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The problem of designing an adaptive robust Hinfin dynamic output feedback controller for uncertain linear systems is considered. The uncertainties are assumed to be time-varying, unknown, but bounded, which appear affinely in the matrices of system model. Based on the online estimations of uncertain parameters, a robust dynamic output feedback controller with variable gains is constructed to compensate...
This paper presents a linear matrix inequality (LMI) approach to solve the robust fault-tolerant control (FTC) problem with actuator failures. According to an equivalent transformation, fault effect factors can be put in linear fractional transformation (LFT) form. Then, based on the information from the fault detection and diagnosis (FDI) mechanism, the fault-tolerant control problem can be solved...
The problem of robust reliable controller design against actuator faults for systems with polytopic type uncertainty is addressed. The strategy that using sampled- data control with high-order hold is adopted to tackle the situations that no sampled-data controller with zero-order hold in existence. This problem is formulated in terms of solutions to a set of linear matrix inequalities. The efficiency...
This paper studies the problems of robust Hinfin performance analysis and controller design for continuous-time networked control systems (NCSs). A new type of Lyapunov functionals is exploited to derive sufficient conditions for guaranteeing the robust exponential stability and Hinfin performance of the considered system, and robust Hinfin controller design is presented. It is shown that the newly...
In this paper, an adaptive fuzzy approach is proposed to deal with robust output tracking of unknown nonlinear systems with actuator failures. The actuator failures under consideration can be both of lock-in-place and loss of effectiveness. By incorporating fuzzy logic approximation, adaptive algorithm and attenuation technique to our design, a fault tolerant control law is developed to guarantee...
The paper studies the problem of simultaneous design of reliable filter and fault detector for a class of linear continuous-time systems with bounded disturbances and nonzero constant reference inputs. An Hinfin filter and two detection weighting matrices are designed simultaneously. The filter is designed for both fault free and faulty cases, and by manipulating the steady-state values of the filter...
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