控制系统的一种直接盲辨识方法

Direct blind identification for control system

提出一种在时域中直接盲辨识系统传递函数的方法。首先利用过采样方法,将SISO系统转换为具有相同零极点的SIMO系统进行处理;然后通过对新的SIMO模型先估计分子参数、后估计分母参数的方法,即可获得原SISO模型的参数估计。该方法也可用于辨识非最小相位系统。

A direct blind identification method for transfer function model in time domain is presented. By sampling the output signal in a multirate, a SISO system is transformed into a SIMO system which has common poles. The parameter estimate of the original SISO model is obtained by first estimating the numerator of the new SIMO model transfer function and then the common denominator. The method can be used to identify a transfer function model of nonminimum phase system.