二自由度交流磁轴承参数自整定模糊PID+控制器的研究.pdfVIP

Proceedings of the 26th Chinese Control Conference July 26-31, 2007, Zhangji aj ie, Hunan, China 自由度交流磁轴承参数自整定模糊PID 控制器研究* 雷，朱 秋，陈 艳 江苏大学电气信息工程学院，镇江 2 12013 E-mail 1: wangl8291866@126.com 要：在介绍二自由度交流磁轴承工作原理基础上，阐述了悬浮力产生机理，建立了悬浮力数学模型。设计了交流 磁轴承参数自整定模糊PID 控制器，给出了模糊控制器的模糊控制规则表，并在MATLAB7.0/SIMULINK 环境下构建了 系统的仿真模型，进行了动态仿真。通过与常规PID 控制性能相比较，得出这种变参数模糊PID 控制器不仅能够提高 交流磁轴承的动态性能，而且具 很强的适用性和鲁棒性。 关键词：磁轴承，数学模型，模糊控制，控制器，仿真 On Fuzzy PID Controller with Parameters Self-tuning in 2 * Degrees of Freedom AC Magnetic Bearings Wang Lei，Zhu Huangqiu, Chen Yan School of Electrical and Information Engineering，Jiangsu University，Zhenj iang 212013，P. R. China E-mail 1: wangl8291866@126.com Abstract: Based on introducing working principle of 2 degrees of freedom AC-HMB, the principle of producing suspension force is expounded and the mathematics models of suspension forces are set up. The fuzzy PID controller with parameters self-tuning for 2 DOF AC-HMB system is designed, and the fuzzy control rule is present. Within MATLAB7.0/SIMULINK environment, the system simulation model is constructed and dynamic simulation had been completed. Comparing with nor- mal PID controller performance, the results have shown that this parameters self-tuning PID controller not only can improve the system dynamic performances, but also has good self-adj ustability and robustness. Key Words: Magnetic Bearing, mathematics model, fuzzy Control, Controller, Simulation 1 引言(Introduction) 2 二自由度交流磁轴承工作原理及数学模型 磁轴承是一个非线性的控制对象，动态性能较为 (2-DOF AC-HMB Working Principle and 复杂，悬浮力数学模型一般在平衡点附近进行线性化