1995 Volume 1995 Pages 53-58
This paper is concerned with the problem of determining unknown time delay and coefficients of a transfer function. First, when the plant input is a white noise, we show that the time delay can be estimated accurately by correlation analysis. Then, we can determine coeffcients of transfer function by least-squares (LS) method. In order to apply LS method, pre-filtering of input and output observations is necessary to which we use λ transformation-based pre-filtering. Another method to estimate time delay is considered by decoupling the estimations of time delay and system parameters based on the variable projection theory. Results of simulation are included.
