Results 71 to 80 of about 96,824 (252)

Robust Optimal Control for Cable-Driven Parallel Robots via Event-Triggered ADP

IEEE Access
Based on adaptive dynamic programming (ADP) method and the event-triggered mechanism, this paper proposes a robust control method for the cable-driven parallel robots (CDPRs) with external disturbances and cable tension constraint.
Yingbo Lu, Pengfei Li, Ao Huang, Yilong Shen, Xingyu Wang   +4 more
doaj   +1 more source

Rotational Workspace Expansion of a Planar CDPR with a Circular End-Effector Mechanism Allowing Passive Reconfiguration

Robotics, 2019
Cable-Driven Parallel Robots (CDPR) operate over a large positional workspace and a relatively large orientation workspace. In the present work, the expansion of the orientation Wrench Feasible Workspace (WFW) in a planar four-cable passive ...
Marco Alexander Carpio Alemán, Roque Saltaren, Alejandro Rodriguez, Gerardo Portilla, Juan Diego Placencia   +4 more
doaj   +1 more source

Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s

Advanced Functional Materials, EarlyView.
Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu, Xiaofeng Zheng, Shaoxia Zhang, Long Xu, Meng Liu, Jeremy Baribeault St‐Germain, Yue Zhao   +6 more
wiley   +1 more source

Robot cable-compliant devices [PDF]

, 1990
A cable compliant robotic joint includes two U configuration cross section brackets with their U cross sections lying in different planes, one of their brackets being connected to a robot arm and the other to a tool.
Kerley, James J., Jr.
core   +1 more source

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

Advanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan, Mohammad Mehrali, Jaka Tušek, Shiva Mohajerani, Xiebin Wang, Dermot Brabazon, Mohammad Elahinia, Mehrshad Mehrpouya   +7 more
wiley   +1 more source

Index to NASA Tech Briefs, January - June 1966 [PDF]

, 1966
Index to NASA technological innovations for January-June ...

core   +1 more source

Complexation‐Mediated Diffusion‐Limited Crystal Growth: A General Framework for Anisotropic Crystal Growth in Cu‐Based Perovskites

Advanced Functional Materials, EarlyView.
A Complexation‐Mediated Diffusion‐Limited Growth (CMDLG) framework is established to rationalize the anisotropic growth of lead‐free perovskites. Integrating coordination chemistry with mass transport kinetics, this study theoretically derives and experimentally validates that stable iodocuprate complexes induce a diffusion‐limited regime.
Hyunmin Lee, Mu Geun Son, Thanh Van Vu, Hokyeong Jeong, Joonhee Kang, Youngjong Kang   +5 more
wiley   +1 more source

Dynamics and thermalization of the nuclear spin bath in the single-molecule magnet Mn12-ac: test for the theory of spin tunneling

, 2007
The description of the tunneling of a macroscopic variable in the presence of a bath of localized spins is a subject of great fundamental and practical interest, and is relevant for many solid-state qubit designs.
A. Abragam, Andrea Morello, C. P. Slichter, C. Paulsen, G. Christou, I. Chiorescu, L. J. de Jongh, M. Goldman, M. Soler, S. M. J. Aubin, T. Goto, T. Goto, T. Kubo, T. Lis, Yu. Kagan, Z. Sun   +15 more
core   +1 more source

Multibit Ferroelectric HfZrO Memcapacitor for Non‐Volatile Analogue Memory and Reconfigurable Electronics

Advanced Functional Materials, EarlyView.
Ferroelectric memcapacitors enable non‐volatile, voltage‐programmable capacitance tuning for adaptive electronics. A TiN/HfZrO/TiN device stack demonstrates more than eight stable capacitance states within a 24 pF memory window in compact 60 ×$\times$ 60 μm2$\umu{\rm m}^{2}$ devices at low operating voltages.
Deepika Yadav, Spyros Stathopoulos, Patrick Foster, Andreas Tsiamis, Mohamed Awadein, Hannah Levene, Themis Prodromakis   +6 more
wiley   +1 more source

Mechanism Design and Kinematics Analysis of a Hybrid-driven Waist Rehabilitation Robot

Jixie chuandong, 2016
A cable-pneumatic-muscle hybrid-driven waist rehabilitation robot is designed for human waist and gait rehabilitation training.The presented data and curves indicate that the state of motion of human torso during normal walking and the rehabilitation ...
Yin Guangcai, Zi Bin, Chen Qiao, Li Yuan
doaj