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Multirotor Motor Failure Detection with Piezo Sensor.

Leszek Ambroziak1, Daniel Ołdziej1, Andrzej Koszewnik1

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Summary

Detecting Unmanned Aerial Vehicle (UAV) motor failures is crucial for safety. This study introduces a lightweight piezoelectric sensor system for reliable UAV propulsion system failure detection, enhancing flight safety.

Keywords:
detectiondiagnosticsmotor failuremultirotorpiezo sensorunmanned aerial vehiclesvibration analysis

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Area of Science:

  • Aerospace Engineering
  • Mechanical Engineering
  • Control Systems

Background:

  • Failure detection in Unmanned Aerial Vehicle (UAV) motors and propulsion systems is critical for implementing active fault-tolerant control.
  • Enhancing the reliability and safety of unmanned systems is paramount, particularly for civil and commercial applications.
  • A real-world flight failure analysis highlighted the need for robust detection methods.

Purpose of the Study:

  • To present a novel method for detecting motor failures in multirotor UAVs.
  • To develop a lightweight, simple, and reliable sensor for UAV propulsion system failure detection.
  • To propose a methodology for utilizing vibration data for failure detection.

Main Methods:

  • Utilizing piezo bars (piezoelectric sensors) for motor failure detection.
  • Analyzing vibration data recorded from a flying platform arm with a propulsion system.
  • Conducting laboratory tests with the developed piezo sensor system.

Main Results:

  • Demonstrated the capability of piezoelectric sensors to record vibrations indicative of propulsion system status.
  • Provided an extensive analysis of vibration data obtained from laboratory tests.
  • Proposed a methodology for using vibration signatures to detect failures.

Conclusions:

  • Piezoelectric sensors offer a viable solution for detecting UAV propulsion system failures.
  • The developed sensor system is lightweight, simple, and reliable.
  • Implementing this detection method can significantly improve UAV safety and reliability.