DC MOTOR CONTROL

Discussion in 'Homework Help' started by Nirvana, May 29, 2005.

  1. Nirvana

    Thread Starter Well-Known Member

    Jan 18, 2005
    58
    0
    Hi there I have been doing DC motor controll using delays and this is what I dont understand.


    The teacher said that by using delays the motor will change speed.
    We are using DC pulses, now is the pulse width varying or is it the time taken between each pulse which is varying.
    If anyone can help me very quickly i will be truly gratefull
    Thanks
     
  2. pebe

    AAC Fanatic!

    Oct 11, 2004
    628
    3
    The usual way is to vary the pulse width while keeping the pulse period constant. But keeping the pulse width constant and varying the time between pulses, will also work.

    The main thing is that the ratio of ON times to OFF times (pulse and no-pulse) is what determines the motor speed.
     
  3. David Bridgen

    Senior Member

    Feb 10, 2005
    278
    0
    Deleted.
     
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