Results 21 to 30 of about 1,825,811 (307)
Attitude control of a tethered spacecraft
Proceedings of the 2003 American Control Conference, 2003., 2004 An attitude control problem for a tethered spacecraft is studied. The tethered spacecraft is viewed as a multi-body spacecraft consisting of a base body, a massless tether that connects the base body and an end mass, and tether actuator dynamics. Moments about the pitch and roll axes of the base spacecraft arise by control of the point of attachment of
Sangbum Cho, N. Harris McClamroch
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IEEE Access, 2020 This article investigates the trajectory tracking problem of quadrotor formation with collision avoiding. The safety distributed control strategy is introduced for quaternion-based multiple quadrotors formation to avoid collision.
Guowei Zhang +4 more
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Attitude Control of Two-Wheel Spacecraft Based on Dynamics Model via Hierarchical Linearization
SICE Journal of Control, Measurement, and System Integration, 2017 In this paper, we propose an attitude control law for underactuated two-wheel spacecraft under non-zero total angular momentum. Attitude control with non-zero total angular momentum is complicated in the case that the number of reaction wheels equipped ...
Tomohiro Fukaishi +2 more
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Aerospace, 2021 Nonlinear flight controllers for fixed-wing unmanned aerial vehicles (UAVs) can potentially be developed using deep reinforcement learning. However, there is often a reality gap between the simulation models used to train these controllers and the real ...
Daichi Wada +2 more
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Drag-free and attitude control for the GOCE satellite [PDF]
, 2008 The paper concerns Drag-Free and Attitude Control of the European satellite Gravity field and steady-state Ocean Circulation Explorer (GOCE) during the science phase.
Aguirre-Martinez +13 more
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APPLE MAGNETIC ATTITUDE CONTROL (AMAC) — A NEW ATTITUDE CONTROL CONCEPT
IFAC Proceedings Volumes, 1979 Abstract A novel closed loop magnetic attitude control scheme for momentum biased, near equatorial orbit satellites is described. Unlike the other schemes proposed so far, the controller presented here performs both the attitude correction and nutation damping, thus obviating the need for a seperate nutation damping mechanism.
P.S. Goel, S. Rajaram
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Adaptive tracking control of flapping wing micro-air vehicles with averaging theory
CAAI Transactions on Intelligence Technology, 2018 An input constrained adaptive tracking controller is designed for flapping micro aerial vehicles, wherein the moving averaging filter is adopted to estimate the averaged states of the system.
Chen Qian, Yongchun Fang
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IET Control Theory & Applications, 2023 This paper investigates the prescribed performance fault‐tolerant attitude tracking control for flexible spacecraft under limited communication network, where the controller and the actuator are connected via wireless network. The hysteresis quantizer is
Ming Liu +3 more
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Spacecraft magnetic attitude control using approximating sequence Riccati equations [PDF]
, 2015 This paper presents the results of a spacecraft attitude control system based on magnetic actuators designed for low Earth orbits. The control system is designed by using a nonlinear control technique based on the approximating sequence of Riccati ...
Bernelli Zazzera, Franco +2 more
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Optimal Magnetic Attitude Control
IFAC Proceedings Volumes, 1999 Magnetic torquing is attractive as means of control for small satellites. The actuation principle is to use the interaction between the earth's magnetic field and a magnetic field generated by a coil set in the satellite. This control principle is inherently time-varying, and difficult to use because control torques can only be generated perpendicular ...
Wisniewski, Rafal, Markley, F.L.
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