B2 publication Critical patent/JPH0583792B2/ja
Granted legal-status Critical Current

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Landscapes

  • Magnetically Actuated Valves (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To prevent shocks of a hydraulic actuator from occurring by making a second control unit which outputs sequentially according a specified pattern to be actuated by a manual switch operation, with signals from a first control unit by manual operation used as initial signals. CONSTITUTION:When a manual switch 14 provided at the gripping part of a operation lever 3 is off, a command is issued to send signals from a 1st control unit A consisting of a variable resistor 4, from an analogue-digital converter 8 to digital-analogue converters 10 or 11. Also, a signal value from the 1st control unit A at the time immediately before the manual switch 14 is turned on is stored in a memory 7 as an initial value, and a command is issued to output signals gradually increasing or decreasing relative to the initial signal to the digital-analogue converters 10 or 11 according to a pattern stored in the memory 7. This makes it possible to change the opening of an electrical proportional control valve smoothly.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、電気式比例制御弁の開口度を制御する信号
を出力する電、気式比例制御弁のItil制御装置に関
する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an Itil control device for an electric/pneumatic proportional control valve that outputs a signal for controlling the opening degree of the electric proportional control valve.

(従来の技術) 前記制御装置としては、操作レバーの傾動悩に連動して
可変抵抗器の抵抗(114を変化させ、この変化にとも
なって電気式比例制御弁への出力が変化するようにした
ものが知られている。
(Prior Art) The control device changes the resistance (114) of a variable resistor in conjunction with the tilting movement of the operating lever, and the output to the electric proportional control valve changes in accordance with this change. something is known.

(発明が解決しようとする問題点) しかしながら、前記したIttl(財)装置にあっては
作業者が未熟であることに起因して油圧アクチュエータ
の始動時や停止時操作レバーの急操作がなされると電気
式比例制御弁の開口度が急変化し、当該電気式比例制御
弁を通過する油量の急変化が起きて油圧アクチュエータ
にショックが牛じることに対処できないという問題点が
あった。
(Problems to be Solved by the Invention) However, in the above-mentioned Ittl (Incorporated Foundation) device, due to the inexperience of the operator, the operating lever is suddenly operated when starting or stopping the hydraulic actuator. There is a problem in that it is not possible to deal with the sudden change in the opening degree of the electric proportional control valve and the sudden change in the amount of oil passing through the electric proportional control valve, which causes a shock to the hydraulic actuator.

この発明は5作業者が未熟であっても油圧アクチュエー
タにショックを生じさせることなく電気式比例制御弁を
制御することが出来るようにすることを目的とする。
An object of the present invention is to enable even unskilled workers to control an electric proportional control valve without causing a shock to the hydraulic actuator.

(問題点を解決するための手段) 前記問題点を解決するために本発明は。(Means for solving problems) The present invention aims to solve the above problems.

電気式比例制御弁の開口度を制御する信号を出力する電
気式比例制御弁の制御装置において。
In a control device for an electric proportional control valve that outputs a signal to control the opening degree of the electric proportional control valve.

当該制御装置は、作業者の手動操作量に連動して変化す
る信号を出力する第1制御部と、当該第11ti制御部
からの信号を初期信号とし当該初期信号より漸減あるい
は漸増する信号をあらかじめ定められたパターンに従っ
て順次出力する第2制御部を備えると共に、当該第2 
ff1l制御部を作動させる手動スイッチを備え、当該
手動スイッチが入ったときには第2制御部からの信号に
よって前記電気式比例制御弁の制御がなされるようにし
た構成としたものである。
The control device includes a first control section that outputs a signal that changes in conjunction with the amount of manual operation by the worker, and a signal from the 11th control section that is used as an initial signal, and a signal that gradually decreases or gradually increases from the initial signal. The second control unit sequentially outputs the output according to a predetermined pattern.
A manual switch is provided for operating the ff1l control section, and when the manual switch is turned on, the electric proportional control valve is controlled by a signal from the second control section.

(作用) 本発明では、上記のように構成したので、手動スイッチ
を作業者が入れれば、電気式比例制御弁の制御ヲ、第2
制御部がおこなうようになり、この第2制御部からはあ
らかじめ定められたパターンに従って漸減あるいは漸増
する信号が順次出力されて電気式比例制御弁の開口度を
円滑に変化させる。
(Function) Since the present invention is configured as described above, when the operator turns on the manual switch, the control of the electric proportional control valve is controlled by the second control valve.
The second control section sequentially outputs signals that gradually decrease or increase according to a predetermined pattern to smoothly change the opening degree of the electric proportional control valve.

また、任意の開口度の保持は、第1制御部によりなされ
る。
Moreover, the maintenance of an arbitrary opening degree is performed by the first control section.

(実施例) 次に本発明を第1図に示す1実施例に基ついて説明する
(Example) Next, the present invention will be described based on an example shown in FIG.

