DSP Based Closed Loop Position Control of BLDC Motor

This paper presents the design of digital controller for a BLDC motor to control the speed and position control using Digital Signal Processor (DSP) TMS320LF 2407 which is used in an Electromechanical Actuator. Brushless D.C motor (BLDC) are one of the motor types rapidly gaining popularity. This motor offer a simple and rugged motor Solution for many variable speed drive application. Rotation of the BLDC is achieved by energizing the stator phases in a sequence, which depends on the rotor position. A rotor position sensor is required to obtain information about the rotor position. Three Hall sensors are used for this purpose. The main objective of the usage of DSP is to commutate the switches of the inverter based on hall sensors signal, and for speed and position control of motor by generating PWM signal of different duty ratio. Index Terms – Brushless DC Motor, DSP