Control method for sway prevention control device for railway vehicle

The control method for vibration prevention devices in railway vehicles switches to displacement control using a rotation angle sensor and battery backup to stabilize the carbody relative to the bogie during earthquakes, addressing the loss of effectiveness in seismic events and ensuring safety and stability.

JP2025180527APending Publication Date: 2025-12-11NIPPON STEEL CORPORATION
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Patent Information

Application Number
JP2024087921
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-30
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Existing vibration prevention control devices in railway vehicles lose effectiveness during earthquakes, leading to increased vibration and reduced safety, as they rely on acceleration sensors that malfunction during seismic events.

Method used

A control method for vibration prevention control devices that switches from vibration suppression control to displacement control using a rotation angle sensor during earthquakes, ensuring the actuator maintains a predetermined rotation angle to stabilize the carbody relative to the bogie, and utilizes a battery as a backup power source.

Benefits of technology

Ensures safety and stability of railway vehicles during earthquakes by suppressing carbody displacement relative to the bogie, maintaining ride comfort and safety without additional hardware, even when power from overhead lines is lost.

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Abstract

To provide a control method for a sway prevention control device that can ensure the safety of railway vehicles during an earthquake.SOLUTION: The control method includes a normal operation step (S5), a determination step (S10), and an emergency operation step (S30). In the normal operation step (S5), a controller (34) operates an actuator (32) on the basis of the vibration acceleration obtained from an acceleration sensor (31), such that the vibration acceleration becomes smaller than the obtained vibration acceleration. In the determination step (S10), it is determined whether information indicating an earthquake occurring was obtained during the normal operation step (S5). In the emergency operation step (S30), if the determination step (S10) determines that information about an earthquake occurring was acquired, the controller (34) operates the actuator (32) on the basis of the rotational angle acquired from a rotational angle sensor (33) instead of the acceleration sensor (31), so that the rotational angle returns to a predetermined value.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

  • Yaw damper device and control method of yaw damper device

    JP2022072675A