Robust sensor fault estimation for descriptor-LPV systems with unmeasurable gain scheduling functions: Application to an anaerobic bioreactor

Robust Sensor Fault Estimation for Descriptor-LPV Systems with Unmeasurable Gain Scheduling Functions: Application to an Anaerobic Bioreactor

This paper addresses the design of a state estimation and sensor fault detection, isolation and fault estimation observer for descriptor-linear parameter varying (D-LPV) systems. In contrast to where the scheduling functions depend on some measurable time varying state, the proposed method considers the scheduling function depending on an unmeasurable state vector. In order to isolate, detect a...

Fault Diagnosis Based on Robust Observer for Descriptor-LPV Systems with Unmeasurable Scheduling Functions

This paper design a method for fault detection and isolation based on observers for systems modelled as Descriptor-Linear Parameter Varying (D-LPV) with Unmeasurable Scheduling Functions (USF). The first contribution of the paper is deal with the USF problem by transforming the into an uncertain D-LPV system with an estimated scheduling parameter. As a second contribution, a robust LPV observer...

Sensor fault diagnosis for a class of LPV descriptor systems

In this paper, a sensor model-based fault diagnosis method for a particular class of linear parameter variant (LPV) systems is developed. The main contribution of this work is to propose an adequate observer that performs fault detection over the whole operating range of the system. The conditions for the existence of an observer are given. Such conditions guarantees the observer convergence an...

An LPV Approach to Sensor Fault Diagnosis of Robotic Arm

One of the major challenges in robotic arms is to diagnosis sensor fault. To address this challenge, this paper presents an LPV approach. Initially, the dynamics of a two-link manipulator is modelled with a polytopic linear parameter varying structure and then by using a descriptor system approach and a robust design of a suitable unknown input observer by means of pole placement method along w...

Sensor fault and unknown input estimation based on proportional integral observer applied to LPV descriptor systems