一、引言随着在线控制技术,特别是自适应控制技术的迅速发展,控制理论及应用人员对系统在线辨识方法越来越给予足够的重视。至今为止,大多数辨识方法都集中在定常或缓变参数的估计上。对于时变参数,特别是对于变化较快的时变参数的辩识方法,还没有形成严密的理论。 I. INTRODUCTION With the rapid development of online control technology, especially adaptive control technology, control theory and application personnel pay more and more attention to the on-line identification method of the system. To date, most identification methods have focused on the estimation of stationary or slowly changing parameters. For time-varying parameters, especially for the rapid change of time-varying parameters of the identification method, there is no strict theory.