Results 81 to 90 of about 146,444 (294)

Self-Gradient Compensation of Full-Tensor Airborne Gravity Gradiometer

Sensors, 2019
In the process of airborne gravity gradiometry for the full-tensor airborne gravity gradiometer (FTAGG), the attitude of the carrier and the fuel mass will seriously affect the accuracy of gravity gradiometry.
Xuewu Qian, Yanhua Zhu
doaj   +1 more source

Investigation of the mode of compensation of Venus topography [PDF]

The Venus gravity data derived from the Pioneer Venus Orbiter indicates a strong correlation of gravity to topography at all resolvable wavelengths. Focus was on an analysis in the spatial domain, using a geophysical model of topographic compensation ...
Morgan, Paul
core   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Further SEASAT SAR coastal ocean wave analysis [PDF]

Analysis techniques used to exploit SEASAT synthetic aperture radar (SAR) data of gravity waves are discussed and the SEASAT SAR's ability to monitor large scale variations in gravity wave fields in both deep and shallow water is evaluated.
Jackson, P. L., Kasischke, E. S., Meadows, G. A., Shuchman, R. A., Tseng, Y.   +4 more
core   +1 more source

Primordial Adiabatic Fluctuations from Cosmic Defects [PDF]

, 2000
We point out that in the context of ``two-metric'' theories of gravity there is the possibility that cosmic defects will produce a spectrum of primordial adiabatic density perturbations. This will happen when the speed characterising the defect-producing
A. Albrecht, A. Albrecht, A. Albrecht, A. D. Linde, A. D. Linde, A. D. Linde, A. J. Banday, A. Liddle, A. Vilenkin, B. Carter, C. Contaldi, C. J. A. P. Martins, C. J. A. P. Martins, C. J. A. P. Martins, D. Salopek, E. W. Kolb, J. Barrow, J. D. Barrow, J. D. Barrow, J. Magueijo, J. Pando, J. Robinson, J. W. Moffat, L. Kofman, M. A. Clayton, M. A. Clayton, N. Turok, N. Turok, P. Ferreira, P. P. Avelino, P. P. Avelino, P. P. Avelino, P. P. Avelino, P. P. Avelino, P. P. Avelino, R. A. Battye, S. Veeraraghavan, W. Hu, Y. Hu   +38 more
core   +2 more sources

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Influence of the Coriolis force in atom interferometry

, 2012
In a light-pulse atom interferometer, we use a tip-tilt mirror to remove the influence of the Coriolis force from Earth's rotation and to characterize configuration space wave packets.
Brian Estey, Holger Müller, J. M. Hogan, Pei-Chen Kuan, Philipp Haslinger, Shau-Yu Lan   +5 more
core   +1 more source

Backpropagation Through Soft Body: Investigating Information Processing in Brain–Body Coupling Systems

Advanced Robotics Research, EarlyView.
This study explores how information processing is distributed between brains and bodies through a codesign approach. Using the “backpropagation through soft body” framework, brain–body coupling agents are developed and analyzed across several tasks in which output is generated through the agents’ physical dynamics.
Hiroki Tomioka, Katsuma Inoue, Yasuo Kuniyoshi, Kohei Nakajima   +3 more
wiley   +1 more source

Gravity compensation of a 6-UPS parallel kinematics machine tool through elastically balanced constant-force generators [PDF]

FME Transactions, 2018
Gravity compensation is a viable strategy to improve the performance of manipulators, particularly in terms of power consumption. This work studies the static balancing of a prototypal 5-axis parallel kinematics machine tool with UPS-legs.
Martini Alberto
doaj