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Relative Position-based Collision Avoidance System for Swarming UAV Applications

Rethnaraj Rambabu, Muhammad Rijaluddin Bahiki, Syaril Azrad


This paper presents the development of quadrotor unmanned aerial vehicle (UAV) for close proximity swarming applications that is capable of quad-directional collision avoidance with obstacles through the implementation of relative position-based cascaded PID position and velocity controllers. A collision avoidance algorithm that decides evasive maneuvers in two dimensional flight by the means of net error calculation is developed. Sensor fusion of ultrasonic (US) and infrared (IR) sensors is performed to obtain a reliable relative position data of obstacles which then fed into collision avoidance controller (CAC) for generating necessary response in terms of attitude commands. Flight tests performed in both indoor and outdoor environments proved the capability of UAV to avoid collisions with the obstacles and dummy non-flying UAVs that existed at a closer distance in its four primary directions of detections during flight successfully.

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D.M. Sobers, Jr., G. Chowdhary, and E.N. Johnson, “Indoor navigation for unmanned aerial vehicles,” AIAA Guidance, Navigation and Control Conference, 2009.

A.Y. Chee and Z.W. Zhong, “Control, navigation and collision avoidance for an unmanned aerial vehicle,” Sensors and Actuators A: Physical, vol. 190, pp. 66-76, 2012.

M. Becker, R.C.B. Sampaio, S. Bouabdullah, V. de Perrot, and R. Siegwart, “In flight collision avoidance for a Mini-UAV robot based on

onboard sensors,” Journal of the Brazilian Society of Mechanical

Sciences and Engineering, 2012.

N. Gageik, T. Muller, and S. Montenegro, “Obstacle detection and collision avoidance using ultrasonic distance sensors for an autonomous

quadrocopter,” Proceedings of 1st microdrones International Research

Workshop UAV Week 2012, 2012, Germany.

J.R. Raol, Multi-Sensor Data Fusion with MATLAB®, CRC Press, 2009.

S. Hauert et al., “Reynolds flocking in reality with fixed-wing robots:

communication range vs. maximum turning rate,” IEEE/RSJ

International Conference on Intelligent Robots and Systems, pp. 5015-5020, 2011.

D.B. Wilson and A.H. Goktogan, “An unmanned aerial vehicle rendezvous and formation,” Proceedings of the 2012 International Conference on Unmanned Aircraft Systems (ICUAS'12), 2012.

G. Vásárhelyi et al., “Outdoor flocking and formation flight with autonomous aerial robots,” 2014.

A. Kushleyev, D. Mellinger, C. Powers, and V. Kumar, “Towards a swarm of agile micro quadrotors,” Autonomous Robots, vol. 35, no. 4, pp. 287-300, 2013.



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