Fault Accommodation of Multiple Faults for a Class of Nonlinear Uncertain Systems: A Dynamic Fault Isolation Information Framework

被引:6
作者
Zhao, Dong [1 ]
Shi, Yang [2 ]
Li, Yueyang [3 ]
Liu, Shuai [4 ]
机构
[1] Beihang Univ, Sch Cyber Sci & Technol, Beijing 100191, Peoples R China
[2] Univ Victoria, Dept Mech Engn, Victoria, BC V8W 2Y2, Canada
[3] Univ Jinan, Sch Elect Engn, Jinan 250022, Peoples R China
[4] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Peoples R China
基金
中国国家自然科学基金; 北京市自然科学基金;
关键词
Fault diagnosis; Fault detection; Uncertainty; Uncertain systems; Fault tolerant systems; Fault tolerance; Vectors; Adaptive control; fault accommodation; fault isolation; multiple faults; nonlinear systems; TIME-VARYING SYSTEMS; TOLERANT CONTROL-SYSTEMS; MULTIPLICATIVE NOISE; ROBUST-DETECTION; OBSERVER; SENSOR;
D O I
10.1109/TAC.2024.3387009
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A new fault accommodation scheme is proposed for a class of nonlinear uncertain systems against multiple process faults. Different from the traditional fault detection information triggered static fault accommodation scheme for dealing with single batch of fault, a targeted and dynamic fault accommodation scheme is proposed based on the availability and quality of the fault information extracted by fault detection and isolation modules. A nominal controller is designed to maintain the essential tracking performance before a fault is detected, and it is reconfigured by the adaptive fault accommodation controller after fault detection. To deal with multiple process faults, the fault information acquisition based on fault detection and isolation modules is first formulated by fault isolation modes, including zero fault isolation, partial fault isolation, full fault isolation, missed fault isolation, and initialized fault isolation. With the established fault isolation modes, the dynamic fault accommodation scheme is proposed, where the adaptive fault accommodation controller updates synchronously with respect to the change of the available fault isolation modes. The performance of the closed-loop control system under different fault accommodation scenarios is rigorously analyzed. One example is used to show the effectiveness and properties of the proposed controllers.
引用
收藏
页码:7012 / 7019
页数:8
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