کنترل غیرمتمرکز سازه‌های ساختمانی برشی بلند در برابر گسیختگی‌های سنسور‌‌‌ها و عدم قطعیت در تحریکات زلزله

نوع مقاله : مقاله پژوهشی

نویسندگان

1 سازه، دانشکده مهندسی عمران، دانشگاه تبریز، تبریز، ایران

2 تبریز-دانشگاه تبریز-بلوار 29 بهمن- دانشکده مهندسی عمران- گروه سازه

چکیده

این مقاله از کنترلر مقاوم ∞H با فیدبک استاتیکی خروجی و تئوری نامساوی‌های ماتریسی خطی(LMI )و نیز تعدادی تغییرات در متغیرهای LMI برای مقاوم سازی سازه‌های ساختمانی برشی در مقابل انواع عدم قطعیت‌ها و نیز نیروهای دینامیکی زلزله و باد استفاده می‌کند. برای حفظ عملکرد کل سیستم با وجود از کار افتادن کنترلر مرکزی، جلوگیری از جابه جایی حجم زیادی از داده‌ها بین سنسورها و کنترلر و نیز مسائل اقتصادی، بحث جایگزینی روش کنترل متمرکز با کنترل غیر متمرکز درانواع مختلف شامل کنترل کاملا غیرمتمرکز و کنترل غیرمتمرکزجزئی درگیر و غیردرگیر مورد مطالعه قرار می‌گیرد و سپس میزان مقاومت روش مذکور هم در کنترل متمرکز و هم در کنترل‌های غیرمتمرکز در برابر نیروهای دینامیکی مانند زلزله، عدم قطعیت در تحریکات زلزله و شکست سنسورها ارزیابی می‌شود و با یکدیگر مقایسه می‌شود. در نهایت پاسخ‌های حاصل از الگوریتم کنترلی مورد استفاده با نتایج حاصل از کنترل رگولاتور درجه دوم خطی (LQR )مقایسه می‌شود. برای این ارزیابی دو مثال عددی حل شده‌است. یک سازه‌ی برشی 5 طبقه و یک سازه‌ی برشی 20 طبقه. بر اساس نتایج، الگوریتم مذکور کاملا در برابر گسیختگی سنسورها مقاوم است، همچنین کنترلرهای غیرمتمرکز نتایج بسیار نزدیکی به کنترلر متمرکز دارند. عدم قطعیت تحریکات زلزله تغییراتی در پاسخ‌ها ایجاد می‌کند ولی باز هم پاسخ‌های کنترل شده به طور قابل توجهی کمتر از پاسخ‌های کنترل نشده هستند. لازم به ذکر است که روش مورد استفاده پاسخ‌ها را به صورت قابل ملاحظه‌ای کمتر از روش کنترلی LQR کاهش می‌دهد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Decentralized control of tall shear structures against sensor failures and uncertainty in earthquake excitations

نویسندگان [English]

  • Roya Raji 1
  • Hosein Ghaffarzadeh 2
  • Ali Hadidi 1
1 Structure, Civil engineering faculty, Tabriz university, Tabriz, Iran
2 Tabriz, Tabriz university, civil engineering faculty
چکیده [English]

This paper uses centralized and decentralized H∞ controllers with static output feedback and linear matrix inequality theory (LMI) as well as a number of changes in LMI variables to retrofit shear structures against a variety of uncertainties. The robustness of this method is evaluated both in centralized and decentralized controls against dynamic forces such as earthquake, uncertainty in earthquake excitation and sensor failure, then structural responses are compared. Finally, the responses of the used control algorithm are compared with the results of the linear quadratic regulator controller (LQR). There are two structural models, including 5 and 20 stories shear structures. The results indicate good robustness of the used control algorithm to the failure of the sensors, the clear difference in response values of the applied algorithm compared to the LQR method, and near results in centralized and decentralized controllers. Although the earthquake excitations uncertainty changes the responses but still controlled responses are clearly less than the uncontrolled responses.

کلیدواژه‌ها [English]

  • Active control؛ Decentralized control؛ Sensor failure
  • Uncertainty
  • Earthquake excitation

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نشریه مهندسی عمران امیرکبیر
دوره 52، شماره 12
اسفند 1399
صفحه 3073-3090

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