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arXiv · 2502.18868

Multivariable Generalized Super-Twisting Algorithm Robust Control of Linear Time-Invariant Systems

J. C. Geromel·E. V. L. Nunes·L. Hsu
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Abstract

This paper presents a novel procedure for robust control design of linear time-invariant systems using a Multivariable Generalized Super-Twisting Algorithm (MGSTA). The proposed approach addresses robust stability and performance conditions, considering convex bounded parameter uncertainty in all matrices of the plant state-space realization and Lipschitz exogenous disturbances. The primary characteristic of the closed-loop system, sliding mode finite-time convergence, is thoroughly examined and evaluated. The design conditions, obtained through the proposal of a novel max-type non-differentiable piecewise-continuous Lyapunov function are formulated as Linear Matrix Inequalities (LMIs), which can be efficiently solved using existing computational tools. A fault-tolerant MGSTA control is designed for a mechanical system with three degrees of freedom, illustrating the efficacy of the proposed LMI approach.

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J. C. Geromel, E. V. L. Nunes, L. Hsu. 2025-02-26. Multivariable Generalized Super-Twisting Algorithm Robust Control of Linear Time-Invariant Systems. https://arxiv.org/abs/2502.18868

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