What are the control methods of brushless DC geared motors?

The brushless DC motor is developed on the basis of the brushed DC motor. It has the advantages of stepless speed regulation, wide speed regulation range, strong overload capacity, good linearity, long life, small size, light weight and large output. It solves a series of problems existing in brushed motors and is widely used in various fields such as industrial equipment, instrumentation, household appliances, robots, and medical equipment. Since brushless motors do not have brushes for automatic commutation, an electronic commutator is required for commutation. The brushless DC motor driver realizes the function of this electronic commutator.

The brushless DC geared motor refers to the integration of the reducer and the brushless DC motor (motor). It is usually provided by a professional reducer manufacturer, which is integrated and assembled with the motor as a complete set.

According to the actual needs of customer products, it can be matched with micro reducer, worm gear reducer and other products. Provide customers with a complete set of brushless DC geared motor solutions. The products have the characteristics of low noise, small size, high efficiency and low energy consumption. Among them, what are the control methods of brushless DC gear motors? Here is a brief introduction:

1. Speed control

The speed regulation of the DC brushless geared motor can be realized by changing the magnitude of the voltage. There are two commonly used methods: one is to keep the on-time of each phase unchanged. The speed regulation is realized by changing the magnitude of the voltage amplitude applied to the coil when each phase is turned on.

2. Microcomputer control

The brushless DC gear motor is produced and developed with the digital control technology. Therefore, the digital control of the brushless DC motor with a microcomputer is the main control method.

3. Forward and reverse control

Because the DC brushless gear motor is very different from the DC motor in structure. Therefore, it is not possible to change the steering by changing the power supply, but only by changing the relative relationship between the stator winding magnetic potential and the rotor magnetic field to change the direction of rotation. The control method is to use two driving signals that are different in phase to control the conduction of the corresponding windings, so as to realize forward and reverse rotation. Electronic circuits can also be used to perform certain logic processing to obtain a forward rotation signal and a reverse rotation signal.