کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8057531 1520056 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fault detection and isolation of satellite gyroscopes using relative positions in formation flying
ترجمه فارسی عنوان
تشخیص گسل و انزوا ژیروسکوپ های ماهواره ای با استفاده از موقعیت های نسبی در شکل گیری پرواز
کلمات کلیدی
تشخیص گسل، انزوا گسل، ژیروسکوپ ماهواره ای، شکل گیری پرواز،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
A fault detection and isolation method for satellite rate gyros is proposed based on using the satellite-to-satellite measurements such as relative position beside orbit parameters of the primary satellite. By finding a constant of motion, it is shown that the dynamic states in a relative motion are restricted in such a way that the angular velocity vector of primary satellite lies on a quadratic surface. This constant of motion is then used to detect the gyroscope faults and estimate the corresponding scale factor or bias values of the rate gyros of the primary satellite. The proposed algorithm works even in time variant fault situations as well, and does not impose any additional subsystems to formation flying satellites. Monte-Carlo simulations are used to ensure that the algorithm retains its performance in the presence of uncertainties. In presence of only measurement noise, the isolation process performs well by selecting a proper threshold. However, the isolation performance degrades as the scale factor approaches unity or bias approaches zero. Finally, the effect of orbital perturbations on isolation process is investigated by including the effect of zonal harmonics as well as drag and without loss of generality, it is shown that the perturbation effects are negligible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aerospace Science and Technology - Volume 78, July 2018, Pages 403-417
نویسندگان
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