High-speed unmanned aerial vehicle structure servo elastic coupling vibration suppression control method

By designing a cascaded notch filter with dual center frequencies, the problem of servo elastic coupling resonance in the structure of high-speed UAVs was solved, achieving effective suppression of multi-frequency resonance and low-latency control, thus ensuring the flight safety of UAVs.

CN121995980APending Publication Date: 2026-05-08XIAN AISHENG TECH GRP
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Patent Information

Application Number
CN202610039626.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-13
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

High-speed unmanned aerial vehicles (UAVs) suffer from structural servo elastic coupling resonance at multiple frequencies, which existing filters cannot effectively suppress. Furthermore, traditional methods suffer from problems such as large filtering delays, narrow frequency ranges, and limited structural design, making it difficult to meet the requirements of control systems.

Method used

Design a cascaded notch filter with dual center frequencies, determine the frequency that causes resonance through spectrum analysis, and use a cascaded notch filter in the control system to filter and suppress resonance, thus maintaining the wide bandwidth and low delay of the control system.

Benefits of technology

It effectively suppresses the servo elastic coupling vibration of the high-speed UAV structure, avoids control system delay, ensures flight safety, and does not affect the original control performance.

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Abstract

The invention relates to the technical field of signal processing, in particular to a high-speed unmanned aerial vehicle structure servo elastic coupling vibration suppression control method, system and device, a medium and a program product. Obtaining a target control loop causing resonance; spectral analysis is carried out, and double-center frequencies causing resonance are obtained; a cascade wave trap with double center frequencies is designed; and the servo elastic coupling vibration of the unmanned aerial vehicle structure is suppressed. According to the method, the problems of difficulty in structure modification, narrow notch frequency range and large low-pass filtering delay of an existing structure servo elastic coupling resonance solving method are solved, the performance of a control system cannot be reduced, and the flight safety is ensured.
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