Abstract
The paper introduces the mathematical model of rotor for active magnetic bearing reaction/momentum wheels, used as actuator in spacecraft attitude and orbit control system. Developed model is used for estimation of critical speeds and forced oscillation magnitudes with a glance of the rotor modes. Rotor is considered as a two-mass system, consisting of a shaft and a rim, active magnetic bearings are assumed to be a linear elastic springs. The equations of the rotor motion are derived using the Lagrange equation. Developed model is verified by comparing the calculated Campbell diagrams with the results of the finite-element modal analysis, performed in the ANSYS software.
Highlights
International Forum for Young Scientists “Space Engineering 2018”Mathematical model of a flexible asymmetrical rotor for active magnetic bearing reaction wheel
Continuous complication of tasks, performed by modern satellites requires the increasing of attitude and orbit control systems operating performance, primarily pointing accuracy and, what is important, pointing stability
reaction wheels (RW) rotor consists of the rotating parts of electric drive and active magnetic bearings (AMB), mounted on the flywheel
Summary
Mathematical model of a flexible asymmetrical rotor for active magnetic bearing reaction wheel. Miroslav Polyakov1,2,**, Anatoliy Lipovtsev, Vladimir Lyanzburg Stock Company «Scientific & Industrial Centre «Polyus», 634050 Tomsk, Russia 2 National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
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