Abstract
Many methods have deen developed in consideration of the importance of identification. In the recent years the high accuracy devices such as the operational amplifier and the multiplier have been developed. Though the identification methods using analog computation have been long reported, in this paper the identification method of the low order process is treated re-evaluating the merits of analog computation.
First, the impulse response function of the process is expanded by means of orthnormal function filter, and the order of this process is decided from the discriminant which is expressed by the relation among the above expanded coefficients. For example, the form of this process is designated as the second-order lag system. At the same time, the computation rules which determine the values of the unknown parameters are also given. Finally, the approximate deviations from the true values of expansion coefficients are estimated.
