Digital redesign of H controller via bilinear approximation method for state-delayed systems

Leang San Shieh, Wei Min Wang, Jason S.H. Tsai

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)

摘要

Two issues are addressed: digitial modeling of the continuous-time state-delayed system; and digital redesign of the observer-based H controller for the continuous-time state-delayed system. The bilinear approximation method together with the linear interpolation is utilized to find an equivalent discrete-time model of the original continuous-time state-delayed system, so that the states of the obtained discrete-time model closely match those of the original continuous-time statedelayed system. In addition, the same idea is used to establish an equivalent digital controller from the analogue H controller for the continuous-time state-delayed system, so that the states of the digitally controlled sampled-data state-delayed system closely match those of the original analogously controlled continuoustime state-delayed system. A discrete-time observer is constructed from the original continuous-time observer via a modified lifting technique, such that the estimated states of the obtained discrete-time observer match those of the original continuous-time observer at the sampling instants. Using the newly digitally redesigned observer-based controllers, the resulting dynamic states of the overall digitally controlled sampled-data state-delayed systems are able to closely match those of the original observer-based analogously controlled continuous-time state-delayed systems. An illustrative example is given to show the digital modeling and digital redesign results for a state-delayed system.

原文English
頁(從 - 到)665-683
頁數19
期刊International Journal of Control
70
發行號5
DOIs
出版狀態Published - 1998 一月 1

All Science Journal Classification (ASJC) codes

  • 控制與系統工程
  • 電腦科學應用

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