I am given a small robot track vehicle, which uses a DC motor to power the left tracked wheel and another DC motor to power the right tracked wheel. I am using an optical wheel encoder to measure the angular velocity of the motor. Now I want to determine the precision of the optical wheel encoder. To do so, I need to know the EXACT angular velocity of the DC motor. Can somebody tell me how to determine the exact angular velocity?
The datasheet of the motor does not contain any electrical or torque constant. I am only given the no load speed, no load current. I get to choose what voltage I apply to the DC motor myself (in the code). Can I calculate the angular velocity the motor should have based on the voltage that I apply? Or do you know an easier or better way?
I am using this motor: TFK280SC-21138-45