Fault detection in base-isolation systems via a restoring force observer
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This paper proposes a fault detection method for hysteretic base-isolation systems. One of the key contributions of this work is a Lyapunov-based restoring force observer that leads to the design of a robust fault detection scheme. The different fault types considered are stiffness and damping variations in the system. The proposed fault estimation method provides a direct estimate of the size and severity of the fault, which can be important in many civil engineering applications. A design procedure is described, and nonlinear simulation results are presented to demonstrate the applicability of the proposed method.
CitacióVidal, Y. [et al.]. Fault detection in base-isolation systems via a restoring force observer. A: International Conference on Control and Fault-Tolerant Systems. "Conference on Control and Fault-Tolerant Systems: final programme and book of abstracts: october 6-8, 2010". Nice, France, p. 777-782.