Light-weight inertial navigation system magnetic shielding structure

By using an octagonal frustum base and a gradient transition zone design with a double curvature surface, combined with a multi-functional interface integral molding, the problems of magnetic domain disorder and structural redundancy in inertial navigation systems are solved, the uniformity and stability of the magnetic field are improved, the system mass and installation interference are reduced, and the efficient operation of the inertial navigation system in complex environments is ensured.

CN224556126UActive Publication Date: 2026-07-24SUZHOU LIGHT ARRAY SOWEI TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521804983.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-25
Publication Date
2026-07-24
Estimated Expiration
2035-08-25

AI Technical Summary

Technical Problem

Existing magnetic shielding structures for inertial navigation systems suffer from problems such as magnetic domain disorder, attenuation of shielding effectiveness due to non-uniform magnetic fields, structural redundancy, and installation interference when dealing with complex multi-physics coupling conditions, making it difficult to achieve both lightweight design and dynamic stability.

Method used

It adopts an octagonal frustum base and a double-curvature curved surface with a gradual transition zone design, and integrates multiple functional interfaces, including flange groups, boss groups and mechanical adjustment systems, to optimize magnetic field distribution and structural connection. It eliminates magnetic domain disorder caused by sharp bends in the edges of traditional shells, improves magnetic field uniformity and stability, and reduces redundant mass and installation interference through native integration.

Benefits of technology

It significantly improves the uniformity and stability of magnetic field shielding, reduces structural redundancy, avoids assembly stress concentration, improves space utilization, prevents resonance amplification, and ensures the reliability and efficient operation of the system in complex environments.

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Abstract

The utility model discloses a lightweight inertial navigation system magnetic shielding structure, which comprises a cavity and a base, the cavity is arranged above the base, a gradual transition area is arranged between the cavity and the base, the gradual transition area adopts a double-curvature curved surface to connect the cavity and the base, and gradient distribution with wall thickness gradually increasing from top to bottom is formed. According to the magnetic shielding structure of the lightweight inertial navigation system, the mechanism is optimized, and through the design of the base and the double-curvature curved surface gradual transition area, magnetic domain disorder caused by sharp turning of edges of a traditional shell is eliminated, uniform distribution of magnetic lines of force is ensured, and the uniformity and stability of magnetic field shielding are remarkably improved; and meanwhile, the systematic defects of secondary assembly redundancy and stress concentration of a traditional scheme are overcome.
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