Title :
Reliable control for systems with block diagonal feedback structure
Author :
Chang, Timothy ; Chen, Zhengfang
Author_Institution :
New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
The reliable control problem for decentralized systems is considered. It concerns the ability of a closed loop system to maintain stability and disturbance rejection properties during arbitrary sensor, controller, and actuator failure without being retuned. The notion of the block decentralized robust servo problem with complete reliability is first introduced to address systems with a block diagonal feedback structure. This is followed by establishing two conditions for reliability: 1) systems satisfying certain steady state interaction characteristics and 2) systems possessing minimum phase “block” transmission zeros. Accordingly, two types are decentralized controllers are applied to achieve reliable control for these two categories of systems. Simulation examples are also included to illustrate the properties of the reliable control system
Keywords :
closed loop systems; decentralised control; feedback; poles and zeros; reliability; robust control; servomechanisms; actuator failure; block decentralized robust servo problem; block diagonal feedback structure; complete reliability; controller failure; decentralized systems; disturbance rejection properties; minimum phase block transmission zeros; reliable control; sensor failure; steady state interaction characteristics; Actuators; Closed loop systems; Control systems; Feedback; Maintenance; Robustness; Sensor phenomena and characterization; Sensor systems; Servomechanisms; Stability;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.876615
