Abstract
Results are presented from two identification exercises which have been used to determine the resistance and capacitance values of a typical electro-rheological fluid. Simulated data, in which the parameter values are known a-priori, are employed to compare the two methods with regard to both accuracy and computational efficiency. The experimental data analysed are from a parallel plate flow mode valve restrictor. Both ap proaches produce similar results over the operating range of moderate to high excitation frequency, but yield substantially different results at low frequencies. Possible reasons for these inconsistencies and methods for resolving the problems are discussed. Amongst these problems noise on the processed signal is a major factor.
Get full access to this article
View all access options for this article.