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36 results on '"Doroshin, Anton V."'

27. Attitude control of nanosatellite with single thruster using relative displacements of movable unit.

Author

Doroshin, Anton V and Eremenko, Alexander V

Subjects
ARTIFICIAL satellite attitude control systems, JET engines, CENTER of mass, TORQUE control, ATTITUDE (Psychology)
Abstract

The attitude dynamics of a nanosatellite (NS) with one movable unit changing its angular position relative to a main body of the nanosatellite is considered. This relative movability of the unit can be implemented with the help of flexible rods of variable length connecting the unit with the main body. Change of the relative position of the movable unit shifts the center of mass of the entire mechanical system. The NS has a single jet engine rigidly mounted into the NS main body. The shift of the mass center creates an arm of the jet-engine thrust and a corresponding control torque. Schemes to control the attitude dynamics of the satellite using the movability of its unit are developed, using both the torque from the engine and inertia change. [ABSTRACT FROM AUTHOR]

Published
2021
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35. Attitude Control of Spider-type Multiple-rotor Rigid Bodies Systems.

Author

Doroshin, Anton V.

Subjects
*ROTORS, *ROTATIONAL motion, *SIMPLE machines, *WHEELS, *MOTION
Abstract

This paper sets out to develop a new multiple-rotor system which can be used for attitude control of spacecraft. Unlike typical attitude control devices the new multirotor system has no disadvantages of reaction wheels, on the contrary, it possesses the advantages of a control moment gyroscope. The paper describes a new method of attitude reorientation of spacecraft with the help of the multirotor system. New multirotor system contains a lot of rotor-equipped rays, so it was called a "Rotor-type Spider" or a "Rotor-type Hedgehog". These systems allow using spinups and captures of conjugate rotors to perform compound attitude motion of spacecraft. [ABSTRACT FROM AUTHOR]

Published
2009

36. Modeling of chaotic motion of gyrostats in resistant environment on the base of dynamical systems with strange attractors

Author

Doroshin, Anton V.

Subjects
*GYRO compass, *POINCARE series, *ANGULAR momentum (Mechanics), *LYAPUNOV exponents, *FOURIER transforms, *ATTRACTORS (Mathematics), *CHAOS theory, *PHASE space, *LORENZ equations
Abstract

Abstract: A chaotic motion of gyrostats in resistant environment is considered with the help of well known dynamical systems with strange attractors: Lorenz, Rössler, Newton–Leipnik and Sprott systems. Links between mathematical models of gyrostats and dynamical systems with strange attractors are established. Power spectrum of fast Fourier transformation, gyrostat longitudinal axis vector hodograph and Lyapunov exponents are find. These numerical techniques show chaotic behavior of motion corresponding to strange attractor in angular velocities phase space. Cases for perturbed gyrostat motion with variable periodical inertia moments and with periodical internal rotor relative angular moment are considered; for some cases Poincaré sections areobtained. [Copyright &y& Elsevier]

Published
2011
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