I am currently trying to use a torque sensor to measure the disturbance on a small dc motor, how can I calibrate the sensor using probably a shunt resistor?
Ask Prof. Etim Ubong
He is expert in engines. I am just a statistician.. I believe, you can make some experiments with different calibrations, and use it to find out which one gives te best desired results.
Hi Anthony,
HBM Germany has excellent material (literature) on their website for torque measurements and calibration setups. That will give you the best guideline in your work.
Best Luck!
Thank you Boyan and Prasanna I will surely give these a trial. cheers
For torque ripple measurement we used a system with a pully driven by the motor, with a slipping belt over the pulley. With a 1-D force sensor you can measure the force in the belt which is proportional to the torque of the motor. This is cheap and easy and good enough for qualitative measurements.
Can you explain what 'disturbance' you want to measure?
Victor,
I am trying to use a reaction torque sensor to measure the friction torque between two discs with relative rotary velocity. one is driven by the dc motor(small) and the other is held stationary.
In that case you could use our method on the rotating disc (without the stationary disc), and tighten the belt so far that you get constant forces on the force sensor. You can then callibrate the current. Do bear in mind that a brushed DC motor will have nasty current spikes, and not all current will produce torque. Personally I wouldn't think you'd be able to get accurate measurements....
http://www.hbm.com/nl/menu/tips-tricks/torque-measurement/methods/
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