Results 131 to 140 of about 656,999 (330)

Ground controlled robotic assembly operations for Space Station Freedom [PDF]

open access: yes
A number of dextrous robotic systems and associated positioning and transportation devices are available on Space Station Freedom (SSF) to perform assembly tasks that would otherwise need to be performed by extravehicular activity (EVA) crewmembers.
Parrish, Joseph C.
core   +1 more source

Investigation of Techniques for Simulating Communications and Tracking Subsystems on Space Station Freedom [PDF]

open access: yes, 1991
The need to reduce the costs of Space Station Freedom has resulted in a major redesign and downsizing of the Station in general, and its Communications and Tracking (C&T) components in particular. Earlier models and simulations of the C&T Space-to-Ground
Deacetis, Louis A.
core   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang   +8 more
wiley   +1 more source

A Tolerance Type Screening Method Based on Similarity Evaluation

open access: yesApplied Sciences
In the context of automatic generation methods for tolerance specifications, the current approach entails designers subjectively selecting geometric tolerances suitable for annotation from the tolerance types generated through automatic reasoning.
Guanghao Liu, Meifa Huang, Zhemin Tang
doaj   +1 more source

Piezoceramics-based Devices for Active Balancing of Flexible Shafts [PDF]

open access: yes, 2006
This paper focuses on vibration control of flexible shafts by means of rotorfixed piezoelectric materials. The target is to realize compact solutions for the suppression of problematic resonant vibration at so-called flexural critical speeds.
Boer, A. de, Sloetjes, P.J.
core   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz   +2 more
wiley   +1 more source

Printed Organic Thermoelectric Generators: Progress and Challenges Towards Efficient Energy Harvesting

open access: yesAdvanced Materials Technologies, EarlyView.
Printed organic thermoelectric generators (OTEGs) enable flexible and sustainable energy harvesting from low‐grade heat. This Perspective critically assesses recent advances in printable thermoelectric materials, 2D and 3D device architectures, and current performance limits of printed OTEGs.
Vijitha Ignatious   +5 more
wiley   +1 more source

Joint-space adaptive control of a 6 DOF end-effector with closed-kinematic chain mechanism [PDF]

open access: yes
The development is presented for a joint-space adaptive scheme that controls the joint position of a six-degree-of-freedom (DOF) robot end-effector performing fine and precise motion within a very limited workspace.
Nguyen, Charles C., Zhou, Zhen-Lei
core   +1 more source

In Situ Copper Electroplating Turns Material Extrusion 3D Printers Into Metal–Polymer Hybrid Fabricators

open access: yesAdvanced Materials Technologies, EarlyView.
An in situ electroplating approach for MEX 3D printing is proposed, enabling copper deposition during the fabrication of conductive polymers. The method combines a printer‐integrated plating head, ML‐based g‐code control, and stop‐and‐go printing, achieving near‐bulk copper conductivity and enabling fully embedded, assembly‐free electronic components ...
Gianluca Percoco   +5 more
wiley   +1 more source

Technology development, demonstration, and orbital support requirements for manned lunar and Mars missions [PDF]

open access: yes
An overview of the critical technology needs and the Space Station Freedom (SSF) focused support requirements for the Office of Exploration's (OEXP) manned lunar and Mars missions is presented.
Brender, Karen D., Llewellyn, Charles P.
core   +1 more source

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