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DC motor control progressive start and stop

  1. Jul 27, 2008 #1
    hey Everybody!!.....
    I`m stck with the Control of a DC Motor....I need To Control a DC motor in this way, it Must Start real slowly, and then progressively but slowly should continue to reach its maximun velocity, it could take up to 1 min to reach it; then remain for a set time stable at its final velocity and after the time pass then start to slow down in the same opposite slowly way as the start........how would i do that??
  2. jcsd
  3. Jul 28, 2008 #2


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    Staff: Mentor

    You need to use pulse-width modulation (PWM) on the DC to the motor. You vary the pulse width from narrow to wide to full-on to go from slow to faster to full speed.

    See PWM for Power Delivery here: http://en.wikipedia.org/wiki/Pulse-width_modulation#Power_delivery
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