Iqs controls torque just like the armature current does in the DC motor. Field-oriented control allows precise and responsive speed control when the load changes ... This last (frequently called ...

En route to getting the off-the-peg DC-51 motor speed controller to better suit my small milling machine, I had a go at working out what the circuit is. Approx circuit of DC-51 motor speed controller ...

and works a lot like any other brushless DC motor with an ESC (electronic speed control) on something like a drone or other UAV. But while the unit can be given throttle or speed control signals ...