Results 31 to 40 of about 1,419,907 (265)

A Fibonacci control system with application to hyper-redundant manipulators [PDF]

Mathematics of Control, Signals, and Systems, 2016
We study a robot snake model based on a discrete linear control system involving Fibonacci sequence and closely related to the theory of expansions in non-integer bases. The present paper includes an investigation of the reachable workspace, a more general analysis of the control system underlying the model, its reachability and local controllability ...
LAI, ANNA CHIARA, LORETI, Paola, VELLUCCI, PIERLUIGI   +2 more
openaire   +6 more sources

Manipulation of a Pneumatic Hyper-Redundant Actuator

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2011
Pneumatically controlled and actuated planar snake-like device has been developed. Each joint is controlled by hardware-implemented algorithm inspired by snake's lateral undulatory locomotion. Therefore the device progresses forward whenever the lateral movement is constrained, such as a winding groove by which the tip element is guided.
DATE, Hisashi, TAKITA, Yoshihiro
openaire   +2 more sources

Continuum Robots in Surgery: From Engineering Design to Clinical Practice

Advanced Robotics Research, EarlyView.
The hyper‐redundant nature of continuum robot structures enables near‐infinite degrees of freedom leading to immense potential for medical applications. This review provides a historical background of continuum robots and novel ideas shaping their progress to current structural design, sensing technology, modeling techniques, and control methods.
Griffin Smith, Kaitlyn Clancy, Siwen Xie, Xiaochen Li, Sarah Khalife, Benjamin van der Woerd, Onaizah Onaizah   +6 more
wiley   +1 more source

Segmented Hybrid Impedance Control for Hyper-Redundant Space Manipulators

Applied Sciences
Hyper-redundant space manipulators (HRSMs), with their extensive degrees of freedom, offer a promising solution for complex space operations such as on-orbit assembly and manipulation of non-cooperative objects.
Mohamed Chihi, Chourouk Ben Hassine, Quan Hu   +2 more
doaj   +1 more source

An obstacle avoidance algorithm for space hyper-redundant manipulators using combination of RRT and shape control method

, 2021
This paper proposes a kinematic obstacle avoidance algorithm for Space hyper-redundant manipulators, and its basic idea is to use a static and a dynamic curve to constrain the macroshape of the manipulators simultaneously. The static curve is constructed
Liu, Jinguo, Zhang, Xiaobo, Li, Yangmin, Jinguo Liu, Xiaobo Zhang, Yangmin Li   +5 more
core   +1 more source

Robotics in Ionizing Radiation Environments: Vulnerabilities, Hardening, and Future Directions

Advanced Robotics Research, EarlyView.
Radiation exposure causes cumulative degradation in robotic sensors, actuators, and electronic logic, often leading to undetected failures. This study maps component vulnerabilities, evaluates hardening and shielding strategies, and identifies testing gaps that must be addressed to enable next‐generation radiation‐tolerant robotic systems.
Francis A. K. Djirackor, Josephine T. Djirackor, Amanuel Abrdo Tereda, Sun Yi, Younho Seong   +4 more
wiley   +1 more source

A Bidirectional Human-Machine Control Interface Based on Virtual Fixtures for Safe Teleoperation of Hyper-Redundant Robots

IEEE Access
In confined and hazardous environments where human access is severely limited, hyper-redundant manipulators play a crucial role in preserving operator safety and mitigating operational risks. Their numerous degrees of freedom and compact design make them
Ludovica Capodivento, Tommaso Borzone, Tiberio Grasso, Clemente Lauretti   +3 more
doaj   +1 more source

Supramolecular Zinc–Polyphenol Coordination Assemblies Mitigate Colonic Inflammation by Regulating Mucosal Barrier and Microbiome

Advanced Science, EarlyView.
A carrier‐free zinc‐coordinated polyphenol nanoplatform (ZnCA NPs) is designed as an “all‐in‐one” therapeutic strategy for intestinal inflammation. The ZnCA NPs exhibit enhanced colonic accumulation and broad‐spectrum reactive oxygen and nitrogen species scavenging.
Qiwen Xie, Mai Ye, Xuexia Liu, Jing Wang, Ying Chen, Lu Tan, Jinheng Fu, Xiaochang Huang   +7 more
wiley   +1 more source

TNAP and PHOSPHO1 Function Synergistically to Afford Critical Control Over the Mineralization of the Postnatal Murine Skeleton

Advanced Science, EarlyView.
Biomineralization underpins skeletal development, yet its molecular control remains incompletely understood. Using a novel murine knockout model, this study reveals the essential and complementary roles of PHOSPHO1 and TNAP in postnatal skeletal development.
Lucie E. Bourne, Aikta Sharma, Scott Dillon, Jacob Keen, Soher N. Jayash, Natalie Crump, Lucinda A.E. Evans, Maya Karmali, Worachet Promruk, Claire E. Clarkin, Sonoko Narisawa, Louise Stephen, Brian L. Foster, José Luis Millán, Colin Farquharson, Katherine A. Staines   +15 more
wiley   +1 more source

A trajectory planning algorithm for redundant manipulators

Redundant manipulators have some advantages when compared with classical arms because they allow the trajectory optimization, both on the free space and on the presence of obstacles, and the resolution of singularities.
Duarte, Fernando B. M., Horváth, László, Tenreiro Machado, J. A., J.A.T. Machado, L. Horvath, F.B.M. Duarte   +5 more
core   +2 more sources