JPH1073102A - Drive control system for gas pressure actuator - Google Patents
Drive control system for gas pressure actuatorInfo
- Publication number
- JPH1073102A JPH1073102A JP24910096A JP24910096A JPH1073102A JP H1073102 A JPH1073102 A JP H1073102A JP 24910096 A JP24910096 A JP 24910096A JP 24910096 A JP24910096 A JP 24910096A JP H1073102 A JPH1073102 A JP H1073102A
- Authority
- JP
- Japan
- Prior art keywords
- gas pressure
- gas
- solenoid valve
- signals
- moving member
- 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.)
- Pending
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えばガス圧式シ
リンダのようなガス圧式アクチュエータの駆動制御シス
テムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive control system for a gas pressure type actuator such as a gas pressure type cylinder.
【０００２】[0002]
【従来の技術】例えば、シリンダチューブと、このシリ
ンダチューブ内で往復移動可能なピストンと、このピス
トンに弾力を作用させるバネとを備える単動型ガス圧式
シリンダは、そのシリンダチューブ内に供給されるガス
の圧力が作用することでピストンが一方向に変位され、
そのガスがシリンダチューブ内から排出されることでバ
ネの弾力によりピストンが他方向に変位される。2. Description of the Related Art For example, a single-acting gas-pressure cylinder having a cylinder tube, a piston that can reciprocate in the cylinder tube, and a spring that exerts elasticity on the piston is supplied into the cylinder tube. The piston is displaced in one direction by the gas pressure,
When the gas is exhausted from the cylinder tube, the piston is displaced in the other direction by the elastic force of the spring.
【０００３】従来、上記のようなガス圧式シリンダにお
いては、シリンダチューブへのガス供給用流路に設けら
れる電磁弁が開かれ、且つ、そのシリンダチューブから
のガス排出用流路に設けられる電磁弁が閉じられること
で、ピストンが一方向に駆動されて一方のストロークエ
ンドに位置され、また、そのガス供給用流路に設けられ
る電磁弁が閉じられ、且つ、そのガス排出用流路に設け
られる電磁弁が開かれることで、ピストンが他方向に駆
動されて他方のストロークエンドに位置されていた。Conventionally, in such a gas pressure type cylinder, an electromagnetic valve provided in a gas supply passage to a cylinder tube is opened, and an electromagnetic valve provided in a gas discharge passage from the cylinder tube is provided. Is closed, the piston is driven in one direction and positioned at one stroke end, and the electromagnetic valve provided in the gas supply flow path is closed and provided in the gas discharge flow path. When the solenoid valve was opened, the piston was driven in the other direction and positioned at the other stroke end.
【０００４】[0004]
【発明が解決しようとする課題】そのピストンに作用す
るガス圧力は、ガス供給用流路に設けられる電磁弁が開
かれ、且つ、ガス排出用流路に設けられる電磁弁が閉じ
られると急激に上昇し、また、ガス供給用流路に設けら
れる電磁弁が閉じられ、且つ、ガス排出用流路に設けら
れる電磁弁が開かれると急激に低下する。The gas pressure acting on the piston suddenly increases when the solenoid valve provided in the gas supply passage is opened and the solenoid valve provided in the gas discharge passage is closed. It rises and drops sharply when the solenoid valve provided in the gas supply passage is closed and the solenoid valve provided in the gas discharge passage is opened.
【０００５】すなわち、従来の構成ではピストンに作用
するガス圧力の変化が急激であるため、ピストンをスト
ロークエンド以外の位置に精密に位置決めするのが困難
で、用途が限定されていた。That is, in the conventional configuration, since the gas pressure acting on the piston changes abruptly, it is difficult to precisely position the piston at a position other than the stroke end, and its use has been limited.
【０００６】本発明は、上記問題を解決することのでき
るガス圧式アクチュエータの駆動制御システムを提供す
ることを目的とする。An object of the present invention is to provide a drive control system for a gas pressure type actuator which can solve the above problems.
