Results 41 to 50 of about 86,507,712 (301)
1.5V rail-to-rail programmable-gain CMOS amplifier
ESSCIRC 2004 - 29th European Solid-State Circuits Conference (IEEE Cat. No.03EX705), 2004 A 1.5V programmable-gain differential amplifier is implemented using a novel design technique for operating closed-loop amplifier circuits at very low supply voltages. It is based on the use of quasi-floating gate transistors, avoiding issues encountered in true floating-gate structures such as the initial floating-gate charge, offset drift with ...
Jaime Ramírez-Angulo +3 more
openaire +4 more sources
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
Rail vehicle suspensions and components
, 2021 • Rail Car Types. • Rail Car Suspensions: Why are suspensions important; reasons for suspension design choices; freight vs. passenger designs.
Toma, Elton
core
Research on the Wheel-rail Matching in High-speed Railway under Different Traction Conditions
机车电传动, 2018 In order to study the contact characteristics of the new rail profile and the high-speed EMUs wheel profiles, the profiles matching between LMA, S1002CN, XP55 wheel and 60D, 60N rail in the middle position had been proceeded.
WANG Xueping, ZHANG Jun, MA He
doaj
KSCE Journal of Civil EngineeringThis study investigates the impact of rail corrugation on rail jumping behavior in 400 km/h high-speed trains. A vertical vibration model of the high-speed vehicle-CRTS III slab ballastless track was created using multi-body dynamics and finite element ...
Kai Gong +3 more
doaj +1 more source
The Diagnostics and layout of railway track from the results of GPS measurements [PDF]
Acta Montanistica Slovaca, 2005 The diagnostics and layout of the railway track from the results of GPS measurements, possibilities and consideration of using the GPS technology in the railway geodesy. Integrating the GPS into the rail diagnostics and repairs technologies with focusing
Jaroslav Šíma, Ladislav Bitterer
doaj
3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications
Advanced Robotics Research, EarlyView.Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun +3 more
wiley +1 more source
A Design Method for Rail Profiles in Switch Panel of Turnout Based on the Contact Stress Analysis
Shock and Vibration, 2020 Contact stress between wheel and rail is believed to cause damage to the rail. The relationship between the contact stress and the radius of the rail is initially based on the Hertz contact theory.
Dilai Chen +3 more
doaj +1 more source
Rail Corrugation of High-Speed Railway Induced by Rail Grinding
Shock and Vibration, 2021 Rail corrugation is a common railway defect that involves diverse and complex factors. Rail grinding is also the most commonly used method to address corrugations. Through numerous irregularity tests and one-third octave frequency spectrum analyses, this
Xing Du +4 more
doaj +1 more source
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source