Results 201 to 210 of about 1,551 (263)

Task-Dependent Effectiveness of a Quasi-Direct-Drive Upper-Limb Exoskeleton: Shoulder Muscle Offloading Versus Metabolic Cost in Overhead Work. [PDF]

Bioengineering (Basel)
Hong Y, Du J, Du S, Ma Y, Wang X, Chen C.   +5 more
europepmc   +1 more source

Stiffness‐Programmable Origami Robots With Tendon‐Driven Actuation via Multimaterial 3D Printing

Advanced Robotics Research, EarlyView.
Motion diversity is achieved in a tendon‐driven origami robot through programmable stiffness rather than modified actuation. Multimaterial 3D printing embeds soft creases, modular inserts redirect identical tendon inputs into distinct behaviors, and variable‐stiffness inserts enable real‐time switching.
Elisha Lerner, Jianguo Zhao
wiley   +1 more source

Self-Powered Sensing System for Electric Vehicle Drive Condition Monitoring and Driving Condition Identification in Intelligent Electric Vehicles. [PDF]

Research (Wash D C)
Tang J, Li H, Hu Y, Shang Y, Li H, Tian H, Liu P, Zhou L, Zhang J, Zhao H.   +9 more
europepmc   +1 more source

A Calculation Method of Bearing Balls Rotational Vectors Based on Binocular Vision Three-Dimensional Coordinates Measurement. [PDF]

Sensors (Basel)
Lu W, Xue J, Pu W, Chen H, Wang K, Jia R.   +5 more
europepmc   +1 more source

Multi-objective macro-geometry optimization of a compound planetary geartrain for an electric tractor powertrain using NSGA-II. [PDF]

Sci Rep
Baek SM, Jeon HH, Kim WS, Kim YS, Kim YJ.   +4 more
europepmc   +1 more source

Tribological study of amorphous polyethylene under different rough surfaces of chromium based on molecular dynamics simulation. [PDF]

Sci Rep
Yuan Y, Zhang Y, Li W, Geng L, Fan P, Luo S.   +5 more
europepmc   +1 more source

Variation patterns of modal characteristics in a CAES multi-shaft integrally geared compressor rotor system under variable operating conditions. [PDF]

Sci Prog
Mao J, Gong J, Yuan Y.
europepmc   +1 more source

Design and experimental study of a rigid-flexible coupled back rehabilitation robot. [PDF]

Front Bioeng Biotechnol
Kong D, Wang Y, Mo F, Wang C, Huang Z, Ouyang T.   +5 more
europepmc   +1 more source

Radial Ball Bearings with Angular Contact in Machine Tools

, 2012
openaire   +2 more sources

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Lubrication of Angular Contact Bearings

Journal of Mechanical Engineering Science, 1970
In angular contact bearings the motion of the ball on the race involves both rolling and spinning. Recent work provides theories of the generation of a lubricant film, by hydrodynamic mechanisms, for each of these motions considered in isolation. By comparison of these theories, and using knowledge of the kinematics of bearings, it has been possible ...
R. W. Snidle, J. F. Archard
openaire   +1 more source