一种基于H_∞优化的内模控制Anti-windup设计方法  

Anti-windup Design Method for Internal Model Control Based on H_∞ Optimization

作　　者：侯岩松[1] 李华[1] 

机构地区：[1]兰州交通大学

出　　处：《电气传动》2006年第11期30-33,37,共5页Electric Drive

基　　金：甘肃省自然科学基金项目(3ZS042B25039);光电技术与智能控制教育部重点实验室开放基金项目(K04106)

摘　　要：针对被控对象控制输入发生饱和时对内模控制性能和稳定性的不利影响。分析了二自由度内模控制结构具有抗饱和特性的原因。提出了一种抗饱和,跟踪与干扰补偿解耦的三自由度内模控制结构。其中抗饱和控制器基于H∞优化理论综合,小增益定理保证全局稳定性。仿真表明了算法有较好的抗饱和及干扰补偿能力,鲁棒性较强。Performance and stability of internal model control can deeply deteriorate when plant control input is subject to saturation. Study is made on the reason why two-degree-of-freedom internal model control has anti-windup characteristics. From this consideration, a new modified three-degree-of-freedom internal model control scheme is proposed. This method can realize the decoupling of anti-windup, reference tracing and dis- turbance rejection. Anti-windup controller synthesis based on H∞ optimization theory. Small gain theorem guarantees the global stability. Simulation results show the method has better ability of anti-windup and disturbance rejection.

关 键 词：饱和 抗饱和 内模控制 自由度 H∞优化 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]