Decentralized MRAC for Large Scale Systems with Input and State Delays | ||
| The Modares Journal of Electrical Engineering | ||
| Article 5, Volume 12, Issue 3, 2012, Pages 32-38 PDF (115.44 K) | ||
| Authors | ||
| Syed Hamid Hashemipour1; Nastrn Vasegh* 2; Ali Khaki Sedigh3 | ||
| 1Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. | ||
| 2Department of Electrical Engineering, ShahidRajaee Teacher Training University, Tehran, Iran. , | ||
| 3Department of Electrical Engineering, Khaje Nasir Toosi University of Technology, Tehran, Iran. | ||
| Abstract | ||
| In this paper, the problem of decentralized model reference adaptive control (MRAC) for a class of large scale systems with time varying delay in interconnected term and input and state delays is studied. To compensate the effect of input delay indirectly, a Smith predictor built on. To handle the effects of the time delays in input, the adaptive controller part includes two auxiliary dynamic filters with time varying gains. Under a usual assumption that the interconnections are assumed to be Lipschitz in its variables and uniformly in time with unknown Lipschitz gains, the difficulties from unknown interconnections are dealt. A generalized error is defined and by a suitable Lyapunov function, an adaptive controller is designed to stabilize it. Decentralized adaptive feedback controller can render the generalized error system uniformly ultimately bounded stable is designed. Finally, a numerical example is given to demonstrate the feasibility and effectiveness of the proposed design techniques. | ||
| Keywords | ||
| Input delays; Time varying delay; decentralized MRAC; interconnected system | ||
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