This paper proposes a generalized design procedure for the extended state observer (ESO) based sliding mode control voltage source converter (VSC) station. In this work, non-linear loads and external disturbances parameter perturbations of station is considered as an which are bounded. The ESO designed to reject include not only unmeasured system states but also modeling uncertainties. At same ...

This paper examines saturated control of a general class of uncertain nonlinear systems with timedelayed actuation and additive bounded disturbances. The bound on the control is known a priori and can be adjusted by changing the feedback gains. A Lyapunov-based stability analysis utilizing Lyapunov–Krasovskii (LK) functionals is provided to prove uniformly ultimately bounded tracking despite un...

A direct adaptive nonlinear control framework for multivariable nonlinear uncertain systems with exogenous L2 disturbances is developed. The proposed framework is Lyapunov-based and guarantees partial asymptotic stability of the closed-loop system; that is, asymptotic stability with respect to part of the closed-loop system states associated with the plant, as well as a nonexpansivity constrain...

An H∞ filtering problem for a system driven by uncertain previewable signals is discussed, and a design method of an H∞ filtering law is presented. The problem pertains to generalized H∞ filtering with previewable reference signals or disturbances. The solvability condition is characterized by the solutions of differential/algebraic Riccati equations, and some interpretations are provided for t...

This paper addresses computations of a robustly safe region on the state space for uncertain constrained systems subject to disturbances based on a probabilistic approach. We first define a probabilistic output admissible (POA) set. This set is a subset of the state space which excludes with high probability initial states violating the constraint. Then, an algorithm for computing the POA set i...

This paper addresses the problem of H∞ fuzzy observer-based non-PDC controller design for uncertain T-S fuzzy systems with external disturbances. The synthesis of the observer-based controller is based on a fuzzy Lyapunov function and the descriptor redundancy approach. Moreover, the design is extended for the problem with control constraint. The observer and controller gains are obtained by so...

It is well known that many engineering control systems such as conventional oil-chemical industrial processes, nuclear reactors, long transmission lines in pneumatic, hydraulic and rolling mill systems, flexible joint robotic manipulators and machine-tool systems, jet engine and automobile control, human-autopilot systems, ground controlled satellite and networked control and communication syst...

Abstract: This paper presents a nonlinear controller for uncertain single-input–single-output (SISO) nonlinear systems. The adopted approach is based on the feedback linearization strategy and enhanced by a fuzzy inference algorithm to cope with modeling inaccuracies and external disturbances that can arise. The boundedness and convergence properties of the tracking error vector are analyticall...

This paper proposes an approach to algorithmically synthesize control strategies for discrete-time nonlinear uncertain systems based on reachable set computations using the ellipsoidal calculus. For given ellipsoidal initial sets and bounded ellipsoidal disturbances, the proposed algorithm iterates over conservatively approximating and LMI-constrained optimization problems to compute stabilizin...