BLDC Motor Control Algorithm for Low-Cost Industrial Applications

Electrical motors are an integral part of industrial plants with no less than 5 billion motors built word wide every year. The demand for low-cost brushless dc (BLDC) motors have increased in industrial applications. This paper presents a BLDC motor control algorithm for low-cost motor drive applications using general purpose microcontrollers which have only one on-chip timer. The papere describes how to realize pulse width modulation (PWM) signals with general input/output (I/O) ports to control a three-phase permanent magnet brushless dc motor using the timer interrupt on MSP430F1232.