طراحی رؤیتگر مد لغزشی تطبیقی غیر شكننده برای دستهای از سامانههای مرتبه كسری شبهخطی دارای تأخیر حالت
الموضوعات :مجيد پرويزيان 1 , خسرو خانداني 2 , وحيد جوهري مجد 3
1 - دانشگاه تربيت مدرس
2 - دانشگاه اراك
3 - دانشگاه تربيت مدرس
الکلمات المفتاحية: رؤیتگر تطبیقی غیر شكننده, سامانه مرتبه كسری شبهخطی, مد لغزشی, نابرابریهای ماتریسی خطی,
ملخص المقالة :
سامانههای مرتبه كسری و سیستمهای كنترل مرتبه كسری در سالهای اخیر به صورت فزایندهای مورد توجه پژوهشگران در حوزههای مختلف علوم و مهندسی بوده است. از دیگر سو، بسیاری از رویكردهای كنترلی مرتبه صحیح برای استفاده در مورد سامانههای مرتبه كسری توسعه داده شدهاند. با وجود این، پژوهشهای انگشتشماری در زمینه گسترش رؤیتگرهای كلاسیك به حالت كسری انجام شده است. با توجه به گسترش روزافزون كاربردهای سامانههای مرتبه كسری، توسعه رؤیتگرهای مرتبه كسری نیز ضروری به نظر میرسد. در این مقاله، مسئله طراحی یك رؤیتگر مد لغزشی تطبیقی غیر شکننده برای دستهای از سامانههای مرتبه کسری شبهخطی دارای تأخیر زمانی بررسی شده است. ابتدا حالتهای سیستم مرتبه کسری تأخیردار با قسمت غیر خطی سازگار با استفاده از روش کنترل مد لغزشی تخمین زده شده و سپس مسئله تخمین حالت برای سیستم مرتبه کسری با قسمت غیر خطی غیر سازگار بررسی شده است. پایداری مجانبی دینامیک خطای تخمین با استفاده از روش تحلیل پایداری لیاپانوف برای سامانههای مرتبه کسری اثبات گردیده و شرایط كافی پایداری در قالب نابرابریهای ماتریسی خطی استخراج شده است. در نهایت عملكرد مؤثر روش ارائهشده در این مقاله با شبیهسازی بر روی یك مثال عددی و نیز مطالعه موردی بر روی یك سامانه اقتصادی مرتبه كسری نشان داده شده است.
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