PWM control of a 3 phase linear motor

Help & Support Robot Parts
1

I’m trying to find a cheap controller for a linear motor project. Motor only has to move a table 1 inch. Manufacturer want to sell me a $2,000 controller. I think it can be done with a simple controller. Anyone have any suggestions?

Thanks

2

What is the force required and how would you want to control it?
robotshop.com/en/actuators.html
Most of the linear actuators we offer start at 2" stroke.

3

Hi Coleman,

My name is Pat.

My need is to move a table about 1" with a force of about 20 Ft/Lbs of force. Right now I have a Aerotech 3 phase linear motor but have not had much success to get to run. I developed some software to act as a PWM but not much luck. Do you have any thing that might work for the aerotech or do you have a motor and controller? I’m trying to move the table at a rate of 1/2" every 2 sec.

Thanks

4

So a linear actuator which can move 1/4" per second and provide at least 20 lbs of force? Again, very few actuators have a stroke of 1" (it’s simply too short). Consider:

robotshop.com/en/2-stroke-fi … witch.html
robotshop.com/en/2-stroke-33 … uator.html
robotshop.com/en/2-stroke-22 … uator.html (might be a bit too close to 20 lbs)

The controller would be standard DC. If you want position control, you’d need an actuator with built-in potentiometer, at which point you could use the LAC:
robotshop.com/en/firgelli-te … board.html

Don’t know much about Aerotech unfortunately.