Design method and system for coil thickness of fine-coarse double-layer winding magnetic levitation planar motor

By constructing harmonic force and electromagnetic force models and optimizing the thickness of the upper and lower coils, the design difficulties of magnetic levitation planar motors with high precision and large stroke were solved, and the design of magnetic levitation planar motors with high efficiency and high precision was achieved.

CN118734469BActive Publication Date: 2025-09-05HUAZHONG UNIV OF SCI & TECH
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Patent Information

Application Number
CN202410711341.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2025-09-05
Estimated Expiration
2044-06-04

AI Technical Summary

Technical Problem

Existing magnetic levitation planar motors have a contradiction in achieving high precision and large stroke, making it difficult to take into account both high efficiency and high precision positioning requirements. The selection of coil thickness parameters affects the motor performance.

Method used

By constructing a harmonic force model and an electromagnetic force model, and using the maximum heating power, maximum thrust fluctuation error, and maximum load as constraints, the thickness of the upper and lower coils is optimized to achieve the optimal thickness parameter design.

Benefits of technology

The heat dissipation performance and positioning accuracy of the magnetic levitation planar motor are improved, materials are saved, the total weight of the mover is reduced, and the high heat generation power and high precision requirements caused by high acceleration are balanced.

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Abstract

The present invention belongs to the technical field of motors and discloses a method and system for designing the coil thickness of a fine-coarse double-layer winding magnetic levitation planar motor. The method comprises the following steps: S1 determining the operating mode and design indicators of the motor to be processed based on the operating scenario of the motor to be processed; S2 constructing a harmonic force model for a single coil of the motor to be processed and using the harmonic force model to solve the horizontal thrust fluctuation error of the single coil; S3 decoupling the entire coil array to obtain the relationship between coil thickness and electromagnetic force, combining the relationship between electromagnetic force, maximum load, and motor acceleration to solve the current of the motor to be processed in the electromagnetic force model, and using the current to construct a relationship between the total heating power of the motor to be processed; S4 using the design indicators as constraints and the minimum thickness of the coil of the motor to be processed as the goal, solving the horizontal thrust fluctuation error and total heating power, thereby obtaining the coil thickness of the motor to be processed and realizing the design of the coil thickness.
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