Direct current brushless motor based on magnetic coupling resonance and control method thereof

Abstract

The invention discloses a direct current brushless motor based on magnetic coupling resonance and a control method thereof.The direct current brushless motor comprises a shell, a stator and a rotor, and a wireless energy supply module and an input current direction detection circuit are arranged in the shell; the rotor is provided with a wireless receiving module, an input current direction induction circuit, a rotation position detection module, a rotor armature driving module and a rotor armature, wherein the wireless energy supply module and the wireless receiving module are arranged adjacently, the input current direction detection circuit and the input current direction induction circuit are adjacently arranged to achieve wireless transmission of input current direction detection signals, and the energy output end of the wireless receiving module is connected with a rotor armature through the rotor armature driving module. And the input current direction induction circuit and the rotation position detection module are respectively connected with the detection signal input end of the rotor armature driving module. The motor has the advantages of stable operation, good starting/braking effect, simple driving, high speed, low operation noise and long service life.

Description

technical field [0001] The invention relates to a DC brushless motor, in particular to a DC brushless motor based on magnetic coupling resonance and a control method thereof. Background technique [0002] With the rapid development of the economy, science and technology are also constantly improving. Motors, as an important part of the development of science and technology, play a role that cannot be underestimated in various fields. The starting characteristics and speed regulation characteristics of traditional DC motors are very good. Although the ingenious mechanical commutation of brushes is used to solve the problem of current commutation, the sliding contact between brushes and commutators is easy. Cause mechanical wear, greatly reduce the service life and reliability of the motor. The existing brushless DC motor replaces the mechanical commutation with electronic commutation, which eliminates the wear caused by the brushes and improves the efficiency, but because of...

AI Technical Summary

Problems solved by technology

The starting characteristics and speed regulation characteristics of traditional DC motors are very good. Although the ingenious mechanical commutation of brushes is used to solve the problem of current commutation, the sliding contact between brushes and commutators is easy. Cause mechanical wear, greatly reducing the service life and reliability of the motor

The existing brushless DC motor replaces the mechanical commutation with electronic commutation, which eliminates the wear caused by the brushes and improves the efficiency, but because of the need for constant positioning, it increases the difficulty of control and the complexity of the structure. The requirements of the controller are also high, so the response speed of the existing brushless DC motor is not as good as that of the traditional DC motor

To sum up, due to the reduction of the service life and efficiency of the motor due to the influence of the brushes in the existing traditional DC motor, although the brushless DC motor replaces the brush, it also sacrifices its simple control, so that the DC motor cannot both have their own advantages

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