第1筆 /總和 1 筆
/ 1 筆
頁籤選單縮合
題 名 | Robust Fault Detection and Isolation for Uncertain Linear Retarded Systems |
---|---|
作 者 | Jiang, Canghua; Zhou, Donghua; Gao, Furong; | 書刊名 | Asian Journal of Control |
卷 期 | 8:2 民95.06 |
頁 次 | 頁141-152 |
分類號 | 448.942 |
關鍵詞 | Fault detection and isolation; Fault identification; Linear retarded time-delay systems; Uncertain systems; Adaptive observers; |
語 文 | 英文(English) |
英文摘要 | A robust fault detection and isolation scheme is proposed for uncertain continuous linear systems with discrete state delays for both additive and multiplicative faults. Model uncertainties, disturbances and noises are represented as unstructured unknown inputs. The proposed scheme consists of a Luenberger observer for fault detection and a group of adaptive obs4ervers, one for each class for faults, for fault isolation. The threshold determination and fault isolation are based on a multi-observer strategy. Robustness to model uncertainties and disturbances can be guaranteed for the scheme by selecting proper thresholds. All the signals, i.e., the fault estimate and the state and output estimation errors of each isolation observer can be shown to be uniformly bounded, and the estimate of the fault by the matched observer is shown to be satisfactory in the sense of extended L₂ norm. Furthermore, the sensitivity to fault and the fault isolability condition are analyzed also in the paper. Simulations of a heating process for detecting and isolating an actuator gain fault and an additive fault show the proposed scheme is effective. |
本系統中英文摘要資訊取自各篇刊載內容。