دانش و فناوری هوافضا

دانش و فناوری هوافضا

طراحی کنترل پیش بین مدل مبتنی بر تیوب به منظورکنترل وضعیت یک ماهواره انعطاف پذیر

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشجوی کارشناسی ارشد، دانشکده فناوری‌های نوین، گروه فناوری ماهواره، دانشگاه علم و صنعت ایران
2 دانشیار، دانشکده مهندسی برق، گروه کنترل، دانشگاه علم و صنعت ایران
3 دانشجوی دکتری، دانشکده مهندسی برق، گروه کنترل، دانشگاه علم و صنعت ایران
چکیده
در یک ماهواره­ی انعطاف­پذیر، سیستم کنترل وضعیت باید قادر باشد ضمن تضمین عملکرد بالا، بر غیرخطی­گری­ها و نامعینی‌های ذاتی بدنه صلب و ملحقات انعطاف­پذیر و همچنین اغتشاشات خارجی فائق آید. علاوه بر آن، قابلیت اقنای قیود عملیاتی و فیزیکی در طراحی سیستم کنترل وضعیت و اتخاذ تصمیمات کنترلی با رویکردی بهینه با توجه به محدودیت­های منابع موجود در پروژه­های فضایی، از اهمیت بسیاری برخوردارند. به منظور برآورده‌سازی همزمان چنین اهدافی، در این مقاله به طراحی یک کنترل­کننده­ی پیش­بین مدل مبتنی بر تیوب به عنوان سیستم کنترل وضعیت ماهواره­ی انعطاف­پذیر پرداخته شده است. با انجام مطالعات شبیه­سازی، نشان داده شده است که سیستم کنترلی پیشنهادی طراحی شده بر اساس دینامیک خطی­سازی شده سیستم، به دلیل ویژگی­های ذاتی مجموعه­های تغییرناپذیر مقاوم خود قادر است تا علاوه بر تحمل اغتشاشات خارجی، غیرخطی­گری­ها و نامعینی­های ذاتی یک ماهواره­ی انعطاف­پذیر، قیود کنترلی تعریف شده را نیز برآورده سازد و به عملکرد کنترلی بالایی دست یابد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Designing a tube-based MPC to control the attitude of a flexible satellite

نویسندگان English

Sina Fakhri Far 1
Hossein bolandi 2
Mohammad Fathi 3
1 Control branch - School of Advanced Technologies - Iran University of Science and Technology - Tehran - Iran
2 Electrical Engineering Department - Iran University of Science and Technology - Theran - Iran
3 Electrical Engineering Department, Iran University of Science and Tecfhnology (IUST), Tehran, Iran
چکیده English

In a flexible satellite, the attitude control system must be able to overcome the inherent nonlinearities and uncertainties of the rigid body and flexible appendages, as well as external disturbances, while guaranteeing high performance. In addition, the capability of persuading the operational and physical constraints in the designed attitude control system and making control decisions with an optimal approach considering the limitations of the available resources in space projects are very important. In order to simultaneously meet such goals, this paper presents a tube-based model predictive controller as a flexible satellite attitude control system. Simulation studies have shown that the proposed control system designed based on the linearized dynamics of the system, due to the inherent properties of robustness of invariant sets, is capable of meeting the defined control constraints in addition to tolerating external disturbances, nonlinearities, and inherent uncertainties of a flexible satellite.

کلیدواژه‌ها English

attitude control of flexible satellite
tube-based robust model predictive control
Constrained optimization
robust invariant sets
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