基于结构化闭环响应和输出方差限制的控制器性能评价  

Controller Performance Assessment via Structured Closed-loop Response Subject to Output Variance Limit

作　　者：李大字[1] 张嫄[1] 高彦臣 靳其兵[1] 

机构地区：[1]北京化工大学自动化研究所,北京100029 [2]青岛高校软控股份有限公司,山东青岛266045

出　　处：《信息与控制》2010年第2期147-151,共5页Information and Control

基　　金：国家863计划资助项目(2008AA04Z131);北京市优秀人才培养资助项目(2009D013000000003)

摘　　要：对于多扰动动态下的线性时不变控制器的性能评价进行了研究.针对系统具有多个扰动动态的情况,提出了一种新的控制器性能评价方法.这一方法构建了一个加权的性能指标,权值与不同扰动的种类和优先级相对应.同时该方法可以明确计算出各个扰动的结构闭环输出方差的下限值.通过为不同的扰动选取适当的权值和方差范围,可以计算得出最优的输出方差.将这一最优方差值作为基准就可以评价实际生产系统的控制性能.仿真例子表明了该方法的有效性.This paper focuses on performance assessment of linear time-invariant controller subject to multi-disturbance dynamics. A new method of performance assessment for the system subject to multi-disturbance dynamics is proposed. A weighted performance index is introduced, which weights each disturbance to suggest the type and the preference to each of them. Also, the exact output variance lower limit of the structured closed-loop response for each disturbance can be obtained. Once the weights and variance limits are determined, the optimum value of the variance can be calculated. The optimum variance can be used as a benchmark to assess the control performance of the actual system. Simulation results show the validity of the proposed method.

关 键 词：控制器性能评价 多扰动动态 输出方差限制 闭环响应 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]