Stable Routh-Padé-type approximation in model reduction of interval systems  

作　　者：顾传青 杨健 

机构地区：[1]Department of Mathematics,College of Sciences,Shanghai University

出　　处：《Journal of Shanghai University(English Edition)》2010年第5期369-373,共5页上海大学学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.10271074);the Shanghai Leading Academic Discipline Project (Grant No.J50101)

摘　　要：An interval Pade-type approximation is introduced and then Routh-Pade-type method （IRPTM） is presented to model reduction in interval systems. The denominator in reduced model is obtained from the stable Routh table, and its numerator is constructed by the interval Pade-type definition. Compared to the existing Routh-Pade method, IRPTM does not need to solve linear interval equations theoretical analysis shows that IRPTM has example is given to illustrate our method. Hence, we do not have to compute smaller computational cost than that interval division in the process. Moreover, of Routh-Pade method. A typical numericalAn interval Pade-type approximation is introduced and then Routh-Pade-type method （IRPTM） is presented to model reduction in interval systems. The denominator in reduced model is obtained from the stable Routh table, and its numerator is constructed by the interval Pade-type definition. Compared to the existing Routh-Pade method, IRPTM does not need to solve linear interval equations theoretical analysis shows that IRPTM has example is given to illustrate our method. Hence, we do not have to compute smaller computational cost than that interval division in the process. Moreover, of Routh-Pade method. A typical numerical

关 键 词：interval system model reduction Routh-table Pade-type approximant Routh-Pad6-type method 

分 类 号：O242.1[理学—计算数学]