What Are The Control Methods For DC Motors?

Lifting up the DC motor, we have to say its control method, it can be said that it is the core of the whole product. Nowadays, its control technology has made great progress, including digital control and position sensorless BLDC control. The method, then see the detailed introduction below.

1, digital control

The digital control system is based on a microprocessor and can realize high complexity and high precision control that was unimaginable in the previous continuous control. With the advent of microelectronics technology, microprocessors and computing speeds, as well as the development of computer software, the automatic control system has been over-represented, with digital processing as the core and high-speed digital processing as the core digital control system. Due to the small size and convenient implementation of the digital speed control system, not only general PID control, complex vector control, nonlinear robust control, fuzzy control and other methods can be realized.

2, no position sensor BLDC control

Since the position is removed on the DC motor body, all the hardware is placed in the electronic switch circuit to reduce the size and cost of the DC motor. Since the conduction and commutation time of each phase winding can no longer depend on the position sensor signal, a magnetic pole position detecting circuit is added in the control circuit, and it is generally difficult to accurately determine the rotor position signal when the motor is stopped or the rotational speed is low. Detected, therefore, the position sensor BLDC generally requires a special starting circuit, the other links are the same as the BLDC with position sensor.

The above introduces the control method of DC motor. I think you have gained a lot of knowledge from Xiaobian, and you can continue to pay attention to us if you want to know more.