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Journal of Zhejiang University SCIENCE A 2001 Vol.2 No.4 P.421~425

http://doi.org/10.1631/jzus.2001.0421


RESEARCH ON STABILITY AND MINIMUM ORIFICE AREA OF HYDRAULIC SERVO POSITION CONTROL SYSTEM


Author(s):  WANG Xuan-yin, LIU Rong

Affiliation(s):  The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

Corresponding email(s): 

Key Words:  stability, orifice area, nonlinear, hydraulic servo position control system, GPCM


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WANG Xuan-yin, LIU Rong. RESEARCH ON STABILITY AND MINIMUM ORIFICE AREA OF HYDRAULIC SERVO POSITION CONTROL SYSTEM[J]. Journal of Zhejiang University Science A, 2001, 2(4): 421~425.

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Abstract: 
This paper reports results of research on the stability of a hydraulic servo position system using generalization pulse code modulation (GPCM) and common on/off valves for hydraulic servo control. The describing function was first used to analyze the system's stability, and based on the nonlinear theory, an equation calculating the minimum orifice area of GPCM valves was derived by applying results of analysis on the stability of the GPCM control system. In the end, aimed at developing a hydraulic servo position system to be used in a paint robot, simulation and experiment were carried out. The results show that the theoretical conclusions accorded with practical results.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[2] Feng Chunbo, Fei Shuming, 1998. Analysis and Design of Nonlinear Control system. Electronics Industry Press, Beijing, p.120-130.

[3] Liu Bong, Wang Xuanyin, Tao Guoliang, 2001. Theortical and experimental study on hydraulic servo position eontrol system with generalized pulse code modulation. Proeeeding of ICFP'2001, Hangzhou, p.176-179.

[4] Li Hongren, 1986. Hydraulic control system. National Defense Industry Press, Beijing, p.152-156.

[5] Lawrence Perko, 1998. Differential equations and dynamical system. Springer, U.S.A., New York, p.190-193.

[6] Wang Xuanyin, Tao Guoliang, 2000. Research on the servo control with Generalized Pulse Code Modulation. Chinese Journal of Mechanical Engineering, 36(12):14-17.

[7] Wang Xuanyin, 2000. The modeling and control of the hydraulic servo system by using on-off valve. Proceedings of the ASME, Dynamic system and control division.Orland, U.S.A., Vol. 1 p.641-647.

[8] Wu Qi, 1992. Automatic control theory. Tsinghua University Publish House, Beijing, p.270-297.

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