Fuzzy-logic Controller for Brushless DC PM Motor

摘要

This paper describes a speed controller for brushless motor. The driver was electronically designed and constructed by the authors to control the speed of a commercial brushless motor. The authors considered the error and delta error as inputs, and only one output named as delta output, these inputs and outputs were communicated between a 32-bit and an 8-bit microcontroller by serial peripheral protocol. Each input and output has five-membership functions. Inference mechanism has 25 rules and as denazification the authors used the Center of Gravity method The brushless motor behavior was studied for two different set points. A comparison between the real plant versus simulations using fuzzy-logic control is presented.