Controlling torque of a DC motor

Hi all, im implementing torque control of a DC motor by varying the PWM pulse into my motor driver. So, am i right to say that the higher the pulse value the higher the torque?

So, am i right to say that the higher the pulse value the higher the torque?

Not really. Higher the duty cycle of a PWM, the motor will be ON most of the time, lower the duty cycle, the motor will seem less ON, but more OFF.

You need a way to monitor the RPM of the motor, use the signal as a feedback, to control the speed of the motor.

dnth: Hi all, im implementing torque control of a DC motor by varying the PWM pulse into my motor driver. So, am i right to say that the higher the pulse value the higher the torque?

In general, yes, although determining the relationship may be non-trivial. Is this a rotating motor, or a stationary motor as you referred to on another thread? Predicting the torque of a stalled motor is a very different problem to a spinning motor.

Torque and speed are 2 different animals. A feedback loop will allow constant RPM. Even with a constant torque motor the RPM will vary depending on load.