Groove-type rare earth permanent magnet brushless motor

Abstract

The invention discloses a groove-type rare earth permanent magnet brushless motor, and relates to the technical field of brushless motors, in particular to a groove-type rare earth permanent magnet brushless motor which comprises a motor shell. A right side bearing support is fixedly installed on the right side in the motor shell, a ball bearing is fixedly installed in the middle of the right sidebearing support in a sleeving mode, and the middle of the ball bearing is fixedly sleeved with a driving shaft. According to the groove-type rare earth permanent magnet brushless motor, a micro controller controls a plurality of micro electric telescopic rods to drive a magnet rotor to move, and the effective contact length of the magnet rotor, a stator and a winding wire is adjusted, so that therotating speed of the motor is adjusted, the problem that the motor is easily damaged due to frequent adjustment of current in the prior art is solved, the service life of the motor is improved, andmeanwhile, through mutual cooperation of a limiting clamping ring and a limiting bearing, the miniature electric telescopic rods are limited, and the stability of the miniature electric telescopic rods driven by the magnet rotor to rotate is guaranteed.

Description

technical field [0001] The invention relates to the technical field of brushless motors, in particular to a slot-type rare earth permanent magnet brushless motor. Background technique [0002] A permanent magnet brushless motor is a permanent magnet motor that is commutated or current controlled by an electronic circuit. There are two types of permanent magnet brushless motors: sine wave drive and square wave drive; the driving current is a rectangular wave is usually called a permanent magnet brushless DC motor, and the driving current is a sine wave is usually called a permanent magnet AC servo motor. Induction types can be divided into sensor motors and positive sensor motors. Compared with electric excitation motors, permanent magnet motors, especially rare earth permanent magnet motors, have simple structure, reliable operation, small size, light weight, low loss, and high efficiency; The shape and size can be flexible and various, so the application range is extremely...

AI Technical Summary

Problems solved by technology

[0003] When the motor is working, due to changes in the working environment and work needs, the motor speed needs to be changed frequently. The current permanent magnet brushless motor usually controls the motor speed through the controller to control the current. Frequent changes in the motor current by the controller are likely to cause damage to the motor. , and at present, when the motor is turned on, a large current will have a greater impact on the motor, which increases the probability of motor damage, and at present, when the motor is stopped, it is usually directly controlled by the controller to power off the motor, and the rotor is directly powered off due to inertia It will still rotate for a long time, and direct power failure will cause great damage to the motor. In addition, the existing motor usually does not have a monitoring device. When the motor rotates too fast, an alarm cannot be issued in time, which has certain potential safety hazards. A slot type rare earth permanent magnet brushless motor to solve the problems raised above

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