- #1
robs314
- 16
- 0
Hello
I am building a generator dynamometer to test motors and using the motor output to give me the torque produced. I am happy with the linear relationship for torque, but i will need to calibrate this output.
I guess I could try using a torque arm with a load cell. This would be fine for measuring the braking torque, but will this calibration still hold true for dynamic operation too?
Another option is a torque sensor - does anyone know how expensive these things are? I have a feeling they are costly, so i was wondering how easy it would be to make one.
There's one method which uses a strain gauge attached to the shaft, and the flex in the shaft is correlated to a torque output, sent through a slipring around the shaft. What I want to know basically is, is it a project in itself to make one?
Thanks
I am building a generator dynamometer to test motors and using the motor output to give me the torque produced. I am happy with the linear relationship for torque, but i will need to calibrate this output.
I guess I could try using a torque arm with a load cell. This would be fine for measuring the braking torque, but will this calibration still hold true for dynamic operation too?
Another option is a torque sensor - does anyone know how expensive these things are? I have a feeling they are costly, so i was wondering how easy it would be to make one.
There's one method which uses a strain gauge attached to the shaft, and the flex in the shaft is correlated to a torque output, sent through a slipring around the shaft. What I want to know basically is, is it a project in itself to make one?
Thanks