Actuator PWM

Discussion in 'General Electronics Chat' started by Dritech, Jul 7, 2013.

  1. Dritech

    Thread Starter Well-Known Member

    Sep 21, 2011
    756
    5
    Hi,

    I am planning to build a Robotic arm using actuators. After doing some research I found out that you cannot use PWM with actuators. Is this true? and if so, why is that?

    Thanks in advance.
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,014
    3,234
    Depends upon the type of actuator. What kind are you planning on using?
     
  3. Dritech

    Thread Starter Well-Known Member

    Sep 21, 2011
    756
    5
    DC 12V or 24V linear actuator
     
  4. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    What aspect of the actuator do you want to control with PWM? Speed can be controlled by PWM. Position will depend upon the type of feedback available from the actuator, if any, and a method of using it to compare to the PWM position signal. A secondary feedback device may be required.
     
  5. Dritech

    Thread Starter Well-Known Member

    Sep 21, 2011
    756
    5
    The reason why I want to use a PWM is to control the motor speed only.
     
  6. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    I that case, PWM is a good way to control the actuator. H bridge with PWM will give you both speed and direction control.
     
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