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Permanent magnet stepping servo motor

A servo motor, permanent magnet step technology, applied in electrical components, electromechanical devices, magnetic circuit rotating parts, etc., can solve the problems of not being widely used, the existence of starting dead points, etc., to achieve good braking characteristics and starting torque. The effect of large and wide speed regulation range

Inactive Publication Date: 2016-05-25
JINHANSHU TECH COMPANY LTD HUNAN CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been widely used because of the startup dead point

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: Two-phase 12-pole outer rotor permanent magnet stepper motor. attached figure 1 , 2 , 3, and 4 respectively give the structure and operation mode of the two-phase 12-pole outer rotor permanent magnet stepper motor. figure 1 Structural diagram of two-phase 12-pole outer rotor permanent magnet stepper motor, including sub-stator 4 and sub-stator 5 made of ferrosilicon sheet, enameled wire coil 6, aluminum stator seat 7, shaft 8 made of stainless steel, bearing 9 and other parts The overall inner stator of the two-phase 12-pole outer rotor permanent magnet stepper motor is formed, and the pole teeth of the two sub-stators are aligned; the rotor provides magnets 2 and 3, which are composed of 2x12 pieces of magnets, and the poles of adjacent magnets On the contrary, it is evenly distributed on the ring surface, there is a gap between each magnet ring, the installation angle difference of the two magnet rings is 15 degrees, and all the gaps in one magnet ring...

Embodiment 2

[0029] Embodiment 2: Two-phase 12-pole inner rotor stepping servo motor. As shown in the figure, it includes sub-stators 3 and 5 made of magnetic materials, two rotors 13, magnetic steel rings 11 and 12 made of permanent magnetic materials, shaft 1 made of non-magnetic materials, end covers 2 and 6, and stator spacers. Plate 4, rotor seat 14, and two bearings 10, brake housing 7, brake 8, and angle sensor 9. There are 12 pole teeth on each stator, the pole teeth are wound with coils, and the winding directions of adjacent pole teeth are opposite. There is a stator partition between the two stators to isolate the two stator magnetic circuits. The two stator teeth are Aligned; 12 pieces of magnetic steel are evenly distributed on each sub-rotor, and the polarity of adjacent magnetic steel is opposite. On the seat, the center plane of the sub-rotor perpendicular to the shaft overlaps with the center plane of the respective stator perpendicular to the shaft; the rotor seat is ins...

Embodiment 3

[0031] Embodiment 3: Two-phase four-pole non-dead point external rotor brushless motor. As shown in the figure, 1 shaft 1 made of non-magnetic material, 2 shaft sleeves 2, a stator seat 3, 2 coils 4 and 10, 2 Hall elements 5, 2 4-pole stators 6 and 9, and a rotor Seat 7, 8 pieces of magnetic steel 8, 1 axle pin 11 constitute; Two rotors are mutually staggered 30-60 degree; Stator is aligned. Due to the misalignment of the dead points, at any time, a sub-motor can start normally, and can change direction during operation. This embodiment is suitable for economical operation, no dead point, quick start, low noise, high energy efficiency, simple manufacture, and low cost. auto parts etc.

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PUM

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Abstract

M double-salient-pole single-phase brushless direct current motors possessing 2n stator poles and a rotor magnetic pole or disc-type motors are installed on a same shaft. Stators and rotors of all the sub-motors form one integral stator and an integral rotor. If starting dead points of at least one or more sub-motors are not overlapped, each sub-motor operates independently so that a m-phase brushless direct current motor without dead point is formed. If each sub-motor successively rotates 360 / 2mn degree respectively, a stepping motor is formed. There are operation modes of 2m and 4m steps, and continuous stepping operation. A stepping angle is a 360 / 2mn degree or a 360 / 4mn degree. The m equals to 2. One angle sensor and one motor brake are added so that the stepping servo motor is formed. A continuous stepping operation mode is used to start the operation till that the motor is operated at a position which makes an assigned step pitch difference is less than one step, and then current sizes and directions of two phases are adjusted so that the rotor is rotated to an assigned position, and power off is performed after braking so that a function of the servo motor is realized.

Description

technical field [0001] The invention relates to a permanent magnet stepping motor, a permanent magnet stepping servo motor and a permanent magnet DC motor without dead point, belonging to the technical field of special motors. Background technique [0002] As an actuator, the stepper motor is one of the key products of mechatronics, and is widely used in various automation control systems. With the development of microelectronics and computer technology, the demand for stepper motors is increasing day by day, and they are used in various national economic fields. According to the structure, stepper motors are mainly divided into three types: reluctance stepper motors, permanent magnet stepper motors and hybrid (excitation) stepper motors. Among them, although the reluctance stepper motor has high precision, it has high power consumption and low efficiency; the traditional permanent magnet stepper motor has low power consumption and small size, but low precision, low operati...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K16/00H02K37/10H02K37/12
Inventor 李建
Owner JINHANSHU TECH COMPANY LTD HUNAN CHINA
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