Set-based fault detection and isolation for detectable linear parameter-varying systems

Set-based Fault Detection and Isolation for Detectable Linear Parameter-Varying Systems

In the context of fault detection and isolation of Linear Parameter-Varying (LPV) systems, a challenging task appears when the dynamics and the available measurements render the model unobservable, which invalidates the use of standard Set-Valued Observers (SVOs). Two results are obtained in this paper, namely: using a left-coprime factorization, one can achieve set-valued estimates with ultima...

Active fault detection and isolation of discrete-time linear time-varying systems: a set-membership approach

Fault Detection and Estimation based on Closed-loop Subspace Identification for Linear Parameter Varying Systems

This paper presents a data driven solution of the Fault Identification approach Connected to Subspace Identification (FICSI) for Linear Parameter Varying (LPV) systems. The proposed solution links system identification to fault detection and estimation in affine LPV systems. As an extension of the model-based FICSI-LPV, the data driven solution is also formulated based on the affine LPV model s...

Fault Detection and Isolation Based on Adaptive Observers for Linear Time Varying Systems

A new method for fault detection and isolation (FDI) in stochastic linear time varying (LTV) systems is proposed in this paper. It allows to completely isolate any number of faults regardless of the number of output sensors, thanks to an appropriate assumption on the fault profiles and to some persistent excitation condition. In contrast, most existing methods enabling complete fault isolation ...

Saturation fault-tolerant control for linear parameter varying systems

This paper presents a methodology for designing a fault-tolerant control (FTC) system for linear parameter varying (LPV) systems subject to actuator saturation fault. The FTC system is designed using linear matrix inequality (LMI) and model estimation techniques. The FTC system consists of a nominal control, fault diagnostic, and fault accommodation schemes. These schemes are designed to achiev...