Advanced Analysis of Haar Transform-Based Control for DC Motors

A careful analysis of the system formed by a dc motor fed by a chopper has been performed in this work thanks to a sophisticated mathematical apparatus based on Haar transform. Previous mathematical analysis has been conducted through Haar functions in order to establish bases for a reliable and efficient real time control of chopper-motor systems. The tool based on the general framework of wavelets has been improved and better tuned on this specific application. A more accurate comparison of existing methods used to solve differential equations and the Haar domain techniques are presented and critically discussed. Transient conditions during the starting process and duty cycle effects can usefully be examined using such technique, putting into evidence specific characteristics of the chopper-motor system. Examples describing the application of the proposed technique are presented and critically discussed.