关键词: 二阶滑模, 滑模控制, 多变量系统, 非线性控制系统

Abstract: MIMO second order sliding mode control based on finite state machine strategy is proposed.The approach guarantees the feature that sliding mode control is not sensitive to parameter variation and disturbance，attenuates the chattering phenomenon and solves the stabilization problem by requiring the knowledge of s and just the sign of s in presence of measurement noise with unknown upper bound and parameter variation.Simulation results show this proposed approach realizes stabilization of the control system and is robust against the parameter perturbation.The proposed approach is simple and easy to implement.

Key words: second order sliding mode, Sliding Mode Control（SMC）, multi-variable system, nonlinear control systems