Abstract
Recent development of the adaptive and optimum control has brought many identification methods. Among these methods, the method using correlation technique is popularly used, for it is not contaminated so much by noise and the operating plant to be measured is not so much disturbed during measuring time. This correlation method becomes useful when dynamics ofthe static process is required to be measured in the weighting function form, because cross-correlation between input and output directly gives it by using white noise as its input test signal. But this cross-correlation function does not give the weighting function of the astatic process.
This paper presents an improved method that the certain transormed signal of the input and output directly gives weighting function of astatic process. This method also makes it possible to measure the derivatives of the weighting function. This paper also discuss the case when pseudo-random signal is used as input test signal instead of white noise. Several analog computer runs show satisfactory results.
