非脆弱鲁棒控制的μ综合权函数选择研究  

Design for non-fragile robust control and selections of weighting functions of μ-synthesis

作　　者：恒庆海[1] 

机构地区：[1]北京信息工程学院,北京100101

出　　处：《电工电能新技术》2004年第2期29-32,共4页Advanced Technology of Electrical Engineering and Energy

基　　金：北京市教育委员会科技发展计划资助项目 (KM2 0 0 31 0 772 1 2 5 ) ;北京信息工程学院博士科研基金资助项目

摘　　要：利用非脆弱鲁棒性能概念和 μ综合设计方法 ,解决了一类常规的鲁棒性能设计不能保证控制器摄动时系统具有较好性能的问题。给出了用 μ综合求解非脆弱鲁棒控制器的一种设计方法。并且指出 ,即使采用了 μ综合方法 ,但如果性能权函数选择不当 ,也不能得到较好的非脆弱鲁棒性能。给出了权函数的正确选择。求解了 μ综合非脆弱鲁棒PI控制器。对电厂锅炉过热汽温示例的不同设计结果进行了仿真对比 。It is suggested that a class of design problem of the control systems can be formulated as a μ synthesis by the concepts of the non fragile robust performance. It can be used to solve the robustness problems of the perturbations of the controllers, which can't be done by the conventional robust performance designs. It is pointed out that the system of μ synthesis design can't be of non fragile robust performance when performance weighting function is selected incorrectly. The correct selections of the weighting functions are discussed and the μ synthesis non fragile robust PI controller is solved. The simulation results of a boiler superheated steam temperature system show that the system has better performance when the controlled members and the controllers are simultaneously perturbed.

关 键 词：权函数选择 控制器摄动 非脆弱鲁棒控制 Μ综合 锅炉过热汽温 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置] TM621[自动化与计算机技术—控制科学与工程]