S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Journal Papers (저널논문_기계항공공학부)
An Extended Robust H∞ Filter for Nonlinear Constrained Uncertain Systems
- Seo, Jaewon; Yu, Myeong-Jong; Park, Chan Gook; Lee, Jang Gyu
- Issue Date
- IEEE Trans. Signal Processing, Vol. 54, pp. 4471-4475, Nov. 2006.
- Extended robust H-inf filter; nonlinear estimation; nonlinear uncertain system; robust estimation
- In this correspondence, a robust filter is proposed to effectively estimate the system states in the case where system model uncertainties as well as disturbances are present. The proposed robust filter is constructed based on the linear approximation methods for a general nonlinear uncertain system with an integral quadratic constraint. We also derive the important characteristic of the proposed filter, a modified H-inf performance index. Analysis results show that the proposed filter has robustness against disturbances such as process and measurement noises, and against parameter uncertainties. Simulation results show that the proposed filter provides a performance improvement.
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