【０００７】[0007]
【課題を解決するための手段】本発明のガス圧式アクチ
ュエータの駆動制御システムは、作用するガス圧力に応
じた量だけ変位する移動部材を有するガス圧式アクチュ
エータと、そのアクチュエータへのガス供給用流路、及
び又は、そのアクチュエータからのガス排出用流路を開
閉する電磁弁と、各電磁弁に流路の開き信号と閉じ信号
とを送る制御装置とを備え、それら信号の中の少なくと
も一つの信号は継続時間が可変のパルス信号とされ、残
りの信号は継続時間が一定のパルス信号とされること
で、その移動部材に作用するガス圧力を制御可能なこと
を特徴とする。A drive control system for a gas pressure type actuator according to the present invention comprises a gas pressure type actuator having a moving member which is displaced by an amount corresponding to an acting gas pressure, and a gas supply passage to the actuator. And / or an electromagnetic valve that opens and closes a gas discharge flow path from the actuator, and a control device that sends a flow path open signal and a flow close signal to each electromagnetic valve, and at least one signal among the signals Is a pulse signal with a variable duration, and the remaining signals are pulse signals with a constant duration, whereby the gas pressure acting on the moving member can be controlled.
【０００８】本発明によれば、移動部材に作用するガス
圧力と、そのガス圧力の変化速度を、少なくとも一つの
パルス信号の継続時間の変化に応じて変化させることが
できる。よって、そのガス圧力に応じて移動部材の位置
を高精度に制御できる。According to the present invention, the gas pressure acting on the moving member and the rate of change of the gas pressure can be changed according to the change in the duration of at least one pulse signal. Therefore, the position of the moving member can be controlled with high accuracy according to the gas pressure.
【０００９】[0009]
【発明の実施の形態】以下、図面を参照して本発明の実
施形態を説明する。図１に示す単動型ガス圧式シリンダ
１は、シリンダチューブ２と、このシリンダチューブ２
内で往復移動可能なピストン（移動部材）３と、このピ
ストン３に弾力を作用させる圧縮バネ４とを備える。そ
のピストン３によりシリンダチューブ２はガス導入室２
ａとバネ室２ｂとに区画される。そのバネ室２ｂ内にお
いて、そのバネ４はピストン３に一体化されたピストン
ロッド５に嵌め合わされる。そのバネ４は、ピストン３
を図中右方へ変位させる弾力を作用させ、その弾力はピ
ストン３の図中左方への変位量が大きくなるに従い大き
くなる。Embodiments of the present invention will be described below with reference to the drawings. A single-acting gas pressure type cylinder 1 shown in FIG.
A piston (moving member) 3 that can reciprocate in the inside thereof, and a compression spring 4 that applies elastic force to the piston 3 are provided. The cylinder 3 is moved into the gas introduction chamber 2 by the piston 3.
a and a spring chamber 2b. The spring 4 is fitted into a piston rod 5 integrated with the piston 3 in the spring chamber 2b. The spring 4 is the piston 3
Is applied to the right side in the figure, and the elasticity increases as the amount of displacement of the piston 3 to the left side in the figure increases.
【００１０】そのガス導入室２ａに、ガス供給用配管７
とガス排出用配管８とが接続され、そのガス供給用配管
７にガス供給用流路を開閉する第１電磁弁９が設けら
れ、そのガス排出用配管８にガス排出用流路を開閉する
第２電磁弁１０が設けられ、そのバネ室２ｂは配管１３
を介して、その第２電磁弁１０の下流側においてガス排
出用配管８に接続される。A gas supply pipe 7 is provided in the gas introduction chamber 2a.
And a gas discharge pipe 8 are connected, and a first solenoid valve 9 for opening and closing a gas supply flow path is provided in the gas supply pipe 7, and the gas discharge flow path is opened and closed in the gas discharge pipe 8. A second solenoid valve 10 is provided, and its spring chamber 2b is connected to a pipe 13
Is connected to the gas discharge pipe 8 on the downstream side of the second solenoid valve 10.
