motor feedback

Discussion in 'The Projects Forum' started by engkeat, Feb 27, 2009.

  1. engkeat

    Thread Starter Member

    Aug 18, 2008
    11
    0
    i m using an incremental encoder to feedback the speed of a dc motor. i am concern about the frequency of the pulse generate from encoder as i need a find a set point (desired frequency/speed) , the motor is used to lift up a load at a constant speed. during the lifting, torque required is changing, meaning voltage required is changing as well..so i need to control the voltage supplied to motor through the feedback pulses, i m using PIC as the controller. my question is that... can PIC detect the continuous changing pulse from the incremental encoder??? o do i need any converter?
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    You should consider using pulse-width modulation control of the speed of your motor. You would use your PIC to change the duty-cycle of the control signal to your motor driver based on the input from your encoder.

    hgmjr
     
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