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Local model networks based mixed-sensitivity H-infinity control of CE-150 helicopters
M.R.Kafi,H.Chaoui,S.Miah,A.Debilou
0
(Laboratoire de G′ enie Electrique (LAGE), Universit′e Kasdi Merbah Ouargla, Ouargla, Algeria)
摘要:
In this paper, a local model network H-infinity control is proposed for CE-150 helicopter stabilization. The proposed strategy capitalizes on recent developments on H-infinity control and its promising results in robust stabilization of plants under unstructured uncertainties. CE-150 helicopters are known for their varying operating conditions along with external disturbances. Therefore, local model networks are introduced for their adaptive feature and since they provide a powerful combination of fuzzy logic and conventional linear control techniques to control nonlinear systems without the added computational burden of soft-computing techniques. Using the fact that the system can be linearized at different operating points, a mixed sensitivity H-infinity controller is designed for the linearized system, and combined within a network to make transitions between them. The proposed control structure ensures robustness, decoupling of the system dynamics while achieving good performance. A comparison is carried-out against the well-known proportional-integral-derivative (PID) control technique. Results are presented to illustrate the controller's performance in various operating conditions.
关键词:  H-infinity control, helicopter, local model network, robust stabilization
DOI:
基金项目:
Local model networks based mixed-sensitivity H-infinity control of CE-150 helicopters
M. R. Kafi,H. Chaoui,S. Miah,A. Debilou
(1.Laboratoire de G′ enie Electrique (LAGE), Universit′e Kasdi Merbah Ouargla, Ouargla, Algeria; 4.4.Faculty of Sciences, Department of Electronics, Biskra University, Algeria;Center for Manufacturing Research, Department of ECE, Tennessee Technological University, Cookeville, TN, U.S.A.;Department of Electrical and Computer Engineering, Bradley University, Peoria, IL, U.S.A.)
Abstract:
In this paper, a local model network H-infinity control is proposed for CE-150 helicopter stabilization. The proposed strategy capitalizes on recent developments on H-infinity control and its promising results in robust stabilization of plants under unstructured uncertainties. CE-150 helicopters are known for their varying operating conditions along with external disturbances. Therefore, local model networks are introduced for their adaptive feature and since they provide a powerful combination of fuzzy logic and conventional linear control techniques to control nonlinear systems without the added computational burden of soft-computing techniques. Using the fact that the system can be linearized at different operating points, a mixed sensitivity H-infinity controller is designed for the linearized system, and combined within a network to make transitions between them. The proposed control structure ensures robustness, decoupling of the system dynamics while achieving good performance. A comparison is carried-out against the well-known proportional-integral-derivative (PID) control technique. Results are presented to illustrate the controller's performance in various operating conditions.
Key words:  H-infinity control, helicopter, local model network, robust stabilization