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Damghan University

University Blvd, Damghan, IR

Mohammad Reza Zarrabi

Assistant Professor of Applied Mathematics

DOI: 10.1504/IJMIC.2015.071888

A new sliding mode control (SMC) design approach using measure theory and Lyapunov functional candidate is presented for nonlinear control problems with disturbances. Lyapunov function is supposed for designing a sliding surface (SS). In fact, the problem that is considered is as follows. A state trajectory from a given initial point reaches a given point on a sliding surface in a short time, and then tends to the origin (equilibrium point) along the sliding surface. Measure theory approach with embedding process is used to solve such a problem in two phases. In the first phase, after designing an appropriate SS by a suggested Lyapunov function, an embedding is constructed to solve a time optimal control problem such that the system trajectory reaches the SS in minimum time, then in the second phase, using SS, a control is designed such that the system trajectory tends to the origin along the SS. Copyright © 2015 Inderscience Enterprises Ltd.

AUTHOR KEYWORDS: Lyapunov function; Measure theory; Sliding mode control; Sliding surface design; SMC; Time optimal control

INDEX KEYWORDS: Discrete time control systems; Lyapunov functions; Optimal control systems; Problem solving; Trajectories, Lyapunov functionals; Measure theory; Nonlinear control problems; Sliding surface; SMC; System trajectory; Time optimal control; Time-optimal control problems, Sliding mode control

PUBLISHER: Inderscience Enterprises Ltd.