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Receding Horizon LQG Controller with FIR Filter
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    초록·키워드

    So in this paper we propose a new control method, named RHLQG/FIRF(Receding Horizon LQG with FIR Filter), for enhancing the stability robustness to the system parameter uncertainty and modelling error. The conventional LQG and LQG/LTR method are performed on the infinite horizon so it is very difficult to establish exact design parameters and thus they have much problems to be applied to real applications. Hence there are many designer's interested in solving the problems proposed here. In this paper we proposed the RHLQG/FIRF optimal controller which has robust stability against parameter variation and modelling errors. This control method uses only the information around at present therefore shows nice performance even when we do not know exact design parameters. Here we analytically shows that the RHC method [4] is robuster than LQ control method and the FIR filter [3] is robuster than Kalman filter, respectively, using the FARE (Fake Algebraic Riccati Equation) [5]. Finally, we here compare LQG and LQG/LTR with proposed control method and exemplify via simulation that RHLQG/FIR controller has better stability robustness.

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      UCI(KEPA) : I410-ECN-0101-2014-569-001242369