摘要：Nonlinear systems are modeled as piecewise linear systems at multiple operating points, where the operating points are modeled as switches between constituent linearized systems. In this paper, adaptive piecewise linear switch controller is proposed for improving the response time and tracking performance of the hydraulic actuator control system, which is essentially piecewise linear. The controller composed of PID and Model Reference Adaptive Control (MRAC) adaptively chooses the proportion of these two components and makes the designed system have faster response time at the transient phase and better tracking performance, simultaneously. Then, their stability and tracking performance are analyzed and evaluated by the hydraulic actuator control system, the hydraulic actuator is controlled by the electrohydraulic system, and its model is built, which has piecewise linear characteristic. Then the controller results are compared between PID and MRAC and the switch controller designed in this paper is applied to the hydraulic actuator; it is obvious that adaptive switch controller has better effects both on response time and on tracking performance.

关键字：PIECEWISE-LINEAR SYSTEMS ELECTROHYDRAULIC SYSTEM STABILITY ANALYSIS DESIGN

ISSN号：1024-123X

发表日期：2017-01-01

期刊分区（SCI为中科院分区）：四区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：MATHEMATICAL PROBLEMS IN ENGINEERING

通讯作者：王鑫

第一作者：左信,刘建伟,梁华庆

论文类型：期刊论文

论文概要：左信,刘建伟,王鑫,梁华庆，Adaptive PID and Model Reference Adaptive Control Switch Controller for Nonlinear Hydraulic Actuator，MATHEMATICAL PROBLEMS IN ENGINEERING，2017，

论文题目：Adaptive PID and Model Reference Adaptive Control Switch Controller for Nonlinear Hydraulic Actuator