طراحی و ساخت مکانیزمهای حرکتی آنتن یک ماهواره مخابراتی

نوع مقاله : مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسنده

استادیار گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه قم، قم، ایران

چکیده

در این مقاله مراحل طراحی و شبیه سازی نمونه مهندسی مکانیزم رهاسازی و گسترش آنتن یک ماهواره مخابراتی شرح داده شده است. به دلیل سادگی و همچنین دسترسی به قابلیت اطمینان بیشتر از سیستم فنر پیچشی برای تحریک آنتن استفاده شده است. در ابتدا گشتاور تحریک مکانیزم گسترش محاسبه شده و متناسب با آن فنر و میراکننده مناسب برای مکانیزم انتخاب شده است. همچنین جهت قفل کردن مکانیزم در موقعیت نهایی خود از پین فنردار و برای مکانیزم رهایش آنتن از مکانیزم بُرشگر حرارتی استفاده شده است که در آزمون‌های انجام شده عملکرد مناسبی نشان می‌دهد. شبیه‌سازی دینامیکی توسط نرم‌افزار Adams روی سیستم انجام و جهت اطمینان از استحکام سازه‌ای مکانیزم، تحلیلهای عددی اجزاء محدود توسط نرم‌افزار Nastran-Patran انجام گرفته است. با توجه به نتایج شبیه‌سازی به دست آمده، می‌توان گفت که این مکانیزم یک مکانیزم ساده، کاربردی و قابل اطمینان بوده و می‌تواند وظایف محوله را به خوبی انجام دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Design and manufacturing of the antenna motion mechanisms of a communication satellite

نویسنده [English]

  • Mohammad Salari
Assistant Professor, Department of Mechanical Engineering, Faculty of Engineering, Qom University, Qom, IRAN
چکیده [English]

In this paper, design and simulation of a deployment and release mechanism of a communication satellite antenna are described. Because of the simplicity and reliability of the system, a torsion spring is used to excite the antenna. Dynamic simulation is performed by Adams Software and the appropriate spring and damper are selected for the mechanism. Also, a thermal cutter mechanism is used for the release mechanism of the antenna that shows a good performance in the tests. Also, a finite element analysis is performed to ensure the structural strength of the mechanism by Nastran-Patran Software. According to the results of the tests and simulations performed on the system, one can say that this mechanism is a simple, functional and reliable mechanism and can be done well the assigned duties in accordance with the requirements of the employer and the ECSS standard.

کلیدواژه‌ها [English]

  • Satellite Antenna
  • Deployment Mechanism
  • Release Mechanism
  • Dynamic simulation
  • FEA
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