Adaptive Fuzzy Sliding-Mode Control for Variable Displacement Hydraulic Servo System

M. Chiang, Lian-Wang Lee, Hsien-Hsush Liu
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引用次数: 7

Abstract

The variable displacement hydraulic servo system performs specific characteristics on non-linearity and time-varying. An exact model-based controller is difficult to be realized. In this study, the design method and experimental implementation of an adaptive fuzzy sliding-mode controller (AFSMC) are presented, which has on-line learning ability for dealing with the system time-varying and non-linear uncertainty behaviors for adjusting the control rule parameters. The tuning algorithms are derived in the sense of the Lyapunov stability theorem; thus, the stability of the system can be guaranteed. The experimental results show that the AFSMC can perform excellent position control and path control for the variable displacement hydraulic servo system.
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变排量液压伺服系统的自适应模糊滑模控制
变量液压伺服系统具有特殊的非线性和时变特性。一个精确的基于模型的控制器是很难实现的。提出了一种自适应模糊滑模控制器(AFSMC)的设计方法和实验实现,该控制器具有在线学习能力,可以处理系统的时变和非线性不确定性行为,可以调整控制规则参数。在李雅普诺夫稳定性定理的意义上推导了调谐算法;从而保证了系统的稳定性。实验结果表明,该方法对变位移液压伺服系统具有良好的位置控制和路径控制效果。
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