直流无刷电机驱动的PWM频率

以下来源：Understanding the effect of PWM when controlling a brushless dc motorhttps://www.controleng.com/articles/understanding-the-effect-of-pwm-when-controlling-a-brushless-dc-motor/
Brushless dc motors have an electrical time constant τ of a few hundred microseconds. The current will therefore have the time to react during each PWM cycle (see Figure 11). However, the mechanical time constant is in the range of a few milliseconds, so there is a factor of 10 between the mechanical and the electrical time constant. Therefore, the rotor of the motor itself will not have enough time to react when the voltage is switched at typical PWM frequencies. Low PWM frequencies of a few thousand Hertz may generate rotor vibrations and audible noise. It is advisable to go above the audible spectrum, meaning at least above 20 kHz.

以下来源：Smooth PWM current control of a Maxon DC Motor
https://www.electro-tech-online.com/threads/smooth-pwm-current-control-of-a-maxon-dc-motor.110965/
The electrical time constant of your motor is about 375 microseconds. With that time constant I would use PWM frequencies above 30 kHz. Maybe even 40…60 kHz if you can get enough resolution from your microcontroller.