Results 91 to 100 of about 4,910 (302)

Modeling and Contact Analysis of Internal Meshing Nutation Spiral Bevel Gear with Different Tooth Profiles based on General Tooth Surface Model

open access: yesJixie chuandong, 2020
The derivation process of the tooth surface mathematical model of the internal meshing spiral bevel gears for nutation drive is complex. In order to establish different tooth profiles of the spiral bevel gears and carry out load contact analysis, the ...
Zheng Lin, Ligang Yao
doaj  

Physics of gyroscope nutation

open access: yesAIP Advances, 2019
The known publications of the gyroscope property of maintaining its axis are represented by simplified mathematical models formulated on the law of kinetic energy conservation and the action of an inertial torque expressed by the change in the angular ...
R. Usubamatov
doaj   +1 more source

Nutation damping in a dual-spin spacecraft

open access: yes, 1981
A dual-spin spacecraft having a momentum wheel spinning relative to a platform to provide bias momentum utilizes cross products of inertia (POI) existing in the platform between the spinning axis and the transverse axes to achieve nutation damping.
Phillips, Kevin J.
core  

Geometric phase in inhomogeneous optical nutation

open access: yes, 2015
Optical nutation and its geometric phase are investigated in terms of an inhomogeneous Bloch equation with a constant term. The analytic solution of optical nutation is obtained by mapping it onto a Bloch sphere structure.
Yanxia Yu   +4 more
core   +1 more source

A Multimodal Laser‐Induced Graphene‐Based Flexible Sensor for Soft Robotic Hand Environmental Perception

open access: yesAdvanced Intelligent Systems, EarlyView.
A multimodal laser‐induced graphene (LIG)‐based flexible sensor is developed to detect proximity and contact signals. Integrated into a soft robotic hand, it enables vision‐free object searching and grasping. Combined with a convolutional neural network, the system achieves accurate material and texture recognition, enhancing the capability of ...
Youning Duo   +9 more
wiley   +1 more source

Observed and Theoretical Values of the Nutations [PDF]

open access: yesInternational Astronomical Union Colloquium, 1971
We are here concerned with the nutations that appear in the motion of the Earth because of the existence of the external forces due to the Sun and Moon, that is, the forced nutations.We can consider the nutations divided in two groups from the point of view of their values and the precision attained by astronomical observations.
openaire   +1 more source

On new terms of second order nutation [PDF]

open access: yes, 1903
The author calculates a new determination of the nutation and aberration constants in considering the systematic aberration.L’auteur calcule une nouvelle détermination des constantes de la nutation et de l’aberration en tenant compte de l’aberration ...
Folie, François
core  

Speckle Skin‐Based Multimodal Tactile Perception for Fine Robotic Manipulation

open access: yesAdvanced Intelligent Systems, EarlyView.
SpeckleTac, a miniature vision‐based tactile sensor, utilizes a speckle‐pattern skin and optical flow‐based scalable virtual marker tracking. Combined with advanced algorithms, it achieves high‐resolution 3D surface reconstruction, precise contact perception, and stable grasping capabilities.
Jiayuan Zhang   +6 more
wiley   +1 more source

Analysis of Natural Characteristics of the Dual-Path Nutation Face Gear Transmission System

open access: yesApplied Sciences
The nutation face gear transmission combines the high contact ratio of face gears with the large reduction ratio of nutation drives, making it a promising transmission solution.
Yuxin Wang   +6 more
doaj   +1 more source

Modeling of nutation-precession: new nutation series for nonrigid Earth, and insights into the Earth's interior

open access: yes, 2002
The analytical formulation of the theories of nutation and wobble reveals the combinations of basic Earth parameters that govern the nutation-wobble response of the Earth to gravitational (tidal) forcing by heavenly bodies and makes it possible to ...
Herring, T. A.   +5 more
core   +1 more source

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