PI Control of Proportional Valve-Cylinder Water Hydraulic System

Abstract:

Water hydraulic components have been developed rapidly in recent years. However many problems such as low lubricity and leakage limited the performance of them, especially water proportional valves. A proportional valve- hydraulic cylinder system with tap water as working medium is chosen as object to investigate the performance of water hydraulic system. With regarding to the weaknesses of the selected 4/3 proportional valve including lag, dead zone and nonlinearity, an integral separation PI arithmetic based close-loop controller is developed. Experiments results verified the electro-hydraulic proportional system of fast response speed and high accuracy.

• Periodical: Applied Mechanics and Materials (Volumes 548-549)
• Pages: 977-984
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.548-549.977
• Online since: April 2014
• Authors: Xin Ba, Xiao Hui Luo*, Xu Feng Zhao, Yu Quan Zhu
• Keywords: Closed Loop Systems, Integral Separation PI, Proportional Control, Water Hydraulic

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