Hello to all, this is my first posting to this newsgroup.
I need some help/advice with linear motors controls.
I have a couple servo position controllers, left over from several projects I've worked on. The position controllers were used in applications driving hydraulic actuators, +/- 20ma with a null current from 0ma to 1ma.
I would like to setup a training stand for configuring the servo position controller boards. I don't think I can setup a hydraulic actuator mostly because of price and the requirement of a hydraulic pump and can also be messy. A pneumatic actuator will work, I've tried and succeeded, but it is also pricy and compressor is noisy. My only option, I think, is to use a linear motor. Please see attached link:
I've been looking for 5 to 10inch stroke length with a 1 to 3 second travel time.
The only problem is that the linear motors accept a voltage ON and voltage OFF to move. Typically 12VDC to 24VDC at 10amps. This is a problem for me because I have a +/-200ma capable servo position controller and not a 12vdc at 9amps to drive.
Question:
- Are there any linear motors out there that accept a 4-20ma or
- Are there any conditioning boards for converting a current input to the continuous required DC ON and OFF signals to finely position the linear actuator?
- Are there better options other than using a linear motor?
Any input is appreciated.
Thanks