Discussion on: “A Comparison of Sliding Mode and Unknown Input Observer for Fault Reconstruction”

Discussion on: A Comparison of Sliding Mode and Unknown Input Observer for Fault Reconstruction

Discussion on: ‘‘A Comparison of Sliding Mode and Unknown Input Observers for Fault Reconstruction’’

The paper by Edwards and Tan compares sliding mode observers (SMOs) to unknown input observers (UIOs) for the purpose of reconstructing faults that affect linear dynamical systems in the presence of disturbances. This comparison reveals some interesting parallels between the two types of observers. In this discussion, we provide an interpretation of UIOs from the point of view of system inversi...

An Unknown Input Observer for Fault Detection Based on Sliding Mode Observer in Electrical Steering Assist Systems

Steering assist system controls the force transfer behavior of the steering system and improves the steering probability of the vehicle. Moreover, it is an interface between the diver and vehicle. Fault detection in electrical assisted steering systems is a challenging problem due to frequently use of these systems. This paper addresses the fault detection and reconstruction in automotive elect...

an unknown input observer for fault detection based on sliding mode observer in electrical steering assist systems

steering assist system controls the force transfer behavior of the steering system and improves the steering probability of the vehicle. moreover, it is an interface between the diver and vehicle. fault detection in electrical assisted steering systems is a challenging problem due to frequently use of these systems. this paper addresses the fault detection and reconstruction in automotive elect...

Fault Reconstruction Based on Sliding Mode Observer for Nonlinear Systems

This paper presents a precision fault reconstruction scheme for a class of nonlinear systems involving unknown input disturbances. First, using the coordinate transformation algorithm, the disturbances and faults of the system are fully decoupled. Therefore, it is possible to eliminate the influence of disturbances to the system, namely, better disturbances robustness. On this basis, the design...