Pressure control of hydraulic servo system using proportional control valve

Title & Authors
Pressure control of hydraulic servo system using proportional control valve
Yang, Kyong-Uk; Oh, In-Ho; Lee, Ill-Yeong;

Abstract
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$\small{^{2}}$ 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$\small{^{2}}$ controller, the validity of this control method has been confirmed.
Keywords
Pressure Control;Two-degree of Freedom Control;Proportional Pressure Contrl Valve;
Language
Korean
Cited by
1.
DDV를 이용한 압력 제어시스템의 강인제어,이창돈;박성환;이진걸;

제어로봇시스템학회논문지, 2005. vol.11. 12, pp.1077-1082
References
1.

2.
Proceedings of The 2nd International Symposium on Fluid Power Transmission and Control, 1995. pp.155-160

3.

4.

5.

6.
Entwicklung Vorgesteuerter Proportionalventil mit 2-Wege-Einbauventil als Stellglied und mit Gerateinterne Ruckfuhrung, 1981.

7.
Automatic Control System(Sixth Edition), 1991. pp.325-425

8.
선형제어 시스템 공학, 1991. pp.119-122

9.
대한기계학회논문집, 1993. vol.17. 8, pp.1999-2010

10.

11.
メカトロニヌと制御工學, 0000. pp.142-147