طراحی کنترل‌کننده مقاوم LMI برای مبدل SIDO بوست/ بوست مبتنی بر مدل فلوگراف سیگنال
الموضوعات :مجید عباسی 1 , محمدرضا علیزاده پهلوانی 2 , احمد عفیفی 3
1 - دانشگاه صنعتی مالک اشتر
2 - دانشگاه صنعتی مالک اشتر
3 - دانشگاه صنعتی مالک اشتر
الکلمات المفتاحية: مبدل SIDOمدل فلوگراف سیگنالکنترل مقاومنامساوی LMI,
ملخص المقالة :
در این مقاله مراحل طراحی مقاوم برای یک مبدل تک‌القاگر دوخروجی (SIDO) با استفاده از روش نامساوی ماتریسی (LMI) مورد بررسی قرار گرفته است. با توجه به ساختار پیچیده مبدل از روش فلوگراف سیگنال (SFG) برای مدل‌کردن آن استفاده شده است. با استفاده از مدل استخراج‌شده از SFG، عوامل غیر خطی و نامشخص در قالب یک چندضلعی محدب و به عنوان محدودیت‌های روش LMI در نظر گرفته می‌شوند. مقاوم‌بودن مبدل از طریق حذف تأثیر تغییرات مشخص شده و نیز داشتن پاسخ مناسب از طریق جایدهی قطب‌ها توسط روش LMI تضمین می‌گردد. خروجی‌های به دست آمده بر روی پارامترهای فیدبک حالت اعمال شده و نتایج عملکردی آن در محیط سیمولینک متلب و بر روی مدار سوئیچینگ مورد ارزیابی و صحه‌گذاری قرار گرفته‌اند. در نهایت نتایج به دست آمده با یک کنترل‌کننده PI رایج مقایسه شده است.
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