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Avoiding obstacles in cooperative load transportation.

Igor Henrique Beloti Pizetta1, Alexandre Santos Brandão2, Mário Sarcinelli-Filho3

  • 1Department of Electrical Engineering, Federal University of Espírito Santo, Av. Fernando Ferrari, 514 - Goiabeiras, Vitória, ES, 29075-910, Brazil; Federal Institute of Espírito Santo, Campus Aracruz, Av. Morobá, 248 - Morobá, Aracruz, ES, Cep: 29192-733, Brazil.

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Summary
This summary is machine-generated.

This study demonstrates cooperative quadrotor control for stable load transportation, preventing oscillations and collisions. Two quadrotors carrying a single load via flexible cables achieve enhanced stability and safety.

Keywords:
Cable-suspended load transportationCooperative load transportationNonlinear controlUAV control

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Area of Science:

  • Robotics
  • Aerospace Engineering
  • Control Systems

Background:

  • Quadrotor systems are increasingly used for aerial transportation tasks.
  • Transporting payloads with single quadrotors can lead to undesirable oscillations.
  • Cooperative control of multiple quadrotors offers potential solutions for enhanced stability and payload capacity.

Purpose of the Study:

  • To investigate the cooperative control of two quadrotors for stable load transportation using flexible cables.
  • To develop and validate a strategy for preventing collisions between quadrotors and with environmental obstacles.
  • To suppress load oscillations during forward movement, a common issue with single-vehicle systems.

Main Methods:

  • Utilizing two quadrotors (AR.Drone®2.0) to cooperatively transport a single load attached via flexible cables.
  • Implementing a collision avoidance strategy to manage inter-vehicle proximity and environmental obstacles.
  • Employing simulation to test and validate the proposed cooperative control and collision avoidance strategies.

Main Results:

  • The cooperative control strategy effectively suppressed load oscillations during movement.
  • The proposed collision avoidance method successfully prevented quadrotor-quadrotor and quadrotor-obstacle collisions.
  • Simulated results validated the effectiveness of the dual-quadrotor system for stable and safe load transportation.

Conclusions:

  • Cooperative control using multiple quadrotors is a viable approach for stable aerial load transportation.
  • The developed collision avoidance strategy enhances the safety and practicality of multi-quadrotor systems.
  • This research provides a foundation for more complex multi-UAV load-carrying missions.