JPH0372102U - - Google Patents

Description

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

第１図はこの考案の一実施例によるアクチユエ
ータ装置の構成図、第２図は第１図に示すアクチ
ユエータ装置の動作説明図である。第３図は従来
のサーボ弁の断面図、第４図は従来のアクチユエ
ータ装置の構成図である。 図において、２……弁デイスク、５……ばね、
７……シリンダ、８……ピストン、９……変位計
、７１……供給大口径電磁式２位置ポペツト弁、
７２……排出大口径電磁式２位置ポペツト弁、７
３……供給小口径電磁式２位置ポペツト弁、７４
……排出小口径電磁式２位置ポペツト弁、３１…
…油圧装置である。 FIG. 1 is a block diagram of an actuator device according to an embodiment of this invention, and FIG. 2 is an explanatory diagram of the operation of the actuator device shown in FIG. 1. FIG. 3 is a sectional view of a conventional servo valve, and FIG. 4 is a configuration diagram of a conventional actuator device. In the figure, 2...valve disk, 5...spring,
7... Cylinder, 8... Piston, 9... Displacement meter, 71... Supply large-diameter electromagnetic 2-position poppet valve,
72...Discharge large-diameter electromagnetic 2-position poppet valve, 7
3...Supply small-diameter electromagnetic 2-position poppet valve, 74
...Discharge small diameter electromagnetic 2-position poppet valve, 31...
...It is a hydraulic device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 実開度検出装置からの検出信号によつてフイー
ドバツク制御され、閉止方向へ加力されている制
御弁を駆動するアクチユエータ装置であつて、ア
クチユエータシリンダの前記制御弁を開ける側の
室に連通する供給大口径、排出大口径、供給小口
径及び排出小口径の４個の電磁式２位置ポペツト
弁を設け、前記制御弁に対する指令開度と検出さ
れた実開度との偏差量が、正で所定値より大きい
ときは前記供給大口径ポペツト弁を開き、正で所
定値より小さいときは前記供給小口径ポペツト弁
のみを開き、負で絶対値が所定値より大きいとき
は前記排出大口径ポペツト弁を開き、負で絶対値
が所定値より小さいときは前記排出小口径ポペツ
ト弁のみを開いて駆動するようにしたことを特徴
とするアクチユエータ装置。 An actuator device that is feedback-controlled by a detection signal from an actual opening degree detection device and drives a control valve that is applied in a closing direction, the actuator device communicating with a chamber on the side of the actuator cylinder that opens the control valve. Four electromagnetic two-position poppet valves are provided, each having a large supply diameter, a large discharge diameter, a small supply diameter, and a small discharge diameter, to ensure that the deviation between the commanded opening for the control valve and the detected actual opening is correct. When the absolute value is greater than a predetermined value, the supply large diameter poppet valve is opened; when the positive value is smaller than the predetermined value, only the supply small diameter poppet valve is opened; when the absolute value is negative and the absolute value is greater than the predetermined value, the discharge large diameter poppet valve is opened. An actuator device characterized in that when a valve is opened and the absolute value is negative and smaller than a predetermined value, only the small discharge poppet valve is opened and driven.