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Wind and Structures Volume 38, Number 3, March 2024 , pages 161-170 DOI: https://doi.org/10.12989/was.2024.38.3.161 |
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A novel aerodynamic vibration and fuzzy numerical analysis |
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Timothy Chen, Yahui Meng, Rayuan Wang and ZY Chen
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| Abstract | ||
| In recent years, there have been an increasing number of experimental studies showing the need to include robustness criteria in the design process to develop complex active control designs for practical implementation. The paper investigates the crosswind aerodynamic parameters after the blocking phase of a two-dimensional square cross-section structure by measuring the response in wind tunnel tests under light wind flow conditions. To improve the accuracy of the results, the interpolation of the experimental curves in the time domain and the analytical responses were numerically optimized to finalize the results. Due to this combined effect, the three aerodynamic parameters decrease with increasing wind speed and asymptotically affect the upper branch constants. This means that the aerodynamic parameters along the density distribution are minimal. Taylor series are utilized to describe the fuzzy nonlinear plant and derive the stability analysis using polynomial function for analyzing the aerodynamic parameters and numerical simulations. Due to it will yield intricate terms to ensure stability criterion, therefore we aim to avoid kinds issues by proposing a polynomial homogeneous framework and utilizing Euler's functions for homogeneous systems. Finally, we solve the problem of stabilization under the consideration by SOS (sum of squares) and assign its fuzzy controller based on the feasibility of demonstration of a nonlinear system as an example. | ||
| Key Words | ||
| feedback and feedforward; fuzzy LMI control; improved optimal control performance; linearization method | ||
| Address | ||
| Timothy Chen:1)Guangdong University of Petrochem Technol, Sch Sci, Maoming City, Kuan-Du Avenue, No. 139, P525000, P.R. China 2)Division of Eng App Sci, Caltech, CA 91125, U.S.A. Yahui Meng:Guangdong University of Petrochem Technol, Sch Sci, Maoming City, Kuan-Du Avenue, No. 139, P525000, P.R. China Rayuan Wang:Guangdong University of Petrochem Technol, Sch Sci, Maoming City, Kuan-Du Avenue, No. 139, P525000, P.R. China ZY Chen:1)Guangdong University of Petrochem Technol, Sch Sci, Maoming City, Kuan-Du Avenue, No. 139, P525000, P.R. China 2)Division of Eng App Sci, Caltech, CA 91125, U.S.A. | ||