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Recommended Frequency

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chris414

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I'm using PWM to control two wheelchair motors (with an H-bridge linking the two). From your experience, what is a good frequency to use? Obviously if it's a ridiculously slow frequency you might feel the effect of stopping and starting all the time, but other than that does it make much difference?
 
a high one :D I'm afraid i don't understand, to me it would make more sense to use a high frequency. can you post the schematic?
 
I believe that if it is too low, you will hear the PWM signal at the motor.
For RC applications, I believe that around 2 KHz is commonly used. For a brushed motor, the "punch" the motor delivers can be modified by changing the PWM frequency.
 
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