Some improving approach in discrete variable structure control

A reaching law with variable switching sector is presented in this paper, and the VSC of which is designed by the reaching law method is given. It has shown, from the theory analysis and the simulation results, that the stability of sliding mode designed by reaching law with variable switching sector method is better than that of the discrete reaching lawpsilas. So the performance of sliding mode is improved in a certain extent and the robustness of the system is ensured.