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Torque of what? A tiny model motor, a shop tool motor, an automobile engine? Please explain what you are trying to do.
As a general principle you would mount the torque generating device in a manner that will allow it to rotate freely (albeit at a small angle), balance it so that gravity will not impose a torque as the device rotates through small angles, provide a lever arm of convenient length for the torque involved to restrain rotation of the device, provide a means of loading the output shaft of the device (a load or friction brake), and provide a force gauge that will be the only thing restraining rotation of the device acting at a known distance from the axis of rotation.
Apply power to the device, increase the load on the output shaft, and measure the speed of rotation of the device and the force on the scale along with whatever other parameters are appropriate such as voltage and current. Repeat at however many different speeds are appropriate.
Torque for those specific operating conditions is the product of the lever arm length and the force on the scale.
You can also measure torque with the device generating the torque rigidly mounted and with the lever arm on the loading device.
Torque of what? A tiny model motor, a shop tool motor, an automobile engine? Please explain what you are trying to do.
As a general principle you would mount the torque generating device in a manner that will allow it to rotate freely (albeit at a small angle), balance it so that gravity will not impose a torque as the device rotates through small angles, provide a lever arm of convenient length for the torque involved to restrain rotation of the device, provide a means of loading the output shaft of the device (a load or friction brake), and provide a force gauge that will be the only thing restraining rotation of the device acting at a known distance from the axis of rotation.
Apply power to the device, increase the load on the output shaft, and measure the speed of rotation of the device and the force on the scale along with whatever other parameters are appropriate such as voltage and current. Repeat at however many different speeds are appropriate.
Torque for those specific operating conditions is the product of the lever arm length and the force on the scale.
You can also measure torque with the device generating the torque rigidly mounted and with the lever arm on the loading device.
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