Fault Mode Analysis and Convex Optimization-Based Fault-Tolerant Control for New Type Dissimilar Redundant Actuation System of Near Space Vehicle

被引:2
|
作者
Huang, Jian [1 ]
Wang, Jun [1 ]
Li, Weikang [1 ]
Liu, Di [2 ]
Shi, Cun [2 ]
Zhang, Fan [1 ]
机构
[1] Beijing Inst Automat Control Equipment, Beijing 100120, Peoples R China
[2] Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 23期
基金
中国国家自然科学基金;
关键词
new type dissimilar redundant actuation system; near space vehicle; fault-tolerant control; linear matrix inequality; LMI CONDITIONS; DESIGN;
D O I
10.3390/app132312567
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A new type dissimilar redundant actuation system (NT-DRAS), which is composed of an electro-hydrostatic actuator (EHA) and an electro-mechanical actuator (EMA), is applied in high value unmanned aerial vehicles such as the future near space vehicles to improve their reliability and performance index simultaneously. Further improvement in the flight safety is achieved with the fault-tolerant control (FTC) technique which deals with system faults. This paper proposes a novel convex optimization-based fault-tolerant control (CO-FTC) strategy for the NT-DRAS subject to gradual faults which are included in the state space representation of the system. A convex analysis-based treatment for system uncertainty caused by gradual faults is applied to determine the control gain matrix. The existence condition of the control gain matrix is optimized in the linear matrix inequality (LMI) form. Finally, the determined subsystems based on the novel technique is used to solve the modeled robust FTC problem. Case studies of NT-DRAS subject to different gradual faults have been accomplished to illustrate the FTC necessity for NT-DRAS. Furthermore, the effectiveness of the proposed CO-FTC strategy is validated by comparative analysis of the simulation results.
引用
收藏
页数:24
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