1は、油圧アクチュエータであり、2はこの油圧アクチ
ュエータ1を制御する電気式比例1!I制御弁である。
1 is a hydraulic actuator, and 2 is an electric proportional 1! that controls this hydraulic actuator 1! It is an I control valve.

この油圧アクチェエータ1は、その伸縮動によって例え
ば高所作業車のブーム(図示せず)を起伏動する。3は
1作業者が手動操作する操作レバーであり、この操作レ
バー3の傾動歓に応じて可変抵抗器4の抵抗値が変化し
、この可変抵抗器4の出力信号が変化する。この可変抵
抗器4は特許請求の範囲に記載された第1制御部Aを形
成している。5は、中央制御装置であり、CPU6、メ
モリー7、A/D変換器8、入力ゲート9、D/A変換
器10.11.電気式比例1til制御弁2駆動用のア
ンプ12.13よりなっている。このうち、特に前記し
た0PT16%メモリー7、入力ゲート9で特許請求の
範囲に記載された第2制御部Bを形成している。14は
、操作レバー3の把持部に設けられた手動スイッチであ
る。前記中央制御装置5のCPU6は、メモリー7に書
き込まれているプログラムに従って情報処理機能を果た
すものであり、手動スイッチ14がOFFであるときに
は第1制御部Aからの信号をA/D変換器8からD/A
変換器10或いは11へ送る指令を出している。また、
手動スイッチ14がONであるときには、手動スイッチ
14がONになる直前の第1制御部Aからの信号値をメ
モリー7に初期信号として記憶させ、当該初期信号より
漸減あるいは漸増する信号を、メモリー7に記憶された
パターンに従ってD/A変換器の10或いは11へ出力
する指令を出すものである。
The hydraulic actuator 1 raises and lowers, for example, a boom (not shown) of an aerial work vehicle by its telescoping motion. Reference numeral 3 denotes an operating lever that is manually operated by one worker, and the resistance value of a variable resistor 4 changes in accordance with the tilting movement of this operating lever 3, and the output signal of this variable resistor 4 changes. This variable resistor 4 forms a first control section A described in the claims. 5 is a central control unit, which includes a CPU 6, a memory 7, an A/D converter 8, an input gate 9, and D/A converters 10, 11, . It consists of amplifiers 12 and 13 for driving the electric proportional 1til control valve 2. Among these, the above-described 0PT16% memory 7 and input gate 9 form the second control section B described in the claims. 14 is a manual switch provided on the grip portion of the operating lever 3. The CPU 6 of the central control unit 5 performs an information processing function according to a program written in the memory 7, and when the manual switch 14 is OFF, the CPU 6 transmits the signal from the first control unit A to the A/D converter 8. From D/A
It issues a command to be sent to converter 10 or 11. Also,
When the manual switch 14 is ON, the signal value from the first control unit A immediately before the manual switch 14 is turned ON is stored in the memory 7 as an initial signal, and a signal that gradually decreases or increases from the initial signal is stored in the memory 7. This command issues an output command to the D/A converter 10 or 11 according to the pattern stored in the D/A converter 10 or 11.

次にメモリー7に書き込まれているプログラムを第2図
に示すフローチャートに従って説明する。まずステップ
8Iでは手動スイッチ14がONであるか否かを判断す
る。手動スイッチ14がONであるときには、ステップ
Fhでは、第1制御部Aからの信1、 1−の信号値を
電気式比例制御弁2へ出力するものである。言い換えれ
ばステップS$では電気式比例制御弁2への出力を現出
力の1/2にすること全5回繰シ返えす。なお、以上は
電気式比例制御弁2への出力が等比級数に従って漸減す
るパターンであるがこの例に限るものでないこと勿論で
ある。次にステップS、では5回繰り返したか否かを判
断する。5回縁シ返えされたときにはステップS4で電
気式比例制御弁2への出力を当該電気式比例制御弁2の
中立位置相尚出力とする。又前記ステップ81で手動ス
イッチ14が入っていないときには、ステップ8≦で第
1制御部Aからの出力を電気式比例制御弁2への出力と
するものであり、操作レバー3の傾vI髪に見合った開
口度開山1を電気式比例制御弁2へ施すものである。
Next, the program written in the memory 7 will be explained according to the flowchart shown in FIG. First, in step 8I, it is determined whether the manual switch 14 is ON. When the manual switch 14 is ON, the signal values of signals 1 and 1- from the first control section A are output to the electric proportional control valve 2 in step Fh. In other words, in step S$, the output to the electric proportional control valve 2 is reduced to 1/2 of the current output, which is repeated five times in total. Note that although the above is a pattern in which the output to the electric proportional control valve 2 gradually decreases according to a geometric series, it is needless to say that the pattern is not limited to this example. Next, in step S, it is determined whether or not the process has been repeated five times. When the edge has been turned over five times, the output to the electric proportional control valve 2 is set to the neutral position phase output of the electric proportional control valve 2 in step S4. Further, when the manual switch 14 is not turned on in step 81, the output from the first control section A is output to the electric proportional control valve 2 in step 8≦, and the inclination vI of the operating lever 3 is An appropriate opening degree 1 is applied to the electric proportional control valve 2.

