淡江大學機構典藏:Item 987654321/50465
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    题名: Vibration control of maglev vehicles traveling over a flexible guideway
    作者: 姚忠達;Yau, Jong-dar
    贡献者: 淡江大學建築學系
    日期: 2009-03-01
    上传时间: 2010-08-09 17:59:33 (UTC+8)
    出版者: Elsevier
    摘要: As a series of maglev (magnetically levitated) vehicles travel over a flexible guideway with constant speeds, their acceleration amplitudes will be amplified significantly at resonant or higher speeds. This paper intends to develop a neuro-PI (proportional-integral) controller to control the dynamic response of the maglev vehicles around an allowable prescribed acceleration. The maglev vehicle is simplified as a two-degree-of-freedom (two-dof) moving oscillator controlled by an on-board PI controller and the guideway is modeled as a simply supported beam. Considering the motion-dependent nature of electromagnetic forces working in a maglev system, this study presents an iterative approach to compute the dynamic response of a maglev-oscillator/guideway coupling system based on the Newmark method. The proposed neuro-PI controller is trained using back-propagation neural network in such a way that its PI gains are correlated to the generated data set of moving speeds, mid-span acceleration amplitude of the guideway, and maximum vertical accelerations of maglev oscillators. Numerical simulations demonstrate that a trained neuro-PI controller has the ability to control the acceleration amplitude for running maglev vehicles within an allowable region of prescribed acceleration.
    關聯: Journal of sound and vibration 321(1-2), pp.184-200
    DOI: 10.1016/j.jsv.2008.09.030
    显示于类别:[建築學系暨研究所] 期刊論文

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