Pressure control of hydraulic servo system using proportional control valve

비례전자밸브를 사용한 유압서보계의 압력제어

  • Yang, Kyong-Uk (Graduate School of Pukyong National University) ;
  • Oh, In-Ho (Dept. of Shipping Service System Engineering, Korea Maritime University) ;
  • Lee, Ill-Yeong (Pukyong National University)
  • 양경욱 (부경대학교 대학원) ;
  • 오인호 (한국해양대학교 운항시스템공학부) ;
  • 이일영 (부경대학교 자동차공학과)
  • Published : 1997.08.01


The purpose of this study is to build up control scheme that promptly control pressure in a hydraulic cylinder having comparatively small control volume, using a PCV (proportional control valve) and a digital computer. Object pressure control system has the character to be unstable easily, because the displacement-flow gain of the PCV is too large considering the small volume of the hydraulic cylinder and the time delay of response of the PCV is comparatively long. Considering the above-mentioned characteristics of the object pressure control system, in this study, control system is designed with two degree of freedom control scheme that is composed by adding a feed-forward control path to I-PDD$^{2}$ control system, and a reference model is used on the decision of control parameters. And through some experiments on the control system with FF-I-PDD$^{2}$ controller, the validity of this control method has been confirmed.


Pressure Control;Two-degree of Freedom Control;Proportional Pressure Contrl Valve


  1. 計測自動制御學會論文集 v.28 no.2 ガヌタ-ビンの低感度ロバヌト制御 田中黍太郞;足利貢
  2. 計測自動制御學會論文集 v.28 no.12 ロバヌト制御系設計のためのαバテメ一夕 田中黍太郞
  3. 선형제어 시스템 공학 김종식
  4. Automatic Control System(Sixth Edition) Benjamin, C. Kuo
  5. Proceedings of The 2nd International Symposium on Fluid Power Transmission and Control Dynamic Characteristics Improvement of Semi-Automatic Transmission Driven by Hydraulic Power for Construction Vehicles Yang, K. U.;Yun, S. N.;Lee, I. Y.(et al.)
  6. メカトロニヌと制御工學 日本機械學會
  7. Entwicklung Vorgesteuerter Proportionalventil mit 2-Wege-Einbauventil als Stellglied und mit Gerateinterne Ruckfuhrung Lu, Y.;T. H. Aachen
  8. 計測自動制御學會論文集 v.19 no.7 制御系設計のための實用的な汎用參照モデル 中政 隆;高木康夫;市川義則;北森候行
  9. 計測自動制御學會論文集 v.15 no.3 制御對象の部分的知識に基づく制御系の設計法 北森候行
  10. 綜合 카탈로그 內田油壓機器工業(珠)
  11. 대한기계학회논문집 v.17 no.8 유압구동식 선박용 축발전장치의 정속제어 정용길;이일영;양주호