نویسندگان
دانشکده مهندسی مکانیک، دانشگاه صنعتی اصفهان
چکیده
ورق های مرکب دوپایداره به علت داشتن دو حالت کاملاً پایدار و عدم نیاز به منبع دائم انرژی برای ماندن در هر کدام از این حالت های پایدار، کاربردهای فراوانی دارند. توجه این پژوهش بر بررسی پاسخ ارتعاشی و کنترلی صفحات مرکب دوپایداره با چینش[90/0] متمرکز شده است. بدین منظور با استفاده از روش ریلی - ریتز به همراه اصل هامیلتون و نوشتن برنامه ویژه در نرم افزار متلب، معادلات الکترومکانیکی حاکم بر ورق بدست آمده و در ادامه به منظور کنترل ارتعاشات ورق با استفاده از روش فازی، کنترلری طراحی و عملکرد آن در نرم افزار سیمولینک شبیه سازی شده است. به منظور نزدیک کردن شرایط مسئله به واقعیت، عواملی چون اغتشاش و تأخیر زمانی کنترلر در شبیه سازی لحاظ گردیده است.
کلیدواژه‌ها
عنوان مقاله [English]
Control of Nonlinear Vibration in Bi-Stable Composite Plates using Fuzzy Logic
نویسندگان [English]
- A. Firouzian-Nejad
- S. Ziaei-Rad
- M. S Taki
چکیده [English]
Having two stable configurations and no need to any permanent energy sources for remaining in each of these stable states, bi-stable composite plates have gained many applications. This paper has concentrated on control and dynamic response of cross ply bi-stable composite plates (0.90). To do this, using Hamilton principle , Rayleigh-Ritz method, and a MATLAB programme specifically designed for this study, have been applied in order to extract the governing equation of motions in plates. Then, in order to control the large vibration of the cross ply bi-stable plate, a fuzzy controller was proposed using a fuzzy logic and its prformance was simulated by Simulink in Matlab environment. In order to simulate the real conditions on the controller performance, the effect of disturbances and time delay on the responses of controller were also investigated.
کلیدواژه‌ها [English]
- Bi-stable composite plate
- snap-through
- nonlinear vibration
- fuzzy logic
- Control
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