Results 121 to 130 of about 48,344 (297)
CORRECTION TO HELMERT'S ORTHOMETRIC HEIGHT DUE TO ACTUAL LATERAL VARIATION OF TOPOGRAPHICAL DENSITY [PDF]
Revista Brasileira de Cartografia, 2003 Helmert (1890) used Poincaré-Prey's gravity gradient for the definition of the orthometric height. According to this approach the gravity value needed for the evaluation of the height is obtained from the observed gravity at the earth surface reduced to ...
Petr Vanícek, Robert Tenzer
doaj
Lenticular communication satellite with gravity-gradient stabilization
, 1965 Concepts and typical performance estimates of gravity gradient stabilized, lenticular passive communications ...
core
Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review
Advanced Robotics Research, EarlyView.Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang +14 more
wiley +1 more source
Gravity gradient momentum dumping and dynamics analysis
, 1967 Gravity gradient momentum dumping analysis, and conceptual design for Apollo telescope mount ...
Ingwerson, D.
core
Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots
Advanced Robotics Research, EarlyView.Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley +1 more source
Nonlocal Time-Gradient Gravity
This work is presented only as a theoretical framework, intended to outline the concept of Nonlocal Time-Gradient Gravity (NLTG). The detailed mathematical derivations, rigorous field equations, and quantitative comparisons with observational data are left for future work.
Huang, Jianheng +2 more
openaire +1 more source
Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter
Advanced Robotics Research, EarlyView.A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He +4 more
wiley +1 more source
Modeling of vertical gravity gradient for purposes of gravimetric survey
, 2023 The knowledge of the vertical gradient of the gravity field is of great importance in gravimetry and consequently in geodesy, since the gravity acceleration measured with the instrument must be reduced to a stabilized point.
Odalović, Oleg +2 more
core
Advanced Robotics Research, EarlyView.Robots can learn manipulation tasks from human demonstrations. This work proposes a versatile method to identify the physical interactions that occur in a demonstration, such as sequences of different contacts and interactions with mechanical constraints.
Alex Harm Gert‐Jan Overbeek +3 more
wiley +1 more source
GeomaticsOrthometric heights are practically determined from levelling and gravity measurements by applying orthometric corrections to levelled height differences.
Robert Tenzer +6 more
doaj +1 more source