Adaptive tracking control based on zero phase error
零相差自适应跟踪控制系统设计

An adaptive tracking control based on zero phase error is presented.First,state-variable filters based on the state equations for reference model with transfer function being 1 are introduced.Then,an adaptive law with generalized output error is designed.The structure of the controller is relatively simple and it has better servo performance.Finally,the simulation results show that the method can improve the performance of the dynamic system with unknown parameters or time_varying parameters.