|
I've used a setup which is exactly what you need, but it was a spendy system and would require running wires outside the environment.
We bonded strain gauges to a ratchet extension, calibrated the output and used it to control a rotary hydraulic motor. This was used to put a torque on an aircraft component that we suspected of premature fatigue failure, so it was cycled at about 30hz for days on end and held within something like 2% accuracy. Everything worked as designed except we had to weld the socket to the extension and use pins to attach it to the motor so there was no "slop."
__________________
.
|