电液伺服系统的渐近跟踪自适应控制

Adaptive control of approach tracking in electro-hydraulic servo system

根据电液伺服系统参数不稳定的特点,将渐近跟踪理论与自适应控制相结合,提出了一种基于参数辨识的电液伺服系统的渐近跟踪自适应控制方法,利用状态反馈动态配置系统的希望特征值和在输入端动态调节前馈增益实现渐近跟踪,达到自适应控制的目的。仿真结果表明,该方法稳定可靠,具有较高理论意义和实用价值。

In view of the fact that the parameters in the electro-hydraulic servo system are unsteady,the theory of approach tracking is combined with that of adaptive control,and an algorithm based on parameter identification is brought forward for the adaptive control of approach tracking in the electro-hydraulic servo system. The system's expected eigenvalue is determined dynamically by using state feedback and the input gain also adjusted dynamically so as to achieve approach tracking and adaptive control. The results of simulation show that the method is steady and reliable and has both theoretical and practical value.