A journal of IEEE and CAA , publishes high-quality papers in English on original theoretical/experimental research and development in all areas of automation
Volume 1 Issue 4
Oct.  2014

IEEE/CAA Journal of Automatica Sinica

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Article Contents
Manoj Kumar, Karthikeyan Rajagopal, Sivasubramanya Nadar Balakrishnan and Nhan T. Nguyen, "Reinforcement Learning Based Controller Synthesis for Flexible Aircraft Wings," IEEE/CAA J. of Autom. Sinica, vol. 1, no. 4, pp. 435-448, 2014.
Citation: Manoj Kumar, Karthikeyan Rajagopal, Sivasubramanya Nadar Balakrishnan and Nhan T. Nguyen, "Reinforcement Learning Based Controller Synthesis for Flexible Aircraft Wings," IEEE/CAA J. of Autom. Sinica, vol. 1, no. 4, pp. 435-448, 2014.

Reinforcement Learning Based Controller Synthesis for Flexible Aircraft Wings

Funds:

This work was supported by National Science Foundation of USA (1002333).

  • Aeroelastic study of flight vehicles has been a subject of great interest and research in the last several years. Aileron reversal and flutter related problems are due in part to the elasticity of a typical airplane. Structural dynamics of an aircraft wing due to its aeroelastic nature are characterized by partial differential equations. Controller design for these systems is very complex as compared to lumped parameter systems defined by ordinary differential equations. In this paper, a stabilizing statefeedback controller design approach is presented for the heave dynamics of a wing-fuselage model. In this study, a continuous actuator in the spatial domain is assumed. A control methodology is developed by combining the technique of "proper orthogonal decomposition" and approximate dynamic programming. The proper orthogonal decomposition technique is used to obtain a low-order nonlinear lumped parameter model of the infinite dimensional system. Then a near optimal controller is designed using the single-network-adaptive-critic technique. Furthermore, to add robustness to the nominal single-network-adaptive-critic controller against matched uncertainties, an identifier based adaptive controller is proposed. Simulation results demonstrate the effectiveness of the single-network-adaptive-critic controller augmented with adaptive controller for infinite dimensional systems.

     

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