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Optimal Design Method for Thrust Fluctuation of Moving Magnet Primary Discontinuous Segmented Linear Motor

A segmented straight line, optimized design technology, applied in the direction of magnetic circuit shape/style/structure, electromechanical devices, electrical components, etc., can solve the problems of reducing the accuracy and reliability of the control system, and achieve improved dynamic performance, accuracy and reliability Sex, the effect of weakening the thrust fluctuation

Active Publication Date: 2022-08-02
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that a large thrust fluctuation will be generated in the inter-segment transition stage of the discontinuous segmented linear motor, thus reducing the accuracy and reliability of the control system. Optimal Design Method for Thrust Fluctuation of Segmental Linear Motor

Method used

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  • Optimal Design Method for Thrust Fluctuation of Moving Magnet Primary Discontinuous Segmented Linear Motor
  • Optimal Design Method for Thrust Fluctuation of Moving Magnet Primary Discontinuous Segmented Linear Motor
  • Optimal Design Method for Thrust Fluctuation of Moving Magnet Primary Discontinuous Segmented Linear Motor

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specific Embodiment approach 1

[0018] Embodiment 1: Combining Figure 1 to Figure 3 This embodiment will be described. The thrust fluctuation optimization design method of the moving magnet primary discontinuous segmented linear motor described in this embodiment is optimized for the topology structure of the moving magnet primary discontinuous segmented linear motor. ;

[0019] The topological structure of the moving magnet primary discontinuous segmented linear motor includes a plurality of stators and movers; the plurality of stators are arranged at equal intervals, and the movers are vertically arranged directly above the plurality of stators and extend along the Movement in the direction of the arrangement of multiple stators;

[0020] The structures of the plurality of stators are the same, and the stator includes a primary iron yoke 3 and a plurality of primary windings 4; the plurality of primary windings 4 constitute a primary winding unit and are arranged just above the primary iron yoke 3;

[0...

specific Embodiment approach 2

[0029] Specific embodiment 2: This embodiment further defines the thrust fluctuation optimization design method of the moving magnet primary discontinuous segmented linear motor described in the specific embodiment 1. In this embodiment, the effective length of the secondary iron yoke 1 is further limited. The specific method of optimization is:

[0030] Control the secondary iron yoke 1 to satisfy:

[0031] l 1 =ml 2

[0032] where, l 1 is the effective length of the secondary iron yoke 1, m is an integer greater than 1, l 2 is the effective length of the primary iron yoke 3 .

[0033] In this embodiment, the effective length of the secondary iron yoke 1 is controlled to be an integer multiple of the effective length of the primary iron yoke 3; the effective length of the secondary iron yoke 1 is far greater than the effective length of the primary iron yoke 3 to ensure the consistency of the phase sequence .

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment further defines the thrust fluctuation optimization design method of the moving magnet primary discontinuous segmented linear motor described in Embodiment 2. In this embodiment, the installation interval of the primary iron yoke 3 is optimized. The specific method is:

[0035] Control the spacing between the two primary winding units to satisfy:

[0036] l=l 1

[0037] Among them, l is the distance between two primary winding units;

[0038] The distance l between the two primary winding units satisfies:

[0039] l=k(l 2 +l 3 )

[0040] where, l 3 is the installation interval of the primary iron yoke 3, and k is an integer greater than 1.

[0041] In this embodiment, the distance between the two primary winding units is controlled to be equal to the effective length of the secondary iron yoke 1, and the distance l between the two primary winding units is equal to the effective length l of the primary iron yoke 3 2 Installation int...

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Abstract

A method for optimizing thrust fluctuation of a moving-magnet primary discontinuous segmented linear motor relates to the field of electromagnetic and mechanical structure design and manufacture of linear motors. In order to solve the problem of huge thrust fluctuations during the transition between segments of discontinuous segmented linear motors , thereby reducing the accuracy and reliability of the control system. The invention optimizes the effective length of the secondary iron yoke, optimizes the installation interval of the primary iron yoke, optimizes the installation interval of the permanent magnet, and optimizes the installation interval of the primary winding, so that the end effect of the two ends of the secondary iron yoke is achieved. Equal; used to suppress magnetic field distortion by optimizing the structure of the permanent magnet and optimizing the shape of the primary iron yoke. The beneficial effect is to improve the precision and reliability of the control system.

Description

technical field [0001] The invention relates to the field of electromagnetic and mechanical structure design and manufacture of linear motors. Background technique [0002] The primary of the discontinuous segmented linear motor is composed of multiple independent stator segments that are electrically discontinuous. The discontinuous segmented linear motor uses a small number of primary windings in the same motion stroke due to the discontinuity of its stator windings. The overall manufacturing cost of the motor can be widely used in the field of long-stroke linear transmission; but at the same time, due to the segmented structure of the winding, the key electromagnetic parameters have a severe impact when the segment is excessive, making it change with the change of the mover position, especially During the thrust fluctuation and in the transition stage between segments, a great thrust fluctuation occurs, which will reduce the accuracy and reliability of the sensorless driv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/02H02K16/00H02K1/06H02K1/12H02K3/46
CPCH02K41/02H02K41/031H02K16/00H02K1/06H02K1/12H02K3/46
Inventor 王明义孙钦伟康凯李俊驰夏海
Owner HARBIN INST OF TECH
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