Robust $H_2$ observer design for actuator degradation: Application to suspension system

Rodrigues, Sensor Fault and Unknown Input Estimation Based on Proportional Integral Observer Applied to LPV Descriptor Systems.. 8th IFAC Symposium on Fault Detection, Supervision

Index Terms—Discrete Event Dynamics Systems, Idempotent Semirings, Max-Plus Algebra, Residuation Theory, Timed Event Graphs, Dioid, Observer, State Estimation..

Key words: Nonlinear system, unknown inputs, multiple model approach, multiple observer, asymptotic stability, linear matrix

Hence, vector f d (t) is considered in this FDI scheme as an unknown input. In order to be able to detect and isolate an actuator fault, we have to consider that the control matrix B

Unknown input proportional multiple-integral observer design for linear descriptor systems: application to state and fault estimation.. Leith D.J.,

The state and unknown inputs estimation are obtained by a polytopic Unknown Inputs Proportional Integral Observer which has been used here for the detection, isolation and estimation

Compared to the existing re- sults in the literature, this paper deals with the unknown input observer design problem for a more general sort of linear time- delay systems where

Koenig, “Unknown input proportional multiple-integral oberver design for linear descriptor systems: application to state and fault estimation,” IEEE Transactions on Automatic