Identification of output error models based on impulse response
基于脉冲响应的输出误差模型的辨识

Based on system impulse response, identification problem of the systems described by output error model was studied using correlation analysis, and its basic idea was to use a finite impulse response parameter model to approach the system model, and the model approximation precision was enhanced with the number N of the number of the impulse response parameters increasing. The theory analysis indicated that the model approximation could meet the requirements in Engineering as long as N is large enough. The proposed method could recursively compute the impulse response parameters and objective function by increasing N in turn from N=1, and estimated the system model parameters by the impulse response parameters. The simulation example shows that the proposed algorithm is effective for estimating the parameters of output error models.