原点極を含む系に対するSMO型FDIフィルタの設計と衛星姿勢制御系への応用

摘要

原点極を含む対象について，SMOに基づくFDIフィrnルタの設計方法を提案し，人工衛星の姿勢制御系へのrn適用を行った．計算機シミュレーション結果によれば,rn異常推定が可能であり，良好な推定性能が得られるこrnとが確認できた．%FDI (Fault Detection and Isolation) filters are very important and useful scheme for guaranteeing safety and reliability of realistic active control systems. The FDI filter design method based on the sliding mode observer proposed by Edwards provides desirable performances for detection of faults in comparison with other methods such as H_∞ filters, etc. However, the method can not be applied to a system which includes poles at the origin such as an attitude control system of a satellite. This paper proposes a method to avoid the problem of the poles and an application result to a satellite control system is provided. Furthermore, an idea of virtual sensor outputs is proposed for improvement of fault estimation performances.