滑模变结构控制在跟踪伺服系统中的应用

针对某跟踪伺服系统中包含非线性和参数不确定性问题，依据滑模变结构控制理论，提出了基于极点配置的滑模变结构控制器设计方法，建立了被控系统的数学模型，并给出了采用极点配置方法确定切换函数和用到达律确定控制函数的具体求解过程。仿真结果表明，该控制方案比经典控制的效果更好，提高了系统响应的快速性和鲁棒性，减小了超调，并且控制器的结构简单，易于实现。

Sliding mode variable structure control for the tracking servo system

According to the theory of sliding mode variable structure control,this paper discusses a design method of the sliding mode variable structure controller based on pole-placement for the tracking servo system,which contains nonlinearities and parameters uncertainties.It establishes the math model of the control system,gives the computing process of determining the switching function by adopting pole-place method and determining the control function by adopting reaching law.Simulation results show that the new control method exhibits higher performance than the classical control method.The rapidness and robustness of the system are improved.The overshoot is reduced.Moreover,this control system's realization is simple because of its simple structure.