Brushless DC motor control using a digital signal controller

This paper presents the design and implementation of a DSP-based low cost Brushless DC (BLDC) motor controller that is comparable to other more cost effective motors. This objective is met by simple design and careful component selection. To provide further cost effectiveness and ease of design a high performance 16-bit digital signal controller (DSC) is used. Sensorless control using the back EMF zero crossing technique is utilized, eliminating the need for hall sensors thus further reducing cost and increasing reliability. The speed is varied using the pulse width modulation (PWM) technique. To verify the proposed method a prototype motor controller is constructed and tested.

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