Results 21 to 30 of about 213,618 (168)
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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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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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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IEEE Access, 2019 In this paper, an adaptive nonsingular terminal sliding mode control (ANTSMC) is investigated for attitude tracking of spacecraft with actuator faults. First, a nonsingular fast terminal sliding mode surface is designed to avoid the singularity.
Chenghu Jing +3 more
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Safety-Aware Optimal Attitude Pointing for Low-Thrust Satellites
Applied Sciences, 2021 In geostationary orbit, long eclipses and the seasonal variations in the direction and intensity of the solar input can cause damage to sensitive equipment during attitude maneuvers, which may inadvertently point the equipment towards the Sun.
Helen Henninger +2 more
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Magnetic attitude control for satellites [PDF]
2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601), 2004 In this paper it is proven that three-axis stabilization of satellites using magnetorqers is uniformly globally asymptotically stable (UGAS). The application of Matrosovs theorem allows for removal of the assumption that the geomagnetic (internal and external) field is periodic in order to establish this stability result.
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Family of controllers for attitude synchronization on the sphere [PDF]
Automatica, 2017 In this paper we study a family of controllers that guarantees attitude synchronization for a network of elements in the unit sphere domain, i.e. $\mathcal{S}^2$. We propose distributed continuous controllers for elements whose dynamics are controllable (i.e. control with torque as command), and which can be implemented by each individual agent without
Pereira, Pedro O., Dimarogonas, Dimos V.
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AerospaceMicrosatellites have significantly impacted space missions by offering advanced technology at a low cost. This study introduces an attitude determination and control algorithm for agile whiskbroom scanning maneuvers in microsatellites to enable wide ...
Xinyan Yang +3 more
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