【００１１】その第１電磁弁９が開かれることで、高圧
ガス供給源（図示省略）からガス導入室２ａに高圧ガス
が導入され、その第２電磁弁が開かれることで、そのガ
ス導入室２ａから高圧ガスが大気中に排気され、そのガ
ス導入室２ａにおいてピストン３に作用するガス圧力に
応じた量だけピストン３は変位する。When the first solenoid valve 9 is opened, a high-pressure gas is introduced from a high-pressure gas supply source (not shown) into the gas introduction chamber 2a, and when the second solenoid valve is opened, the gas introduction chamber is opened. The high-pressure gas is exhausted into the atmosphere from 2a, and the piston 3 is displaced by an amount corresponding to the gas pressure acting on the piston 3 in the gas introduction chamber 2a.
【００１２】その第１電磁弁９と第２電磁弁１０は制御
装置２０に接続される。その制御装置２０は、その第１
電磁弁９と第２電磁弁１０とに流路の開き信号と閉じ信
号とを送る。それら信号の中の少なくとも一つの信号は
継続時間が可変のパルス信号とされ、残りの信号は継続
時間が一定のパルス信号とされることで、そのピストン
３に作用するガス圧力が制御される。例えば、図２の
（１）は第１電磁弁９に送られるパルス信号を示し、そ
の流路の開き信号の継続時間Ｔａは一定とされ、流路の
閉じ信号の継続時間Ｔｂは可変とされ、図２の（２）は
第２電磁弁１０に送られるパルス信号を示し、その流路
の開き信号の継続時間Ｔｃと閉じ信号の継続時間Ｔｄは
一定とされる。例えば、そのガス圧式シリンダ１のピス
トン３を、空調空気の吹き出し口の開閉用フラップに連
結し、その吹き出し口の開度を温度に応じて調節するの
に利用する場合、その制御装置２０は、温度センサに接
続され、検知温度に応じて予め定められた位置にピスト
ン３が位置するように、予め定められたプログラムに従
い、その第１電磁弁９に送られる流路の閉じ信号の継続
時間Ｔｂを変化させる。The first solenoid valve 9 and the second solenoid valve 10 are connected to a control device 20. The control device 20 controls the first
An opening signal and a closing signal of the flow path are sent to the solenoid valve 9 and the second solenoid valve 10. At least one of the signals is a pulse signal having a variable duration, and the remaining signals are pulse signals having a constant duration, whereby the gas pressure acting on the piston 3 is controlled. For example, (1) of FIG. 2 shows a pulse signal sent to the first solenoid valve 9, the duration Ta of the flow path opening signal is made constant, and the duration Tb of the flow path closing signal is made variable. 2 (2) shows a pulse signal sent to the second solenoid valve 10, and the duration Tc of the opening signal of the flow path and the duration Td of the closing signal are constant. For example, when the piston 3 of the gas pressure type cylinder 1 is connected to the opening / closing flap of the outlet of the conditioned air and used to adjust the opening of the outlet according to the temperature, the control device 20 includes: In accordance with a predetermined program, the duration Tb of the flow path closing signal sent to the first solenoid valve 9 is connected to a temperature sensor according to a predetermined program so that the piston 3 is located at a predetermined position according to the detected temperature. To change.
【００１３】上記構成によれば、第２電磁弁１０により
開閉されるガス排出用流路は、等価的にオリフィスの働
きをすることになり、上記各パルス信号の継続時間の設
定値は、その等価オリフィスの口径に相当し、その各パ
ルス信号の少なくとも一つの継続時間が可変とされるこ
とで、その等価オリフィスの口径を任意に調節すること
ができる。これにより、ピストン３に作用するガス圧力
と、そのガス圧力の変化速度を、少なくとも一つのパル
ス信号の継続時間の変化に応じて変化させることで、そ
の等価オリフィス口径を容易に最適化し、そのガス圧力
に応じてピストン３の位置を高精度に制御できる。According to the above configuration, the gas discharge passage opened and closed by the second solenoid valve 10 equivalently functions as an orifice, and the set value of the duration of each pulse signal is Since the duration of at least one pulse signal corresponding to the diameter of the equivalent orifice is variable, the diameter of the equivalent orifice can be arbitrarily adjusted. By changing the gas pressure acting on the piston 3 and the rate of change of the gas pressure in accordance with the change in the duration of at least one pulse signal, the equivalent orifice diameter can be easily optimized, and the gas The position of the piston 3 can be controlled with high accuracy according to the pressure.
