کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8055453 1519904 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linear time-varying model predictive control of magnetically actuated satellites in elliptic orbits
ترجمه فارسی عنوان
کنترل های پیش بینی شده مدل خطی ماهواره های فعال مغناطیسی در مدارهای بیضوی
کلمات کلیدی
کنترل نگرش، کنترل پیش بینی مدل، لرزش مغناطیسی، مدار بیضوی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
Three-axis attitude control using only magnetic actuators has been considered a difficult task due to earth's time-varying magnetic field, the inherent under-actuation associated with this task, and constraints on control dipole moments. In this study, a linear time-varying model predictive control approach is applied to magnetically actuated satellites in elliptic low-earth orbits for nadir and inertial pointing. A linear time-varying model predictive control problem is formulated using an augmented state-space model based on small-angle approximations for both nadir and inertial-pointing nonlinear dynamics models. To reduce the on-line computational load, the model predictive control design for an inertial-pointing problem with Laguerre functions is proposed, and exponential data weighting is used to improve the numerically ill-conditioned problem. Nonlinear simulation results demonstrate the effectiveness of the proposed method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 151, October 2018, Pages 791-804
نویسندگان
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