I have in my mind a concept for a piece of theatrical scenery which needs to fly up and down about 30', and be positioned repeatably to the resolution of about 1".
The piece weighs less than 30 pounds, so 1 to 2hp AC servomotor with a single phase 120v power/speed control would be perfect. (I'd settle for single phase 240, but would really prefer to avoid three phase power.) Ideally, it has a few ways to specifiy commands:
1) Go to a position at a certain speed. 2) Spool at a certain speed.I could build this pretty easy with a DC motor, H-Bridge, and optical encoder. But for once, I'd prefer to spend the money on an off-the-shelf solution.
So: Anyone have a line on an AC servomotor and drive that would be suitable, around (or under!) $1,000?
PART 2:
Anyone have a good source for slip rings? I need to send 12vdc (and maybe video, if I have my way) down the winch, too.