مهندسی سازه و ساخت

مهندسی سازه و ساخت

کنترل پیش‌بین فاز حرکت برای سازه مجهز به میراگرهای MR

نوع مقاله : علمی - پژوهشی

نویسندگان
مهندسی عمران-سازه، دانشکده مهندسی عمران و محیط زیست، دانشگاه تبریز، تبریز، ایران
چکیده
سیستم‌های کنترل نیمه‌فعال به‌دلیل عملکرد هوشمند، قابلیت اطمینان بالا و نیازمندی به انرژی اندک برای انجام فرایند کنترل، مورد توجه محققان قرار گرفته‌اند. میراگرهای مغناطیسی یکی از ابزارهای کنترل این سیستم‌ها می‌باشند که با تنظیم میرایی در هر لحظه، منجر به کاهش پاسخ‌های سازه می‌شوند. به منظور عملکرد مناسب ابزارهای کنترلی، الگوریتم‌ها و قوانین کنترل مختلفی به وجود آمده‌اند که در این پژوهش، قوانین کنترل تحت عناوین قانون کنترل اسکای‌هوک، گروندهوک، کنترل فاز و حرکت نسبت به تعادل با هدف بررسی فاز حرکت سازه مورد استفاده قرار گرفتند. در الگوریتم پیشنهادی این پژوهش، از طریق پیش‌بینی فاز حرکت سازه در زمان کنونی، نیروی کنترلی مورد نیاز در زمان آینده تخمین زده شد. این امر از طریق پیش‌بینی بر روی شتاب زمین با مدل شتاب ثابت و شتاب خطی انجام پذیرفت. الگوریتم پیشنهادی بر روی یک سازه 8 طبقه مجهز به میراگرهای مغناطیسی با مدل رفتاری بوک ون، تحت تحریک دو رکورد مشخص از زلزله‌های لوماپریتا و نورثریج مورد آزمایش قرار گرفت. نتایج حاصل از بررسی نشان دادند که الگوریتم پیش‌بین فاز حرکت در کاهش پاسخ‌های سازه موفق عمل می‌کند. همچنین به‌دلیل ارائه نتایج قابل انتظار و پیچیدگی کمتر، استفاده از مدل شتاب ثابت در مقایسه با مدل شتاب خطی ترجیح داده می‌شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Phase motion predictive control for a structure equipped with MR dampers

نویسندگان English

Hosein Ghaffarzadeh
Alireza Aran
Fatemeh Javadi Amoodizaj
Faculty of Civil Engineering, University of Tabriz, Tabriz. Iran
چکیده English

Semi-active control systems have attracted the attention of researchers due to their intelligent performance, high reliability, and the little energy needed to perform the control process. Magnetorheological(MR) dampers are one of the control tools of these systems, which lead to the reduction of structural responses by adjusting the damping at any moment. To make the control tools function properly, various algorithms and control laws have been presented. In this research, the skyhook, groundhook, phase control, and motion around equilibrium control laws were utilized to investigate the phase motion of the structure. In the proposed algorithm of this research, the control force required in the future time was estimated by predicting the phase motion of the structure in the current time. This was done by predicting the ground acceleration with constant and linear acceleration models. The proposed algorithm was tested on an 8-story structure equipped with MR dampers with the Bouc–Wen model, under the vibration of two specific records of the Loma-Prieta and Northridge earthquakes. The results of the investigation illustrated that the phase motion predictive algorithm is successful in reducing the responses of the structure. Also, due to providing expected results and less complexity, using the constant acceleration model is preferred compared to the linear acceleration model.

کلیدواژه‌ها English

Semi-active Control
MR Damper
Skyhook
Groundhook
Phase Control
Predictive Control
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دوره 12، شماره 02 - شماره پیاپی 91
اردیبهشت 1404
صفحه 224-243

  • تاریخ دریافت 08 اردیبهشت 1403
  • تاریخ بازنگری 16 مرداد 1403
  • تاریخ پذیرش 27 شهریور 1403