Fault detection for output feedback control systems with actuator stuck faults: A steady‐state‐based approach |
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| Authors: | Guang‐Hong Yang Heng Wang Lihua Xie |
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| Affiliation: | 1. Key Laboratory of Integrated Automation of Process Industry (Ministry of Education), College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110004, People's Republic of China;2. College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China;3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore |
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| Abstract: | The paper studies the fault detection problem for output feedback control systems with bounded disturbances and nonzero constant reference inputs. A steady‐state‐based approach is proposed which can be used to detect small actuator stuck faults including actuator outage (the stuck value is zero). These small stuck faults, especially the outage faults, cannot be detected effectively using the existing techniques. A dynamic output feedback controller and a weighting matrix are designed simultaneously. The dynamic output feedback controller stabilizes the closed‐loop system for both fault‐free and faulty cases and attenuates the effects of disturbances. By manipulating the steady‐state values of system states with the detection weighting matrix, a residual is then generated, through which actuator stuck faults including actuator outages can be detected effectively. Simulation results are included to demonstrate our design procedure. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | fault detection simultaneous fault detection and control actuator stuck fault dynamic output feedback linear matrix inequality (LMI) |
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