DC Motor control PWM

Asked Jun 14 '19 at 08:44

Active Jun 14 '19 at 20:19

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I need to vary the speed of a DC geared motor using software (Raspberry Pi SW GPIO).

The motor is 3 V DC geared micro motor @150 rpm. At 3 V full 'speed' the motor is very powerful for my needs having sufficient torque. However when I change the duty cycle to decrease the speed, then the torque is also reduced (presumably as duty cycle halves voltage).

Is there any way to maintain torque via software?
If not, then any idea how the Anki Cozmo/Vector robots do this (see The Best Cozmo Commercials by Anki)?

edited Jun 14 '19 at 20:19

Greenonline

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asked Jun 14 '19 at 08:44

user176326

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https://electronics.stackexchange.com/questions/73463/how-to-decrease-the-motor-speed-without-losing-the-maximum-torque – Cory Thorbeck Jun 14 '19 at 08:56
Not a duplicate – user176326 Jun 14 '19 at 16:31

DC Motor control PWM

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