DESIGN AND ANALYSIS OF AN EMBEDDED DIGITAL CONTROLLER FOR BLDC MOTOR

Abstract

This report explains the Design and Analysis of an Embedded Digital Controller for a BLDC motor. This was a system that could be set to regulate the speed and torque of the motor with precision while ensuring efficient operation. The project was approached on several fronts. First, there was the creation of a mathematical model of the BLDC motor in MATLAB. This was done to aid in the design of the control algorithm since it emulated the behavior of the motor. Then, the control algorithm, probably a PI control strategy, was implemented using MPLAB X IDE in a dsPIC33FJ32MC202 microcontroller. The Proteus simulation tool was used to test the functionality of the controller code before integrating it with the hardware. After successful simulation, the Altium Designer was used to design a customized development board. This board, besides hosting the dsPIC33 microcontroller, also contained the driver circuits meant for the BLDC motor and any other sensors that may have been required. Finally, the system was assembled, and physical testing was conducted. The results were evidence of how effective the controller was in exercising precision in motor control. Speed and torque regulation were achieved within specified tolerance limits. The project was a success in the integration of modeling, simulation, and hardware design for the development of an embedded BLDC motor controller. The approach presented is therefore a very valuable roadmap for future projects related to motor control systems.