A nonlinear position controller for maritime operations of Rotary-wing UAVs
Yang, Xilin, Garratt, Matt, & Pota, Hemanshu (2011) A nonlinear position controller for maritime operations of Rotary-wing UAVs. In 18th IFAC World Congress, International Federation of Automatic Control (IFAC), Milano, Italy, pp. 1510-1515.
This paper presents a disturbance attenuation controller for horizontal position stabilization for hover and automatic landings of a Rotary-wing Unmanned Aerial Vehicle (RUAV) operating in rough seas. Based on a helicopter model representing aerodynamics during the landing phase, a nonlinear state feedback H-infinity controller is designed to achieve rapid horizontal position tracking in a gusty environment. The resultant control variables are further treated in consideration of practical constraints (flapping dynamics, servo dynamics and time lag effect) for implementation purpose. The high-fidelity closed-loop simulation using parameters of the Vario helicopter verifies performance of the proposed position controller. It not only increases the disturbance attenuation capability of the RUAV, but also enables rapid position response when gusts occur. Comparative studies show that the H-infinity controller exhibits great performance improvement and can be applied to ship/RUAV landing systems.
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|Item Type:||Conference Paper|
|Keywords:||helicopter control, UAV|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100) > Aircraft Performance and Flight Control Systems (090104)|
|Divisions:||Current > Research Centres > Australian Research Centre for Aerospace Automation
Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2011 International Federation of Automatic Control (IFAC)|
|Deposited On:||24 Sep 2013 22:45|
|Last Modified:||28 Oct 2013 18:38|
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