A NEW TIME-DELAY COMPENSATING SCHEME FOR ELECTRO-HYDRAULIC SYSTEMS

Authors

  • Chun-Liang Lin Department of Electrical Engineering, National Chung Hsing University, Taichung, Taiwan 402, R.O.C.
  • Chun-Hsiung Chen Institute of Electrical and Information Engineering, Feng Chia University, Taichung, Taiwan 40724, R.O.C.
  • Van-Tsai Liu Department of Electrical Engineering, National Huwei Institute of Technology, Yunlin, Taiwan 63208, R.O.C.

Keywords:

hydraulic system, position control, time-delay, fuzzy control, wavelet neural network

Abstract

Operating time delay in the solenoid valves is very common for practical electro-hydraulic servo systems. It may sometimes cause performance degradation or even instability if it isn’t treated carefully during control system designs. We propose in this paper a non-model-based design approach for hydraulic actuating systems based on a new time-delay compensation scheme. In the proposed system, two types of controllers are combined: a fuzzy-PID controller used to ensure primary tracking performance and an adaptable wavelet compensator used to compensate for the time delay resulting from the control valve. Performance of the proposed design is widely verified on a newly developed simulation platform to show its effectiveness.

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Author Biographies

Chun-Liang Lin, Department of Electrical Engineering, National Chung Hsing University, Taichung, Taiwan 402, R.O.C.

Chun-Liang Lin was born in Tainan, Taiwan, Republic of China in 1958. He received his Ph.D. in aeronautical and astronautical engineering from the National Cheng Kung University, Taiwan, R.O.C. in 1991. He was a professor in the Department of Automatic Control Engineering at Feng Chia University, Taiwan, R.O.C. from 1995 to 2002. He is currently a professor in the Department of Electrical Engineering at National Chung Hsing University, Taichung, Taiwan, R.O.C. His current research interests include guidance and control, intelligent control and robust control.

Chun-Hsiung Chen, Institute of Electrical and Information Engineering, Feng Chia University, Taichung, Taiwan 40724, R.O.C.

Chun-Hsiung Chen was born in Tainan, Taiwan, Republic of China, in 1979. He received his B.S. degree in automatic control engineering from the Feng Chia University, Taiwan, R.O.C. in 2001. He is currently working toward the Ph.D. degree in intelligent hydraulic and pneumatic control systems at the Feng Chia University, Taiwan, R.O.C. His research interests are in the field of fuzzy control, hydraulic and pneumatic control, and linear control theory.

Van-Tsai Liu, Department of Electrical Engineering, National Huwei Institute of Technology, Yunlin, Taiwan 63208, R.O.C.

Van-Tsai Liu received his M.S. degree from the National Central University, Taiwan in 1987. He is currently an associate professor in the Department of Electrical Engineering, National Formosa University, Yunlin, Taiwan. His research interests include piezoelectric systems, hydraulic and pneumatic control, and process control.

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Published

2005-03-01

How to Cite

Lin, C.-L., Chen, C.-H., & Liu, V.-T. (2005). A NEW TIME-DELAY COMPENSATING SCHEME FOR ELECTRO-HYDRAULIC SYSTEMS. International Journal of Fluid Power, 6(1), 19–27. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/574

Issue

2005: Vol 06 Iss 1

Section

Original Article