参数摄动电液伺服加振系统离散模型到达变结构控制策略的研究

本文针对电液伺服加振系统参数摄动的特点,提出了参数摄动不变性的概念和系统摄动范围的新的估计方法及其本质。在理论上给出了参数摄动线性离散系统模型到达变结构控制(DMRVSC)的设计方法及离散动态补偿器的设计准则,并证明了该方法滑模可达条件成立。该方法减小了系统在切换面上的抖动,提高了系统跟踪精度及鲁棒性。

The research on the discrete model - reaching variable structure control strategy of an electrohydraulic servo vibrating system with parameter disturbance

In view of the characteristics of the parameters disturbance of an electro - hydraulic servo vibrating system, the concept of the invariance of the parameters disturbance is put forward. The new estimating method and its essence of this disturbance are also advanced. On the theory, the design methods of the model - reaching variable structure control strategy and the dynamic compensator are given and the sliding mode reachability is proved. By this strategy, the chattering on the switching surface is reduced and the system tracking precision and robust are raised.