Anti-interference blade tip timing sensor and anti-interference method for high speed rotating blades

By employing differential processing, adaptive filtering, and signal distortion correction methods, the signal interference problem of the blade tip timing sensor in the complex environment of a gas turbine was solved, enabling reliable monitoring and evaluation of high-speed rotating blades.

CN122108233APending Publication Date: 2026-05-29HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD +1
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD
Filing Date
2026-01-21
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing blade timing sensors have weak real-time anti-interference capabilities in monitoring high-speed rotating blades of gas turbines. They cannot effectively suppress signal interference under complex operating conditions such as strong electromagnetic interference, mechanical vibration, and temperature/airflow changes, resulting in unreliable signals.

Method used

The system employs a differential processing module, an adaptive filtering module, and an anti-attenuation compensation module. It cancels interference through differential signal cancellation, adaptive noise cancellation, and signal distortion correction. Combined with Hilbert transform and deep learning, it performs signal analysis to generate real-time evaluation values.

Benefits of technology

It significantly improves the signal's anti-interference capability and measurement accuracy, ensuring signal stability and reliability under complex operating conditions, and enhancing the accuracy and reliability of blade condition monitoring.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122108233A_ABST
    Figure CN122108233A_ABST
Patent Text Reader

Abstract

The application discloses an anti-interference blade end timing sensor and an anti-interference method for a high-speed rotating blade, belongs to the technical field of sensors, and solves the problem that the real-time anti-interference capability of the existing method is weak, so that the reliability of the blade end timing signal of the blade in a dynamic environment cannot be guaranteed, and comprises a differential processing module, an adaptive filtering module, an anti-attenuation compensation module and a front-end evaluation module; in the application, common-mode electromagnetic interference and mechanical vibration interference are effectively suppressed through the virtual differential method of the differential processing module and the generation of a derived reference signal, and the signal distortion problem of the high-speed rotating blade in a strong electromagnetic and high-vibration environment is solved; meanwhile, the adaptive filtering module can further suppress high-frequency vibration noise and electromagnetic noise, and through variational modal decomposition and NLMS filter dynamic optimization, the signal signal-to-noise ratio is guaranteed, and the method is suitable for high-speed and high-noise working conditions.
Need to check novelty before this filing date? Find Prior Art