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Closed-loop identification with an unstable or nonminimum phase controller

有一个不稳定或非最小的阶段控制器的靠近环的鉴定

作     者:Codrons, B Anderson, BDO Gevers, M 

作者机构:Univ Catholique Louvain CESAME B-1348 Louvain Belgium Laborelec SC Prod Line Proc Control B-1630 Linkebeek Belgium Australian Natl Univ Res Sch Informat Sci & Engn Canberra ACT 0200 Australia 

出 版 物:《AUTOMATICA》 (自动学)

年 卷 期:2002年第38卷第12期

页      面:2127-2137页

核心收录:

学科分类:0711[理学-系统科学] 0808[工学-电气工程] 07[理学] 08[工学] 070105[理学-运筹学与控制论] 081101[工学-控制理论与控制工程] 0811[工学-控制科学与工程] 0701[理学-数学] 071101[理学-系统理论] 

基  金:Federal Ministry of Science Office of Naval Research, ONR Army Research Office, ARO 

主  题:closed-loop identification internal stability ustable or nonminimurn phase controller control design 

摘      要:In many practical cases, the identification of a system is done in closed loop with some controller. In this paper, we show that the internal stability of the resulting model, in closed loop with the same controller, is not always guaranteed if this controller is unstable and/or nonminimum phase, and that the classical closed-loop prediction-error identification methods present different properties regarding this stability issue. With some of these methods, closed-loop instability of the identified model is actually guaranteed. This is a serious drawback if this model is to be used for the design of a new controller. We give guidelines to avoid the emergence of this instability problem;these guidelines concern both the experiment design and the choice of the identification method. (C) 2002 Elsevier Science Ltd. All rights reserved.

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