Results 1 to 10 of about 379,882 (307)
IET Control Theory & Applications, 2023 The performance of the gimbal servo system in control moment gyro (CMG), which includes precision, lifespan etc., is one of the crucial factors of spacecraft attitude control.
Yangyang Cui +3 more
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Active Vibration Control of a Large Flexible Appendage Using a Novel Joint Mechanism
Shock and Vibration, 2022 With the evolution of space exploration, large flexible appendages have been developed in space structures. External perturbation or attitude maneuvering stimulates the vibration (low frequencies) of the aforementioned structures.
Wei Hu +8 more
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iScience, 2023 Summary: The space gravitational wave detection mission requires a super ''static and precise'' scientific experiment environment. In order to solve the non-conservative force disturbance variation and the actuator noise and measurement noise, this paper
Junjie Zhou, Aiping Pang, Hongbo Zhou
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IET Control Theory & Applications, 2023 In this article, the optimal attitude consensus control problem of distributed spacecraft formation through local information exchange is solved in the presence of parameter uncertainty and disturbance.
Hui Wang +4 more
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IET Control Theory & Applications, 2023 An accurate description of the relative motion of satellites is critical for space missions in the complex geostationary earth orbit space environment. Here, a new relative motion model is established considering major perturbations.
Dali Zhang +4 more
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Design and simulation of the accumulator for servomechanisms of launch vehicle
The Journal of Engineering, 2020 The accumulator is a crucial component of the hydraulic power for servomechanisms of the launch vehicle, which has a significant effect on the performance and the mass power. Traditional design methods are mostly based on empirical formulas, which do not
Bo Zheng +5 more
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CONSTRUCTION AND TEST OF BIO-INSPIRED IMAGING POLARIZATION NAVIGATION PROTOTYPE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Bio-inspired polarization navigation is a promising navigation method inspired by insects’ autonomous foraging and homing behaviour. Many insects acquire their spatial orientation by sensing the polarization pattern of the skylight.
H. Lu +6 more
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Error Dynamics Based Dual Heuristic Dynamic Programming for Self-Learning Flight Control
Applied Sciences, 2022 A data-driven nonlinear control approach, called error dynamics-based dual heuristic dynamic programming (ED-DHP), is proposed for air vehicle attitude control. To solve the optimal tracking control problem, the augmented system is defined by the derived
Xu Huang +5 more
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Driving and tilt‐hovering – An agile and manoeuvrable aerial vehicle with tiltable rotors
IET Cyber-systems and Robotics, 2021 Driving and tilt‐hovering help unmanned aerial vehicles extend their time of operation and the visible range of the equipped sensors. Standard quadrotors are underactuated, whose translational and rotational motions are strongly coupled.
Binbin Li, Lei Ma, Duo Wang, Yongkui Sun
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Influence of Pre-Radiation and Photo-Bleaching on the Yb-Doped Fiber Laser Radiated with Gamma-ray
Applied Sciences, 2023 To improve the radiation resistance of Yb-doped fiber lasers, we investigate the influence of pre-radiation and photo-bleaching on the gamma-radiated laser’s performance. When the gamma radiation dose is within 10 krad(Si) with a radiation dose rate less
Xuefeng Wang +6 more
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