A magnetic suspension bearing anti-reverse rotation method, storage medium and system

By selecting high-amplitude frequency domain signals and analyzing phase differences in the magnetic levitation bearing system, the structural complexity caused by multiple sensors is solved, enabling real-time judgment of rotation speed and direction of rotation, which is suitable for complex or compact equipment.

CN122280957APending Publication Date: 2026-06-26BEIJING ENYOU TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING ENYOU TECH CO LTD
Filing Date
2026-03-12
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing magnetic levitation bearing systems require multiple speed sensors to monitor rotation speed and direction of rotation in high-speed rotating equipment, which increases structural complexity and makes them difficult to implement in compact designs.

Method used

By selecting signals with large amplitudes from the multiple sensors of the magnetic levitation bearing and converting them into frequency domain signals, the same frequency signals are tracked in the low-speed range. Combined with the phase difference analysis of the quadrature sensor signals, the rotation speed and direction of rotation can be determined, avoiding dependence on additional sensors.

Benefits of technology

It enables real-time calculation of rotation speed and direction of rotation without the need for an additional speed sensor, simplifying structural design and making it suitable for complex or compact equipment.

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Abstract

This invention relates to a method for preventing reverse rotation of a magnetic levitation bearing, comprising the steps of: selecting sensor signals from multiple sensors of the magnetic levitation bearing; analyzing the selected sensor signals and converting them from time-domain signals to frequency-domain signals; selecting the same-frequency signal with the largest amplitude in the frequency-domain signal during the low-speed segment of rotor startup and tracking it during the acceleration process to obtain the rotational speed value; and analyzing the rotational direction based on the current rotational speed and combining it with two orthogonal sensor signals. This invention also provides a storage medium and a magnetic levitation bearing anti-reverse rotation system. Using the magnetic levitation bearing anti-reverse rotation method, storage medium, and system described in this invention, rotational speed calculation and rotational direction determination can be achieved without a rotational speed sensor.
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