Adaptive control of approach tracking in electro-hydraulic servo system

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.