Analysis of stability robustness for generalized state-space systems with structured perturbations
Systems & Control Letters
H∞ control for descriptor systems: a matrix inequalities approach
Automatica (Journal of IFAC)
Singular Control Systems
Brief paper: Control for discrete singular hybrid systems
Automatica (Journal of IFAC)
IEEE Transactions on Signal Processing
Adaptive Reliable H∞ Filtering Against Sensor Failures
IEEE Transactions on Signal Processing - Part I
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Brief paper: H∞ filtering with randomly occurring sensor saturations and missing measurements
Automatica (Journal of IFAC)
Adaptive sliding mode control for stochastic Markovian jumping systems with actuator degradation
Automatica (Journal of IFAC)
International Journal of Automation and Computing
Hi-index | 22.15 |
In this paper, the problem of robust fault tolerant control for a class of singular systems subject to both time-varying state-dependent nonlinear perturbation and actuator saturation is investigated. A sufficient condition for the existence of a fixed-gain controller is first proposed which guarantees the regularity, impulse-free and stability of the closed-loop system under all possible faults. An optimization problem with LMI constraints is formulated to determine the largest contractively invariant ellipsoid. An adaptive fault tolerant controller is then developed to compensate for the failure effects on the system by estimating the fault and updating the design parameter matrices online. Both of these two controllers are in the form of a saturation avoidance feedback with the advantage of relatively small actuator capacities compared with the high gain counterpart. An example is included to illustrate the proposed procedures and their effectiveness.