Help with CIM motor locking system?

[MaGiC_PiKaChU]

they could be using sensors to read the arm's angle. You just have to apply a small portion of the available power using motor controllers (Talons, victors, sparks, etc.) to overcome gravity and keep it at the right angle.

I recommend you read about sensors and motion control for your personal knowledge

[zinthorne]

I believe the dart actuators are a worm drive system, and it's is very difficult or impossible to back drive a worm drive.

[Chak]

Originally Posted by zinthorne

I believe the dart actuators are a worm drive system, and it's is very difficult or impossible to back drive a worm drive.

Actually, the DART actuators use a ACME lead screw. Nevertheless, it's very difficult or impossible to backdrive a lead screw. On the other hand, efficiency goes down (Andymark says it's 52%).