不確定離散時滯系統(tǒng)的D穩(wěn)定魯棒容錯控制

針對離散一步時滯系統(tǒng),研究了傳感器失效后有一定性能保證的D 穩(wěn)定容錯控制問題, 給出一個對傳感器失效具有完整性的D 穩(wěn)定控制系統(tǒng)需滿足的一個充分條件,進而討論了參數(shù)不確定離散時滯系統(tǒng)的D穩(wěn)定魯棒容錯控制問題,給出了D 穩(wěn)定魯棒容錯控制系統(tǒng)的設計方法及步驟,并把相應結果推廣到執(zhí)行器失效的情況,最后用一個設計示例及仿真結果驗證了這種設計方法的有效性.
關鍵詞: 容錯控制; D 穩(wěn)定; 時滯系統(tǒng); 魯棒性; 離散系統(tǒng)
　　Abstract : D- stable fault- tolerant control problem is studied for discrete systems with a time delay , which can guarantee some performance after sensor failures . A sufficient condition for D- stable control systems possessing integrity against sensor failures is presented. Then the D- stable robust fault- tolerant control problem is studied for uncertain discrete time- delay systems . The design method of D- stable robust fault- tolerant control systems is given , and the results are extended to the situation of ac2 tuator failures . Finally , an illustrative example and simulation results are given to demonstrate the effectiveness of the proposed method.
Key words : fault- tolerant control ; D- stability ; time- delay systems ; robustness ; discrete systems