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Research on stability and minimum orifice area of hydraulic servo position control system

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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.

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Authors and Affiliations

  1. The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, 310027, Hangzhou, China

    Wang Xuan-yin & Liu Rong

Authors
  1. Wang Xuan-yin
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  2. Liu Rong
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Project (59805016) supported by NSFC.

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Xuan-yin, W., Rong, L. Research on stability and minimum orifice area of hydraulic servo position control system. J. Zheijang Univ.-Sci. 2, 421–425 (2001). https://doi.org/10.1631/BF02840559

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  • DOI: https://doi.org/10.1631/BF02840559

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