关键词: 无刷直流电动机, 电机控制, 温度特性, 过载性能

Abstract:

Aiming at the special performance requirements of a tracked omnidirectional platform, a kind of motor control method based on the temperature characteristic curve of motor under a certain overload ratio was proposed to further improve the platform cross-country ability. The relationship between current, time and motor temperature was obtained by theoretical analysis, and the different overload times of motor were measured by experiment. The temperature characteristic of the motor and the temperature rise curve of the motor was fitted. The correctness of the method was verified through many experiments. By controlling the maximum working time of the motor under a certain overload condition, the overload ability of the motor is improved, and the cross-country ability is greatly improved.

Key words: brushless DC motor, motor control, temperature characteristic, overload performance