【００１４】なお、本発明は上記実施形態に限定されな
い。例えば、上記実施形態では第１電磁弁９に送られる
閉じ信号の継続時間Ｔｂが可変とされ、他の信号の継続
時間Ｔａ、Ｔｃ、Ｔｄが一定とされたが、全ての信号の
継続時間が可変とされてもよく、少なくとも一つの信号
を継続時間が可変のパルス信号とし、残りの信号を継続
時間が一定のパルス信号とすればよい。また、ガス圧式
アクチュエータはガス圧式シリンダに限定されず、例え
ばガス圧式ロータリーアクチュエータであってもよい。
さらに、上記実施形態における第１電磁弁９と第２電磁
弁１０の何れか一方に代えて、固定オリフィスまたは可
変オリフィスを、ガス供給用流路またはガス排出用流路
に配置してもよい。Note that the present invention is not limited to the above embodiment. For example, in the above embodiment, the duration Tb of the closing signal sent to the first solenoid valve 9 is variable, and the durations Ta, Tc, and Td of the other signals are constant. The signal may be variable, and at least one signal may be a pulse signal having a variable duration, and the remaining signals may be pulse signals having a constant duration. Further, the gas pressure type actuator is not limited to the gas pressure type cylinder, and may be, for example, a gas pressure type rotary actuator.
Further, a fixed orifice or a variable orifice may be arranged in the gas supply passage or the gas discharge passage instead of one of the first solenoid valve 9 and the second solenoid valve 10 in the above embodiment.
【００１５】[0015]
【発明の効果】本発明によれば、移動部材の位置制御を
高精度に行うことのできるガス圧式アクチュエータを提
供できる。According to the present invention, it is possible to provide a gas pressure type actuator capable of controlling the position of a moving member with high accuracy.
【００１６】[0016]
【本発明の実施態様】本発明のガス圧式アクチュエータ
の駆動制御システムは、作用するガス圧力に応じた量だ
け変位する移動部材を有するガス圧式アクチュエータ
と、そのアクチュエータへのガス供給用流路を開閉する
第１電磁弁と、そのアクチュエータからのガス排出用流
路を開閉する第２電磁弁と、各電磁弁に流路の開き信号
と閉じ信号とを送る制御装置とを備え、それら信号の中
の少なくとも一つの信号は継続時間が可変のパルス信号
とされ、残りの信号は継続時間が一定のパルス信号とさ
れることで、その移動部材に作用するガス圧力を制御可
能であるのが好ましい。あるいは、本発明のガス圧式ア
クチュエータの駆動制御システムは、作用するガス圧力
に応じた量だけ変位する移動部材を有するガス圧式アク
チュエータと、そのアクチュエータへのガス供給用流路
と、そのアクチュエータからのガス排出用流路と、それ
ら流路の一方を開閉する電磁弁と、それら流路の何れか
一方に配置されるオリフィスと、その電磁弁に流路の開
き信号と閉じ信号とを送る制御装置とを備え、それら信
号の中の少なくとも一つの信号は継続時間が可変のパル
ス信号とされ、残りの信号は継続時間が一定のパルス信
号とされることで、その移動部材に作用するガス圧力を
制御可能であるのが好ましい。これにより、より高精度
に移動部材の位置制御を行うことができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drive control system for a gas pressure type actuator according to the present invention comprises a gas pressure type actuator having a moving member which is displaced by an amount corresponding to an acting gas pressure, and a gas supply passage to the actuator. A first solenoid valve that opens and closes a channel for discharging gas from the actuator, and a control device that sends a signal to open and close the channel to each solenoid valve. Preferably, at least one of the signals is a pulse signal having a variable duration, and the remaining signals are pulse signals having a constant duration, so that the gas pressure acting on the moving member can be controlled. Alternatively, the drive control system of the gas pressure type actuator according to the present invention includes a gas pressure type actuator having a moving member that is displaced by an amount corresponding to the acting gas pressure, a gas supply flow path to the actuator, and a gas from the actuator. A discharge channel, an electromagnetic valve that opens and closes one of the channels, an orifice disposed in one of the channels, and a control device that sends a signal to open and close the channel to the electromagnetic valve. At least one of the signals is a pulse signal having a variable duration, and the remaining signals are pulse signals having a constant duration, thereby controlling the gas pressure acting on the moving member. Preferably it is possible. Thereby, the position of the moving member can be controlled with higher accuracy.
