Outer rotor direct driving type permanent magnet synchronous torque servo motor

Abstract

The invention relates to an outer rotor direct drive type permanent magnet synchronous moment servo motor, which comprises a stator and a rotor, wherein the stator comprises a motor shaft, a stator iron core and a stator winding, the rotor comprises a rotor iron core, a permanent magnet body, a front end cover and a rear end cover, the inner surface of the rotor iron core is evenly distributed with projecting rotor tooth, the permanent magnet body is fixed between adjacent rotor tooth, the inner portion of the stator iron core is equipped with an axial via hole, and a hollow copper pipe is put in the axial via hole. The front end cover and the rear end cover are evenly equipped with radial strip vents or strip vents with an inclination angle. The outer rotor direct drive type permanent magnet synchronous moment servo motor can achieve the closed loop control of a position sensor or the vector open-loop control of a without position sensor, has heat dissipation function, compact structure, simple process, big output torque, low rotating speed, reliable operation, high efficiency and saves energy, and is particularly suitable for the direct driving of electric vehicles and mechanical equipment.

Description

technical field [0001] The invention relates to the technical field of permanent magnet motors, in particular to an outer rotor direct-drive permanent magnet synchronous torque servo motor, which is suitable for direct driving of electric vehicles and low-speed mechanical equipment. Background technique [0002] The AC motor has a high synchronous speed and cannot be used directly in the field of low-speed production machinery. The method of increasing the deceleration mechanism introduces problems such as complex structure, reduced efficiency, increased noise, and frequent maintenance. To this end, the researchers proposed a mechatronics product that can directly drive the load—direct drive torque servo motor. The direct drive torque servo motor has the advantages of large output torque, low speed, compact structure, reliable operation, high efficiency and energy saving, so it can partially replace the matching application of "motor + reducer", which reduces the volume and...

AI Technical Summary

Problems solved by technology

Both outer rotor designs follow the traditional surface-mounted magnetic circuit structure, and both adopt position sensor servo control. There is a certain space requirement for the installation of position sensor components, which increases the cost of the motor.

Due to the small size, the motor does not have a special ventilation and cooling structure, and it is difficult to avoid the temperature rise of the motor or the local temperature rise is too high in the case of long-term continuous operation

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