【摘要】 在多率采样系统中,采样间隔不均匀.本文综述了文献中有关多率采样系统的数学模型,如线性周期时变模型、频域模型和连续状态空间模型等.同时对相应的辨识方法,如提升、频域方法、子空间辨识方法等,也进行了全面的综述.对多率采样系统辨识中存在的一些问题,包括辨识模型的选择、一致性问题、带约束条件的辨识方法和辨识收敛性等,也作了深入的讨论.更多还原

【Abstract】 In multirate sampled systems,sampling periods are not uniform.This article briefly reviews the existing mathematical models of multirate sampled systems including the linear periodic time-varying model,the frequency domain model,and the continuous time state space model.The corresponding identification methods,such as lifting method,fre-quency domain method and subspace method,are also discussed.Model selection,consistency,constrained identification,convergence and other problems in the identification of multirate sampled system are deeply discussed.更多还原