In this paper we design a passive fault tolerant controller against actuator faults for discretetime piecewise affine (PWA) systems. By using dissipativity theory and H∞ analysis, fault tolerant state feedback controller design is expressed as a set of Linear Matrix Inequalities (LMIs). In the current paper, the PWA system switches not only due to the state but also due to the control input. Th...

An iterative learning fault-tolerant control method is designed for an actuator fault intermittent process with simultaneous uncertainties the system parameters. First, tolerance controller using 2D theory, and (ILC) transformed into a Roesser model. Secondly, sufficient conditions controller’s existence are analyzed linear matrix inequality (LMI) technique, gain matrices obtained by convex opt...

We propose explicit state-space based fault detection, isolation and estimation filters that are data-driven and are directly identified from only the system input-output (I/O) measurements and through the system Markov parameters. The proposed procedures do not involve a reduction step and do not require identification of the system extended observability matrix or its left null space. The per...

Sensor-actuator networks are increasingly being used in distributed control of large scale systems. Often these applications are mission-critical and are required to maintain satisfactory performance in the presence of component failures. On the one hand, sensor-actuator network components are becoming inexpensive but they also tend to be unreliable, especially when deployed in harsh or unpredi...

This paper is concerned with the application of Kalman filter based methods for Fault Detection and Identification (FDI). The original Kalman based method, formulated for bias faults only, is extended for three more fault types, namely the actuator or sensor being stuck, sticky or drifting. To benchmark the proposed method, a nonlinear buffer tank system is simulated as well as its linearized v...

This paper considers a sliding mode based allocation scheme for fault tolerant control. The scheme allows redistribution of the control signals to the remaining functioning actuators when a fault or failure occurs. It is shown that faults and even certain total actuator failures can be handled directly without reconfiguring the controller. The results obtained from implementing the controller o...

Fault diagnosis for a closed-loop controlled aeronautical system is considered. The geometry of the problem, the nonlinear model of the aircraft and two guidance laws are described. A new approach to perform fault detection, based on the study of the control signals, is then introduced. The method proposed allows the detection and isolation of actuator faults. Simulation results with measuremen...

Abstract—This paper considers the problem of reliable H∞ control against actuator failures for linear continuous-time systems. The model including actuator partial failures and actuator lock-in-place failures is presented, and the faults of being locked in place are accurately described as zero-frequency disturbances and their attenuation performances are described by using small gain condition...

Integral Sliding Mode Fault Tolerant Control Schemes with Control Allocation Mirza Tariq Hamayun The key attribute of a Fault Tolerant Control (FTC) system is to maintain overall system stability and acceptable performance in the face of faults and failures within the system. In this thesis new integral sliding mode (ISM) control allocation schemes for FTC are proposed, which have the potential...