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Motor Magnetic Combination

A technology of electric motors and magnets, applied in electric components, AC motor control, magnetic objects, etc., can solve problems such as incomplete magnetic field compensation

Active Publication Date: 2020-05-15
BECKHOFF AUTOMATION GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reduces the cogging torque, but results in an incomplete compensation of the magnetic field only on the side where the coil moves away

Method used

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  • Motor Magnetic Combination
  • Motor Magnetic Combination
  • Motor Magnetic Combination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] figure 1 A front sectional view of the electric motor 1 is shown. The electric motor 1 is configured as a linear synchronous motor, and includes a stator 30 and a mover 10 movable along the stator 30 . The mover 10 is movable along the stator 30, perpendicular to the figure 1 Section plane of the view shown. The stator 30 includes an extension rail 31 and a stator housing 32 , and the mover 10 includes a U-shaped mover body 12 and three rollers 11 . The rollers 11 bear against the extension rails 31 of the stator 30 so that the mover 1 is guided along the stator 30 via the rollers 11 and the extension rails 31 .

[0052] The electric motor 1 includes a position detection system 40 configured as an inductive position detection system. The position detection system 40 includes an encoder ear 42 disposed on the mover 10 and a receiver board 44 disposed on the stator 30 . The encoder ear 42 and the receiver plate 44 are arranged opposite each other. During the movemen...

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PUM

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Abstract

A magnet device (100) for interacting with a drive coil of an electric motor comprises a first drive magnet (110), a second drive magnet (120), and a compensating magnet (130), which are arranged on the magnet device (100) facing the coil ) side (103) and one side (104) of the magnet device (100) facing the off-line coil. The compensation magnet (130) is arranged between the first driving magnet (110) and the second driving magnet (120). The first drive magnet (110) has a first cross-sectional area (112), the second drive magnet (120) has a second cross-sectional area (122), and the compensation magnet (130) has a third cross-sectional area (132). The width (113) of the first cross-sectional area (112) facing the coil and the width (123) of the second cross-sectional area (122) facing the coil are respectively greater than the width (133) of the third cross-sectional area (132) facing the coil. The width (134) of the third cross-sectional area (132) of the face off-line ring is greater than the width (133) of the third cross-sectional area (132) facing the coil, and the third cross-sectional area (132) undercuts one of the offline rings First and second cross-sectional areas (112, 122) on side (104).

Description

technical field [0001] The invention relates to magnetic devices for electric motors, to movers for electric motors, and to electric motors. Background technique [0002] Electric motors are used especially in automation technology as servo motors, stepper motors, or linear drives. The electric motor can be configured as a rotary motor or a linear motor. In the case of a rotary motor, a rotating mover or rotor is driven by electromagnetic interaction with a stationary stator. In the case of a linear motor, the electromagnetic interaction required for drive occurs between a stator and a mover movable along a path. [0003] In the case of an electric motor of the permanent excitation type, the driving force is generated by the electromagnetic interaction between the motor's driving magnets and the driving coils through which current flows. Depending on the type of construction of the motor, the stator of the motor includes drive coils and the mover includes drive magnets, o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03H02K1/27
CPCH02K41/031H02K1/27H02K11/215H02P25/064H01F6/006H01F6/06H02K1/18H02P6/08
Inventor 乌瑟·普鲁斯迈尔
Owner BECKHOFF AUTOMATION GMBH