A high-temperature superconducting pinned suspension active-passive hybrid vibration isolation system and method

The high-temperature superconducting pinned suspension active-passive hybrid vibration isolation system utilizes the magnetic flux pinning effect of the high-temperature superconductor to achieve self-stabilized suspension and passive isolation of mid-to-high frequency micro-vibrations. Combined with active control of electromagnetic coils, it achieves isolation of mid-to-low frequency micro-vibrations, solving the problem of poor vibration isolation effect of existing magnetic levitation systems in the low-frequency range and providing a low-energy-consumption and real-time response vibration isolation solution.

CN119508405BActive Publication Date: 2026-05-26NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Filing Date
2024-11-18
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing magnetic levitation vibration isolation systems have poor vibration isolation effects in the low-frequency band, and their control systems are complex, energy-intensive, and unstable, making them difficult to apply to vibration isolation applications for spacecraft and precision instruments.

Method used

By utilizing the electromagnetic field interaction between a high-temperature superconductor and a permanent magnet, the vibration isolation system can achieve automatic self-stabilizing levitation and passive isolation of mid-to-high frequency micro-vibrations through the interaction of electromagnetic fields. Meanwhile, the isolation and control of mid-to-low frequency micro-vibrations can be achieved by actively applying a small current to the electromagnetic coil.

Benefits of technology

It achieves wide-band micro-vibration isolation and control, and features low power consumption, real-time response and simple control system, suitable for micro-vibration isolation and suppression in spacecraft and precision instruments.

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Abstract

This application provides a high-temperature superconducting pinned suspension active-passive hybrid vibration isolation system and method, relating to the field of vibration isolation technology. The vibration isolation system includes a measurement and control system and a suspension system. The vibration isolation method includes stabilizing the float of the suspension system relative to the stator in an equilibrium position through suspension pretreatment. When externally excited, vibration data generated by the float connected to the isolated body relative to the stator is collected and processed. The controller processes the vibration data through an internally preset PID control algorithm and outputs a control signal. The coil on the float receives the output control signal and executes it to achieve the preset state. The system can achieve self-stabilized suspension without external energy input. At the same time, a solenoid coil is wound around the outside of the permanent magnet, and the suspension force is actively controlled in real time by adjusting the transmission current of the coil. This overcomes the problems of passive vibration isolation systems, such as the isolation frequency band depending on the natural frequency and the inability to adjust the stiffness and damping.
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