A HYBRID PI CONTROL SCHEME FOR AIRSHIP HOVERING
Abstract
Airship provides us many attractive applications in aerospace industry including transportation of heavy payloads, tourism, emergency management, communication, hover and vision based applications. Hovering control of airship has many utilizations in different engineering fields. However, it is a difficult problem to sustain the hover condition maintaining controllability. So far, different solutions have been proposed in literature but most of them are difficult in analysis and implementation. In this paper, we have presented a simple and efficient scheme to design a multi input multi output hybrid PI control scheme for airship. It can maintain stability of the plant by rejecting disturbance inputs to ensure robustness. A control scheme based on feedback theory is proposed that uses principles of optimality with integral action for hovering applications. Simulations are carried out in MTALAB for examining the proposed control scheme for hovering in different wind conditions. Comparison of the technique with an existing scheme is performed, describing the effectiveness of control scheme.References
A. Elfes, S.S. Bueno, M. Bergerman, and J.
G. Ramos A Semi-autonomous Robotics
Airship for Environmental Monitoring
Missions, Proceedings of the IEEE
International Conference on Robotics and
Automation, Belgium, Vol. 4 (1998) pp. 3449-
B.L. Nagabhushan and N.P. Tomlinson, J.
Aircraft AIAAl. 19, No.10 (1983).
H.C. Curtiss and V. Sumantrant, Journal of
Guidance AIAA 8, No.6 (1985).
J.R. Azinheira, E.C. de Paiva, J.J.G. Ramos
and S.S. Bueno, Hovering Control of an
Autonomous Unmanned Airship, 4th
Portuguese Conference on Automatic
Control, DC, Controlo’ , ISBN 972 98603-0-0
(2000).
J.R. Azinheira, P. Rives, J.R.H. Carvalho,
G.F. Silveira, E.C. de Paiva and S.S. Bueno,
“Visual servo control for the hovering of an
outdoor robotic airship,†in Proc. IEEE Int.
Conf. Robot. Autom., Washington, DC (2002)
pp. 2787–2792.
A. Moutinho and J.R. Azinheira, A GainScheduling Approach for Airship Stabilization,
In Proceedings of the 7th Portuguese
Conference on Automatic Control, Lisbon,
Portugal (2006).
D.K. Schmidt, Journal of Guidance, Control
and Dynamics 30, No. 2 (2007) pp. 540.
J.R. Azinheira and A. Moutinho, Journal of
Guidance, Control, and Dynamics AIAA 29,
No. 4 (2006).
J.R. Azinheria and A. Moutinho, IEEE
Transactions on Control System Technology
, No. 3 (2008) 258.
S.B.V. Gomes, An Investigation of the Flight
Dynamics of Airships with application to the
YEZ-2A, Ph.D. Thesis, College of
Aeronautics, Cranfield University (1990).
S.B.V. Gomes and J.J.G. Ramos, Airship
Dynamic Modeling for Autonomous
Operation, Proc of IEEE International
conference on Robotics & Automation
Leuven, Belgium (1998).
A. Kornienko, System Identification Approach
for Determining Flight Dynamical
Y. Li, Dynamics Modeling and Simulation of
Flexible Airships, Ph.D. Thesis, McGill
University, Montreal (2007).
S.P. Jones and J.D. De Laurier, Aerodynamic
Estimation Techniques for Aerostats and
Airships, AIAA Lighter-than-Air Systems
Conference, AIAA, Annapolis, MD (1981).
J.B. Mueller, M.A. Paluszek and Y. Zhao,
Development of an Aerodynamic Model and
Control Law Design for a High Altitude
Airship,†AIAA 3rd "Unmanned Unlimited"
Technical Conference, Workshop and
Exhibit., AIAA, Chicago, IL (2004).
G.A. Khoury and J.D. Gillett, Airship
Technology, Cambridge Aerospace Series:
(2004).
M.V. Cook, The Linearised Small
Perturbation Equation of motion for an
Airship, Working Paper No. WP 8,
Aerodynamics Department, College of
Aeronautics, Cranfield (1987) (Revised
.
A.B. Moutinho, Modeling and Nonlinear
Control for Airship Autonomous Flight, Ph.D.
thesis, Instituto Superior Tecnico, Lisbon
(2007).
C.T. Chen, Linear System Theory and
Design, Oxford University Press, Inc (1999).
D.S. Naidu, Optimal Control Systems, CRC
Press LLC (2003).
A. Tewari, Modern Control Design with
MATLAB and SIMULINK, John Wiley and
Sons, Ltd. (2002).
S. Nakamura, Numerical Analysis and
Graphic Visualization with MATLAB,
Prentice-Hall, Inc. (2002).
