earticle

영어

The sliding mode control problem is investigated for a class of nonlinear systems with the unmatched nonlinearity which satisfies a quadratic constraint. Based on Lyapunov stability theory, utilizing the singular value decomposition method, the sliding mode control is formulated to stabilize the considered systems. Meanwhile, the bounds on the nonlinear term which this type of systems can tolerate without going unstable are maximized. More importantly, an efficient sliding mode control law with tuned parameters is designed to guarantee the state variables to converge to the reference state in finite time and remain onto it in the subsequent time. Finally, simulation results are presented to illustrate the effectiveness of the control strategy.