应用对消原理辨识传递函数
The Identification of Transfer Function Through Cancellation Principle
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摘要: 本文提出了一种辨识系统传递函数的新方法.它是通过引入预滤波器对输入信号进行 预处理,调整预滤波器的参数,使其实现与系统传递函数的部分对消,并应用对消原理而得到 的一种辨识方法.这种方法可以分别辨识传递函数的分子、分母及其因子,而且不需要对噪 声进行建模.此法还可以用来辨识误差模型.Abstract: A new method of identifying transfer function is presented. It is realized through introducing prefilter to the input signal and adjusting the parameters of the prefilter so as to cancel some parts of the transfer function. This method can be used to estimate the numerator denominator and the factors of the transfer function separately. It need not to model the noise and it can also be used to identify the error model.
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Key words:
- System identification /
- identification of transfer function /
- prefiltering /
- cancellation
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