MODELLING ERRORS OF NONSINUSOIDAL CAPACITANCE MEASURING METHODS

Abstract

In the last few years several new digital methods have been developed for capacitance measurements. Articles introducing them usually deal only with the measuring errors of the instruments and ignore the modelling errors caused by the non-ideal behaviour of the real objects. After reviewing the models of capacitors and the nonsinusoidal capacitance measuring methods, the paper gives the upper bounds of the modelling errors and deter- mines the equivalent frequency of the methods. The calculated modelling errors give the theoretically attainable accuracy of the methods.