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.

 

Depends upon the type of actuator. What kind are you planning on using?

 

DC 12V or 24V linear actuator

 

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.

 

What aspect of the actuator do you want to control with PWM?

The reason why I want to use a PWM is to control the motor speed only.

 

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