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This paper presents a study of the large angle maneuvers and high-accuracy attitude control of a small satellite which uses a variable inertia reaction wheel(VIRW). Based on the traditional kinetic model of a reaction wheel, a kinetic model of a VIRW with three-axis orthogonal variable inertia is established which takes rotational inertia as the physical variable. A characteristics model of the small...
An energy-saving train operation is theoretically studied in this paper. Case studies for showing trade-off relationship between train running time and energy consumption are numerically calculated and compared for minimizing energy through optimal time allocations among multiple inter-station sections. Effects of payload on the optimized results are carefully discussed in the study.
Generically speaking, non-standard analysis is any form of mathematics that relies on non-standard models and the transfer principle. However, it is likely safe to say that of the most common meaning for the term "Non-Standard Analysis" is a rigorous formulation of Analysis using infinitesimals, as an alternative to the analysis we all know in the e-δ formulation.
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