Performance differences between brushed rotor and brushless motors and the difference in speed control methods

Brushed motor and brushless motor, has been the topic of discussion, some friends say brush motor is good, some friends say brushless motor is good, opinions vary, in fact, whether it is the traditional brushed motor, or later brushless motor, have their own advantages, so how is the difference in performance between brushed motor and brushless motor? What is the difference in speed regulation? Take a look below!

Brushed motor and brushless motor performance differences:

1. Brushed motor structure is relatively simple, along the long time, mature technology; fast response speed, starting torque, running up a relatively smooth, starting and braking performance is better, the control accuracy is also good, the key is the cost is not high, if the requirements are not high, you can use the brushed motor can be. However, brushed motors need to replace brushes frequently, which is also more troublesome, and it is not very suitable in some demanding places, and it is easy to produce sparks and interference.

2. Brushless motor structure is relatively more complex, running more smoothly, the use of electronic commutation, interference is small, long life, low maintenance costs, commonly used in fine-tuning scenes.

Brushed motor and brushless motor speed regulation:

1. Brushed motor mainly regulates the power supply voltage, the regulated voltage and current are converted by commutator brushes to change the strength of electrode and magnetic field, so as to change the speed of electrode.

2. Brushless motor speed regulation, the power supply is unchanged, through the electronic commutation, change the ESC control signal, after the controller, can adjust the rotational speed, also called frequency conversion speed regulation.

The above is the difference between the performance of brushed motor and brushless motor, as well as the difference in speed regulation, master these basic knowledge, in order to better understand the difference between the two.

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