多输入多输出系统的滑模控制器设计及其应用

研究了一类多输入多输出系统的滑模控制问题,采用一种改进的指数趋近律,有效降低变结构所产生的抖振,并且给出理论性证明.将提出的设计方法应用于液压活套控制系统设计,将系统中的活套高度和活套张力的耦合关系当作干扰来处理.仿真结果验证了所提方法的有效性,该控制器可使活套控制系统获得较好的控制效果,并使活套系统迅速达到平衡稳定状态.

Design of Sliding Mode Controller for MIMO System and Its Application

The problem of sliding mode control was investigated for a class of MIMO system. A modified exponential approximation law was used to effectively reduce the chattering caused by variable structure control,and the theoretical proof was given.The proposed method was applied to the design of hydraulic looper systems,where the coupling between looper height and tension control were regarded as interference.Simulation results demonstrated the effectiveness of the proposed method.The controller could make the looper systems get better control performance and reach a stable equilibrium state quickly.