以上に述べた実施例においては、第2制御部Bが第1制
御部Aに優先して電、気式比例制御弁2への制御信号を
出力する優先回路をメモリー7のプログラムに記憶させ
たものを示したが、手動スイッチ14と入力ゲート9間
にリレーコイルを配設すると共に、可変抵抗器4とA/
D変換器8間に前記リレーコイルによって制御されるb
接点を設け、手動スイッチ14がONになったときにリ
レーコイルが励磁されてb接点をOFFにする優先回路
にしてもよい。
In the embodiment described above, a priority circuit in which the second control section B outputs a control signal to the electric/pneumatic proportional control valve 2 in priority over the first control section A is stored in the program of the memory 7. As shown, a relay coil is arranged between the manual switch 14 and the input gate 9, and the variable resistor 4 and the A/
b controlled by the relay coil between the D converter 8
A contact may be provided to provide a priority circuit in which when the manual switch 14 is turned on, a relay coil is excited and the b contact is turned off.

以上の実施例では、メモリー7に書き込まれたプログラ
ムが、電気式比例制御弁2の開度を漸減させて油圧アク
チュエータを円滑に停止させるようにしたものであった
が、′@、気式比例制御弁2の開度ヲ廟増させて油圧ア
クチュエータを円滑に起動させることのみを目的とする
ものにあっては、前記プログラムを変更すれば良いこと
勿論である。また1円滑な停止と、円滑な起動の両方を
望むときには、入力スイッチを、2ヶ設け、夫々のスイ
ッチの作動によって、夫々別々のプログラムに従って電
気式比例l1lIII御弁2を制御するようにすれは良
い。
In the above embodiment, the program written in the memory 7 was to gradually reduce the opening degree of the electric proportional control valve 2 to smoothly stop the hydraulic actuator. Of course, if the purpose is to increase the opening degree of the control valve 2 to smoothly start up the hydraulic actuator, the above program may of course be changed. In addition, when both smooth stopping and smooth starting are desired, two input switches are provided, and the operation of each switch controls the electric proportional l1lIII control valve 2 according to a separate program. good.

(効果) この発明では、油圧アクチュエータの加速成いは減速を
円滑におこなえるので、油圧アクチェエータにショック
を生じさせることがないという効果を奏する。
(Effects) In the present invention, since the hydraulic actuator can be smoothly accelerated or decelerated, there is an effect that no shock is caused to the hydraulic actuator.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明の1実施例を示すブロック図で1凱第
2図は本発明の1実施例を示すフローチャート図である
。 1:油圧アクチュエータ、  2:を気式比例制御弁、
 A:第1制御部、 B:第2制御部、14:手動スイ
ッチ 第20
FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a flowchart showing one embodiment of the present invention. 1: Hydraulic actuator, 2: Pneumatic proportional control valve,
A: 1st control section, B: 2nd control section, 14: Manual switch 20th

Claims (1)

【特許請求の範囲】[Claims] 電気式比例制御弁の開口度を制御する信号を出力する電
気式比例制御弁の制御装置において、当該制御装置は、
作業者の手動操作量に連動して変化する信号を出力する
第1制御部と、当該第1制御部からの信号を初期信号と
し当該初期信号より漸減あるいは漸増する信号をあらか
じめ定められたパターンに従って順次出力する第2制御
部を備えると共に、当該第2制御部を作動させる手動ス
イッチを備え、当該手動スイッチが入つたときには第2
制御部からの信号によつて前記電気式比例制御弁の制御
がなされるようにした電気式比例制御弁の制御装置。
In a control device for an electric proportional control valve that outputs a signal for controlling the opening degree of the electric proportional control valve, the control device includes:
A first control section that outputs a signal that changes in conjunction with the amount of manual operation by the worker, and a signal from the first control section that is used as an initial signal and a signal that gradually decreases or increases from the initial signal according to a predetermined pattern. It is equipped with a second control section that sequentially outputs the output, and a manual switch that operates the second control section, and when the manual switch is turned on, the second control section
A control device for an electric proportional control valve, wherein the electric proportional control valve is controlled by a signal from a control section.
JP22753685A 1985-10-12 1985-10-12 Control device for electrical proportional control valve Granted JPS6288887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22753685A JPS6288887A (en) 1985-10-12 1985-10-12 Control device for electrical proportional control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22753685A JPS6288887A (en) 1985-10-12 1985-10-12 Control device for electrical proportional control valve

Publications (2)

Publication Number Publication Date
JPS6288887A true JPS6288887A (en) 1987-04-23
JPH0583792B2 JPH0583792B2 (en) 1993-11-29

Family

ID=16862439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22753685A Granted JPS6288887A (en) 1985-10-12 1985-10-12 Control device for electrical proportional control valve

Country Status (1)

Country Link
JP (1) JPS6288887A (en)

Also Published As

Publication number Publication date
JPH0583792B2 (en) 1993-11-29

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