DC motor speed regulation refers to the motor's artificially changing the speed of the motor under certain load conditions. DC motor speed regulation performance is good.The so-called "speed regulation performance" refers to the motor's artificially changing the speed of the motor under certain load conditions. The DC motor can achieve uniform and smooth stepless speed regulation under heavy load conditions.
and the speed regulation range is wide. In order to make the armature receive electromagnetic torque in a constant direction, the key is to change the direction of the current flowing through the coil in time when the coil side is under the magnetic poles of different polarities, that is, the so-called "commutation". To this end, a device called a commutator must be added.
The commutator and the brush can ensure that the current in each of the lower coil sides is always in one direction, so that the motor can continuously rotate the weak magnetic speed regulation and change the excitation current. The boost will slow down. When the armature voltage is changed, the boosting speed is increased, and the voltage drop is slowed down. This is used a lot. In short, changing the voltage requires a voltage regulator, which can be a string resistor, or a DC regulator.