Results 61 to 70 of about 1,938 (262)

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

Benchmark Problems for Spacecraft Formation Flying Missions [PDF]

AIAA Guidance, Navigation, and Control Conference and Exhibit, 2003
To provide high-level focus to distributed space system flight dynamics and control research, several benchmark problems are suggested. These problems are not specific to any current or proposed mission, but instead are intended to capture high-level features that would be generic to many similar missions.
J Russell Carpenter, Jesse Leitner, David Folta, Richard Burns   +3 more
openaire   +1 more source

Satellite formation flying for an interferometry mission [PDF]

, 2005
The autonomous formation flying of multiple spacecraft to replace a single large satellite will be an enabling technology for many future missions. In this research, the current status of formation flying missions and technologies is determined, and ...
Roberts, Jennifer A.
core   +1 more source

Small spacecraft formation-flying using potential functions [PDF]

, 2008
A group of small spacecraft able to change its orbital formation through using the potential function is discussed. Spacecraft shapes, sizes and manoeuvering capabilities in general are not identical.
Ahmed Badawy, Colin R. McInnes, Badawy, Ahmed, McInnes, Colin R., McInnes, C.R.   +4 more
core   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

SmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen, Zeyuan Huang, Ying Yan, Xiaokang An, Zhikai Zhao, Jirong Lin, Xiangrong Zhao, Xianyuan Gao, Junyi Zong, Xuewen Jia, Zhipeng Yao, Jianliang Liao, Ning Ji   +12 more
wiley   +1 more source

Decentralized attitude synchronization of spacecraft formations under complex communication topology

Advances in Mechanical Engineering, 2016
The attitude synchronizing of formation flying spacecrafts is an essential ingredient in almost all practical situations. However, thus far no control scheme was proposed for synchronizing the attitude of multiple spacecraft without a prescribed ...
Zhipeng Wang, Zhaowei Sun, Xiande Wu, Haichao Liang, Jianying Wang   +4 more
doaj   +1 more source

A hardware-in-the-loop testbed for spacecraft formation flying applications [PDF]

2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542), 2002
The Formation Flying Test Bed (FFTB) at NASA Goddard Space Flight Center (GSFC) is being developed as a modular, hybrid dynamic simulation facility employed for end-to-end guidance, navigation, and control (GNC including a high-fidelity GPS simulator which has been a fundamental component of the Guidance, Navigation, and Control Center's GPS Test ...
openaire   +2 more sources

Manoeuvre Planning Architecture for the Optimisation of Spacecraft Formation Flying Reconfiguration Manoeuvres [PDF]

, 2010
Formation flying of multiple spacecraft collaborating toward the same goal is fast becoming a reality for space mission designers. Often the missions require the spacecraft to perform translational manoeuvres relative to each other to achieve some ...
Burgon, Ross
core  

Angles-only Navigation to a Non-Cooperative Satellite using Relative Orbital Elements [PDF]

, 2012
This work addresses the design and implementation of a prototype relative navigation tool that uses camera-based measurements collected by a servicer spacecraft to perform far- range rendezvous with a non-cooperative client in low Earth orbit.
S. D'amico, Ardaens, J.-S., Gaias, Gabriella, J-S Ardaens, D'Amico, Simone, G. Gaias   +5 more
core   +1 more source

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

Symbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz, Leslie DeChurch, Noshir Contractor   +2 more
wiley   +1 more source