Thank you fuzzyj for your response. If I send a constant voltage, how would i know what the corresponding torque value is. The relationship between voltage and torque includes angular velocity. Thus constant voltage would not mean constant torque. And according to your response, i would not be able to read the angular velocity. Basically, i am trying to send a torque value (rather than a voltage value) and make the motor rotate at it.
Thank you for your time."