Abstract
In this paper, a class of nonlinear large-scale systems with similar subsystems is studied. Both matched and unmatched uncertainties are considered by utilizing their bounding functions, and the interconnections take a more general form than considered previously. Based on a constrained Lyapunov equation, a nonlinear dynamic output feedback decentralized controller is presented. Unlike existing results, matched uncertainties are considered in the control design; by using a decomposition of the interconnections, the known and uncertain interconnections are treated separately; thus, the robustness is improved and conservativeness is reduced significantly. The computation effort for solving the Lyapunov equation is greatly reduced by taking into account the similar subsystem structure. Finally, simulation is used to illustrate the effectiveness of our results.
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Lam, J., and Yang, G. H., Balanced Model Reduction of Symmetric Composite Systems, International Journal of Control, Vol. 65, pp. 1031–1043, 1996.
Qu, Z., and Dawson, D. M., Robust Control of Cascaded and Individually Feedback Linearizable Nonlinear Systems, Automatica, Vol. 30, pp. 1057–1064, 1994.
Yan, X. G., Wang, J. J., Lu, X. Y., and Zhang, S. Y., Decentralized Output Feedback Robust Stabilization for a Class of Nonlinear Interconnected Systems with Similarity, IEEE Transactions on Automatic Control, Vol. 43, pp. 294–299, 1998.
Chen, Y. H., Wang, W. J., and Mau, L. H., Robust Stabilization of Large-Scale Time-Delay Systems with Estimated State Feedback, Journal of Optimum Theory and Application, Vol. 89, pp. 543–559, 1996.
Jain, S., and Khorrami, F., Decentralized Adaptive Output Feedback Design for Large-Scale Nonlinear Systems, IEEE Transactions on Automatic Control, Vol. 42, pp. 729–735, 1997.
Mahmoud, M. S., Stabilizing Control for a Class of Uncertain Interconnected Systems, IEEE Transactions on Automatic Control, Vol. 39, pp. 2484–2488, 1994.
Yan, X. G., and Dai, G. Z., Decentralized Output Feedback Robust Control for Nonlinear Large-Scale Systems, Automatica, Vol. 34, pp. 1469–1472, 1998.
Chen, Y. H., Decentralized Robust Output and Estimated State Feedback Controls for Large-Scale Systems, International Journal of Control, Vol. 46, pp. 1979–1992, 1987.
Wang, W. J., and Mau, L. G., Stabilization and Estimation for Perturbed Discrete Time-Delay Large-Scale Systems, IEEE Transactions on Automatic Control, Vol. 42, pp. 1277–1282, 1997.
Syrmos, V. L., Abdallah, C. T., Dorato, P., and Grigoriadis, K., Static Output Feedback: A Survey, Automatica, Vol. 33, pp. 125–137, 1997.
Sundareshan, M. K., and Elbanna, R. M., Qualitative Analysis and Decentralized Controller Synthesis for a Class of Large-Scale Systems with Symmetrically Interconnected Subsystems, Automatica, Vol. 27, pp. 383–388, 1991.
Yan, X. G., Lam, J., and Dai, G. Z., Decentralized Robust Control for Nonlinear Similar Large-Scale Systems, Computer and Electrical Engineering, Vol. 25, pp. 169–179, 1999.
Isidori, A., Nonlinear Control Systems, 3rd Edition, Springer Verlag, London, Great Britain, 1995.
Marino, R., and Tomei, P., Nonlinear Control Design, Prentice Hall International, Englewood Cliffs, New Jersey, 1995.
Zak, S. H., On the Stabilization and Observation of Nonlinear/Uncertain Dynamic Systems, IEEE Transactions on Automatic Control, Vol. 35, pp. 604–607, 1990.
Cheng, C. F., Output Feedback Stabilization for Uncertain Systems: Constrained Riccati Approach. IEEE Transactions on Automatic Control, Vol. 43, pp. 81–84, 1998.
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Yan, X.G., Lam, J., Li, H.S. et al. Decentralized Control of Nonlinear Large-Scale Systems Using Dynamic Output Feedback. Journal of Optimization Theory and Applications 104, 459–475 (2000). https://doi.org/10.1023/A:1004674032740
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DOI: https://doi.org/10.1023/A:1004674032740