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Research on Roll Attitude Estimation Algorithm for Precision Firefighting Extinguishing Projectiles Based on Single

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This study introduces a novel single-gyro method for calculating the attitude angle of firefighting projectiles using adaptive filtering. This innovation enhances precision and reduces system complexity for critical emergency response applications.

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Area of Science:

  • Aerospace Engineering
  • Control Systems
  • Signal Processing

Background:

  • Accurate attitude angle measurement is crucial for firefighting projectile stability and payload release.
  • Dynamic environments (smoke, heat, EM interference) challenge roll angle measurement.
  • Existing multi-sensor fusion methods are complex and costly.

Purpose of the Study:

  • To develop a simplified, cost-effective method for measuring the roll attitude angle of firefighting projectiles.
  • To overcome limitations of traditional multi-sensor fusion techniques.
  • To enhance the reliability and effectiveness of firefighting projectile systems.

Main Methods:

  • Utilized micro-electromechanical inertial measurement units (MIMUs) for attitude sensing.
  • Integrated Fourier transform time-frequency analysis with a dynamic coefficient-optimized Infinite Impulse Response (IIR) bandpass filter.
  • Implemented adaptive filter parameter updates based on instantaneous roll angular velocity.

Main Results:

  • Achieved high-precision dynamic decoupling of the roll angle.
  • Eliminated reliance on external sensors like radar or GPS.
  • Demonstrated robust tracking capability under time-varying conditions.

Conclusions:

  • The proposed single-gyro method significantly reduces system complexity and cost.
  • Provides a general framework for adaptive frequency-tracking filtering.
  • Enhances firefighting projectile control for improved urban and forest fire suppression and emergency response.