Event-triggered sampling and fault-tolerant control co-design based on fault diagnosis observer  

作　　者：QIU Aibing ZHANG Jing JIANG Bin GU Juping 

机构地区：[1]School of Electrical Engineering, Nantong University [2]School of Automation, Nanjing University of Science and Technology [3]College of Automation Engineering, Nanjing University of Aeronautics and Astronautics

出　　处：《Journal of Systems Engineering and Electronics》2018年第1期176-186,共11页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61473159;61374136;61104028);the Research Innovation Program of Nantong University(YKC16004)

摘　　要：A co-design scheme of event-triggered sampling mechanism and active fault tolerant control(FTC) is developed. Firstly,a fault diagnosis observer is designed to estimate both the fault and the state simultaneously by using the event-triggered sampled output. Some H∞constraints between the estimation errors and the event-triggered sampling mechanism are established to ensure the estimation accuracy. Then, based on the constraints and the obtained fault information, an event-triggered detector and a static fault tolerant controller are co-designed to guarantee the stability of the faulty system and to reduce the sensor communication cost.Furthermore, the problem of the event detector and dynamic FTC co-design is also investigated. Simulation results of an unstable batch reactor are finally provided to illustrate the effectiveness of the proposed method.A co-design scheme of event-triggered sampling mechanism and active fault tolerant control(FTC) is developed. Firstly,a fault diagnosis observer is designed to estimate both the fault and the state simultaneously by using the event-triggered sampled output. Some H_∞ constraints between the estimation errors and the event-triggered sampling mechanism are established to ensure the estimation accuracy. Then, based on the constraints and the obtained fault information, an event-triggered detector and a static fault tolerant controller are co-designed to guarantee the stability of the faulty system and to reduce the sensor communication cost.Furthermore, the problem of the event detector and dynamic FTC co-design is also investigated. Simulation results of an unstable batch reactor are finally provided to illustrate the effectiveness of the proposed method.

关 键 词：event-triggered sampling fault estimation active fault tolerant control(FTC) CO-DESIGN 

分 类 号：N945[自然科学总论—系统科学]