Cooperative quadrotors carrying a suspended load

This work proposes the representation of the high level dynamic modelling of a formation of two quadrotor UAVs cooperatively carrying a suspended load. The two quadrotors are attached to the load by massless and stretchable cables, which can slack and taut during the task accomplishment. The cable is modeled as a high stiffness spring with a damping coefficient, according to the Hooke's law, and its behavior is taken into account in the disturbance estimation. A fictitious repulsion force is also introduced to minimize the risk of a collision between the UAVs during lateral displacements. Finally, to dealt with disturbance rejection caused by the load compensation and the cable tension variations, a nonlinear controller is proposed to guide the UAVs cooperatively during positioning and trajectory-tracking tasks, considering that the movement of the UAVs is restricted to the XZ-plane. Finally, simulated results are presented, in order to validate the proposal.

[1]  Daewon Lee,et al.  Geometric control of a quadrotor UAV transporting a payload connected via flexible cable , 2014, 1407.8164.

[2]  Mário Sarcinelli Filho,et al.  High-level underactuated nonlinear control for rotorcraft machines , 2013, 2013 IEEE International Conference on Mechatronics (ICM).

[3]  Vijay Kumar,et al.  Design, modeling, estimation and control for aerial grasping and manipulation , 2011, 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[4]  Vijay Kumar,et al.  Construction with quadrotor teams , 2012, Auton. Robots.

[5]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[6]  Jim Euchner.  Design , 2014, Catalysis from A to Z.

[7]  Mario Sarcinelli-Filho,et al.  Modelling and control of a PVTOL quadrotor carrying a suspended load , 2015, 2015 International Conference on Unmanned Aircraft Systems (ICUAS).

[8]  Meeko M. K. Oishi,et al.  Lift of a cable-suspended load by a quadrotor: A hybrid system approach , 2015, 2015 American Control Conference (ACC).

[9]  R. Stephenson.  A and V , 1962, The British journal of ophthalmology.

[10]  Nabil Aouf,et al.  Visual Servoing of a Quadrotor UAV for the Tracking of Linear Structured Infrastructures , 2013, 2013 IEEE International Conference on Systems, Man, and Cybernetics.

[11]  R. Lozano,et al.  IDA-PBC methodology for a quadrotor UAV transporting a cable-suspended payload , 2015, 2015 International Conference on Unmanned Aircraft Systems (ICUAS).

[12]  Matthias R. Brust,et al.  A networked swarm model for UAV deployment in the assessment of forest environments , 2015, 2015 IEEE Tenth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP).

[13]  Mário Sarcinelli Filho,et al.  PVTOL maneuvers guided by a high-level nonlinear controller applied to a rotorcraft machine , 2014, Eur. J. Control.

[14]  Konstantin Kondak,et al.  Autonomous transportation and deployment with aerial robots for search and rescue missions , 2011, J. Field Robotics.

[15]  J. V. Stafford,et al.  Precision agriculture ’13 , 2013, Wageningen Academic Publishers.

[16]  Alexandre Santos Brandao,et al.  A Hardware-in-the-Loop Platform for Rotary-Wing Unmanned Aerial Vehicles , 2014, Journal of Intelligent & Robotic Systems.

[17]  Vijay Kumar,et al.  Cooperative Grasping and Transport Using Multiple Quadrotors , 2010, DARS.

[18]  George J. Vachtsevanos,et al.  Handbook of Unmanned Aerial Vehicles , 2014 .