Mr. Xiangcheng Zhang Profile

Xiangcheng Zhang

at Purdue Univ

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Proceedings Article | 10 April 2013 Paper

Fuzzy logic control of the building structure with CLEMR dampers

Xiang-Cheng Zhang, Zhao-Dong Xu, Xing-Huai Huang, Jun-Tao Zhu

Proceedings Volume 8688, 86882G (2013) https://doi.org/10.1117/12.2009517

KEYWORDS: Fuzzy logic, Mathematical modeling, Earthquakes, Vibration control, Control systems, Lead, MATLAB, Picosecond phenomena, Phase modulation, Process control

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The semi-active control technology has been paid more attention in the field of structural vibration control due to its high controllability, excellent control effect and low power requirement. When semi-active control device are used for vibration control, some challenges must be taken into account, such as the reliability and the control strategy of the device. This study presents a new large tonnage compound lead extrusion magnetorheological (CLEMR) damper, whose mathematical model is introduced to describe the variation of damping force with current and velocity. Then a current controller based on the fuzzy logic control strategy is designed to determine control currents of the CLEMR dampers rapidly. A ten-floor frame structure with CLEMR dampers using the fuzzy logic control strategy is built and calculated by using MATLAB. Calculation results show that CLEMR dampers can reduce the seismic responses of structures effectively. Calculation results of the fuzzy logic control strategy are compared with those of the semi-active limit Hrovat control structure, the passive-off control structure, and the uncontrolled structure. Comparison results show that the fuzzy logic control strategy can determine control currents of CLEMR dampers quickly and can reduce seismic responses of the structures more effectively than the passive-off control strategy and the uncontrolled structure.

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