MATLAB-Based Closed-Loop Control of Brushless DC Motors

This article describes the implementation of brushless DC motor control using MATLAB with a closed-loop control approach. The content thoroughly explains the principles of closed-loop control and the functionality of each component within the control system. To enhance understanding, the article covers fundamental motor control concepts including the relationship between motor speed, torque, and current, along with detailed explanations of PID controller operation in motor control systems. The implementation typically involves using MATLAB's Simulink environment with key blocks such as PID Controller, PWM Generator, and motor modeling components. For practical application, the guide includes real-world case studies demonstrating how to implement speed regulation using feedback sensors and torque control algorithms. The control algorithm implementation often involves coding proportional, integral, and derivative gains while monitoring hall sensor inputs for precise rotor position detection. Finally, the article provides practical application scenarios to help readers better understand real-world implementation of brushless DC motor control systems, including code structure for implementing commutation logic and closed-loop feedback mechanisms.