Vibration isolation rate calculation, regulation and control method and system for rigidity-variable magnetic torsional vibration buffer

By constructing the coupling model of Haierbeck array and spring torsion blades and using harmonic balance method and combining the gap adjustable mechanism, variable stiffness regulation of the magnetic torsion vibration buffer is achieved, the problems of high torque transmission and low-frequency vibration suppression in multiple operating conditions are solved, and the applicability and reliability of the buffer are improved.

CN120542017APending Publication Date: 2025-08-26CHONGQING UNIV
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Patent Information

Application Number
CN202510201126.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2025-08-26

AI Technical Summary

Technical Problem

The existing magnetic buffers are difficult to take into account both high torque transmission capabilities and broadband vibration suppression, and the stiffness and torque characteristics are fixed, so they cannot be effectively adjusted under variable operating conditions, resulting in insufficient suppression of the low-frequency band torsional vibration.

Method used

The ring-shaped Helbeck array magnetic block is coupled with the spring torsion blade, and the solution is made through equivalent magnetic charge method modeling and harmonic balance method, combined with the gap adjustable mechanism, the rigidity control of the magnetic torsion vibration buffer is realized to ensure high torque transmission and suppress low-frequency vibration.

Benefits of technology

While maintaining high torque transmission, it effectively suppresses low-frequency torsional vibration, adapts to the needs of multiple operating conditions, improves the applicability and reliability of the buffer, and expands the scope of application.

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Abstract

The invention belongs to the technical field of mechanical transmission systems, and particularly discloses a method and a system for calculating, regulating and controlling the vibration isolation rate of a rigidity-variable magnetic torsional vibration buffer, and the method comprises the following steps: obtaining a real-time working condition, modeling a single permanent magnet magnetic field by adopting an equivalent magnetic charge method, and calculating the vibration isolation rate of the rigidity-variable magnetic torsional vibration buffer; a magnetic block negative stiffness model and a spring torsion sheet positive stiffness model of the annular Halbach array are constructed, the total coupling stiffness is calculated, the vibration isolation effect of the magnetic torsional vibration buffer is solved, vibration suppression effects and resonance interval distribution under different working conditions are obtained, and based on the vibration isolation effect of the magnetic torsional vibration buffer, the vibration suppression effect of the magnetic torsional vibration buffer is calculated. The gap adjustable mechanism adjusts the rigidity of the spring torsion sheet and the gap of the magnetic ring in real time. By the adoption of the technical scheme, the gap between the inner magnetic ring and the outer magnetic ring is flexibly set according to multi-working-condition requirements, so that applicability and reliability are improved, and low-frequency torsional vibration is effectively restrained while efficient torque transmission is ensured.
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