滑动模态控制器在液压伺服系统中的应用

真实的液压伺服系统由于受外界存在的各种干扰因素的影响,导致了系统的动力学行为不准确,而常规PID控制无法克服这些因素带来的影响。为了寻求一种较为有效的控制策略,分析了基于Lyapunov方法的滑动模态控制策略。同时为达到期望效果,选取了合适的Q阵和k值,并通过对k值的优化,得出了参数间的耦合作用。最后通过实例仿真分析,证明了滑动模态控制策略在液压伺服系统中具有很好的鲁棒性。

Application of Sliding Mode Controller in Hydraulic Servo System

The true hydraulic servo system due to the existence of a variety of outside interference factors,led to the dynamic behavior of real sys tems are not accurate,while the conventional PID control cannot overcome the impact of these factors. In order to find a more effectiv control strategies,analyse methods based on Lyapunov sliding mode control strategy. At the same time,to achieve the desired effect select the appropriate Q-matrix and the k value,and through the optimization of k values obtained the coupling between parameters Finally,an example simulation analysis proves that sliding mode control strategy in hydraulic servo system has good robustness.