【図１】本発明の実施形態のガス圧式アクチュエータの
駆動制御システムの構成説明図FIG. 1 is a configuration explanatory diagram of a drive control system of a gas pressure type actuator according to an embodiment of the present invention.
【図２】本発明の実施形態の（１）は第１電磁弁に送ら
れるパルス信号の一例を示す図、（２）は第２電磁弁に
送られるパルス信号の一例を示す図FIG. 2 is a diagram illustrating an example of a pulse signal sent to a first solenoid valve according to an embodiment of the present invention, and FIG. 2B is a diagram illustrating an example of a pulse signal sent to a second solenoid valve;
１ ガス圧式シリンダ ３ ピストン ９ 第１電磁弁 １０ 第２電磁弁 ２０ 制御装置 DESCRIPTION OF SYMBOLS 1 Gas pressure cylinder 3 Piston 9 1st solenoid valve 10 2nd solenoid valve 20 Control device
Claims (1)
る移動部材を有するガス圧式アクチュエータと、 そのアクチュエータへのガス供給用流路、及び又は、そ
のアクチュエータからのガス排出用流路を開閉する電磁
弁と、 各電磁弁に流路の開き信号と閉じ信号とを送る制御装置
とを備え、 それら信号の中の少なくとも一つの信号は継続時間が可
変のパルス信号とされ、残りの信号は継続時間が一定の
パルス信号とされることで、その移動部材に作用するガ
ス圧力を制御可能なガス圧式アクチュエータの駆動制御
システム。1. A gas pressure type actuator having a moving member displaced by an amount corresponding to an acting gas pressure, and a gas supply flow path to the actuator and / or a gas discharge flow path from the actuator is opened and closed. A solenoid valve, and a control device for sending a flow opening signal and a closing signal to each solenoid valve. At least one of the signals is a pulse signal having a variable duration, and the remaining signals are continuous pulses. A drive control system for a gas pressure type actuator capable of controlling a gas pressure acting on a moving member by using a pulse signal having a constant time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24910096A JPH1073102A (en) | 1996-08-29 | 1996-08-29 | Drive control system for gas pressure actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24910096A JPH1073102A (en) | 1996-08-29 | 1996-08-29 | Drive control system for gas pressure actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1073102A true JPH1073102A (en) | 1998-03-17 |
Family
ID=17187971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24910096A Pending JPH1073102A (en) | 1996-08-29 | 1996-08-29 | Drive control system for gas pressure actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1073102A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100962562B1 (en) | 2007-03-30 | 2010-06-11 | 에스엠시 가부시키가이샤 | Positioning control mechanism for single-acting air cylinder |
-
1996
- 1996-08-29 JP JP24910096A patent/JPH1073102A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100962562B1 (en) | 2007-03-30 | 2010-06-11 | 에스엠시 가부시키가이샤 | Positioning control mechanism for single-acting air cylinder |
| US7886652B2 (en) | 2007-03-30 | 2011-02-15 | Smc Corporation | Positioning control mechanism for single-acting air cylinder |
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