DC Brushless Motor Control System Based on COMSOL and Simulink

The electromagnetic, temperature rise, stress, and strain characteristics of motors are nonlinear and coupled with each other, and cannot be replaced by simple mathematical models. The physical characteristics of these motors themselves will affect the overall performance of the control system, especially the electromagnetic characteristics of the motors. The finite element model has parameterization function. Taking DC brushless motor as an example, it can parameterize the input parameters of stator slot number, rotor pole number, winding connection method, current value, and main size on the model, automatically update the model, and can be applied to different motor structures and size parameters. Develop an interface configuration method for COMSOL and Simulink, and implement a joint simulation model of finite element motion control system for motor systems based on COMSOL and Simulink. This system can add dynamic loads on the motor shaft, and study the results including transient and steady-state air gap flux density, armature winding flux, electromagnetic torque, winding voltage, current, etc.