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طراحی کنترلر فازی بهینه بهمنظور کنترل نیمهفعال ارتعاشات ساختمان چند طبقه با استفاده از یک مدل پارامتر گسترده و میراگرهای مگنتوریولوژیکال | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 11، دوره 51، شماره 1، فروردین و اردیبهشت 1398، صفحه 133-146 اصل مقاله (1.09 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2017.12919.5470 | ||
| نویسندگان | ||
| نجمه علی اکبری؛ حمید معین فرد* | ||
| دانشکده مهندسی، دانشگاه فردوسی مشهد، مشهد، ایران | ||
| چکیده | ||
| هدف اصلی مقاله، ارائه کنترلر فازی بهینه به منظور کنترل ارتعاشات یک ساختمان پنج طبقه به کمک میراگرهای مگنتوریولوژیکال در اثر تحریک ناشی از زلزله است. بدین منظور معادلات حرکت ساختمان با استفاده از مدل با پارامتر گسترده استخراج شده است. در ادامه، بعد از به دست آوردن شکل مودهای ساختمان با روش المان محدود، برای هر طبقه از ساختمان یک میراگر مگنتوریولوژیکال در نظر گرفته میشود. به منظور دستیابی به قوانین کنترلر فازی، یک سیستم ساده یک درجه آزادی مورد بررسی قرار گرفته است و قوانین به دست آمده از شبیه سازی حلقه باز، به منظور استفاده در کنترل ارتعاشات ساختمان تعمیم مییابد. همچنین از مدل پیشنهاد شدهی اسپنسر برای تحلیل رفتار میراگر مگنتوریولوژیکال بهره گرفته شده است. بر اساس درک به دست آمده از عملکرد میراگر و همچنین با استفاده از قوانین فازی به دست آمده از شبیه سازی سیستم یک درجه آزادی، کنترلر فازی درجهت کاهش دامنه ارتعاشات ساختمان در برابر زلزله طراحی گردیده است. در انتها نیز از الگوریتم ژنتیک به منظور بهبود شاخصهای عملکرد کنترلر استفاده شده است. مقایسه نتایج به دست آمده از کنترل نیمه فعال با کنترلهای غیرفعال-بدون ولتاژ و غیرفعال-با ولتاژ، نشان میدهد که کنترلر فازی بهینه به خوبی دامنه ارتعاشات طبقات ساختمان را کاهش میدهد. | ||
| کلیدواژهها | ||
| کنترل ارتعاشات نیمهفعال؛ ساختمان چند طبقه؛ میراگرهای مگنتوریولوژیکال؛ سیستم پارامتر گسترده؛ کنترلر فازی | ||
| عنوان مقاله [English] | ||
| Design of Optimal Fuzzy Controllers for Semi Active Vibration Suppression of MultiFloor Buildings Based on a Distributed Parameter Model and Magneto Rheological Dampers | ||
| نویسندگان [English] | ||
| N. Aliakbari؛ H. Moeenfard | ||
| School of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| چکیده [English] | ||
| The main objective of this paper is to propose an optimal fuzzy controller for suppressing the resulting vibration of an earthquake in a five floor building facilitated with magneto rheological damper. To this end, by utilizing the Hamilton’s principle, equations of motion of the system are derived based on a distributed parameter model. The mode shapes of the system are found by finite element simulations. A magneto rheological damper is used for each floor. To find the rule base of the fuzzy controller, a single degree of freedom vibratory system is considered and the rules derived from open loop simulations are utilized for controlling the vibration of the building. Spencer’s model is employed for analyzing the behavior of the magneto rheological damper. By recognizing the magneto rheological damper behavior as well as having the rule based obtained from single degree of freedom simulations, a fuzzy controller is designed to suppress the vibration of the building. Finally, the genetic algorithm is used to improve the performance of the proposed controller. Comparing the results of semi-active vibration control with passive-on and passive-off control strategies reveals that the suggested fuzzy controller can effectively reduce the amplitude of the vibration of the building. | ||
| کلیدواژهها [English] | ||
| Semi-active vibration control, Multi-floors Building, Magneto rheological dampers, Distributed param | ||
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| مراجع | ||
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