標題: Design of general structured observers for linear systems with unknown inputs
作者: Chang, SK
You, WT
Hsu, PL
電控工程研究所
Institute of Electrical and Control Engineering
公開日期: 1-三月-1997
摘要: Using the framework of the general structured (GS) observer, we present a straightforward procedure for designing an unknown input observer (UIO) for a linear system subject to unknown inputs ol uncertain disturbances. The set of all GS observers insensitive to unknown inputs is derived in this paper. Moreover, an extension of the UIO, called the extended UIO, is developed to estimate both the system state and the unknown input simultaneously. We show the existence conditions of a stable UIO are the same as those of a stable left inverse system. III addition, well-conditioned designs for both the state and unknown input estimations ale also explored. Conditions of transmission zeros reveal that to achieve a stable UIO, the uncertain system should be minimum-phase. To overcome this restriction, we adopt a two-delay output stabilized method to design the stabilized UIO without implementing extra sensors. Experimental results for a DC servo motor system demonstrate the applicability of the proposed methodologies. Copyright (C) 1997 Published by Elsevier Science Ltd.
URI: http://dx.doi.org/10.1016/S0016-0032(96)00077-4
http://hdl.handle.net/11536/687
ISSN: 0016-0032
DOI: 10.1016/S0016-0032(96)00077-4
期刊: JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
Volume: 334B
Issue: 2
起始頁: 213
結束頁: 232
顯示於類別:期刊論文


文件中的檔案:

  1. A1997WF85300004.pdf