Results 11 to 20 of about 251,598 (308)

A PID Control Method Based on Internal Model Control to Suppress Vibration of the Transmission Chain of Wind Power Generation System

open access: yesEnergies, 2022
Vibrations occur in the wind turbine drivetrain due to the drivetrain’s elasticity and gear clearance. Typically, the PID control method is used to suppress elastic vibration, while the method with the disturbance suppression function is used to suppress
Chenyang Zhou, Yanxia Shen
doaj   +1 more source

A 2-DOF-IMC method for suppressing transmission chain vibration of wind power generation system with a clearance

open access: yesAdvances in Mechanical Engineering, 2022
To address the vibration problem caused by gear clearance in the wind drivetrain, a two-degree-of-freedom internal model control (2-DOF-IMC) method was proposed to suppress the clearance’s nonlinear vibration.
Chen-Yang Zhou, Yan-Xia Shen
doaj   +1 more source

Investigation of Tooth Friction Conditions of Electric Vehicle Gearbox with Plastic Gears

open access: yesEngineering Proceedings
Earlier, I created a mathematical model of the gear unit, in which the value of the tooth friction was determined during precalculation and then entered into the model as a constant parameter.
József Polák
doaj   +1 more source

Hybrid Auxetic Architectures: Integrating Curvature‐Driven Design for Enhanced Mechanical Tunability and Structural Performance

open access: yesAdvanced Engineering Materials, EarlyView.
Curvature‐tuned auxetic lattices are designed, fabricated, and mechanically characterized to reveal how geometric curvature governs stretchability, stress redistribution, and Poisson's ratio evolution. Photoelastic experiments visualize stress pathways, while hyperelastic simulations quantify deformation mechanics.
Shuvodeep De   +3 more
wiley   +1 more source

Displacement prediction and optimization of a non-circular planetary gear hydraulic motor

open access: yesAdvances in Mechanical Engineering, 2021
The non-circular planetary gear hydraulic motor is a low-speed and high-torque hydraulic motor with excellent performance. It has the characteristics of a wide speed range, low weight and is widely used in various fields.
Biao Zhang   +3 more
doaj   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey   +5 more
wiley   +1 more source

Marine recreational fisheries statistics survey for Northern and Central California, Quarterly Report No. 3, January to March 1980 [PDF]

open access: yes, 1987
Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in January to March 1980, is presented in a data report format.
Karpov, Konstantin A.   +1 more
core  

Multistackable, Domino‐Overlapped CNT Scaffolds Homogeneously Hybridized with BTO‐P(VDF‐TrFE) for High‐Performance Piezoelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
A multilayer‐stackable carbon nanotuber (CNT) scaffold‐based piezoelectric nanogenerator (CPENG) with domino‐patterned CNT pillars presents high, stable output (12.3 V, size of 1 cm × 1 cm) over 2000 cycles, operates across a wide temperature range, and efficiently converts energy from real‐life stimuli through optimized CNT length, layer stacking, and
Kwangjun Kim   +3 more
wiley   +1 more source

Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 2, October to December, 1979 [PDF]

open access: yes, 1987
Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in October to December 1979, is presented in a data report format.
Karpov, Konstantin A.   +2 more
core  

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

open access: yesAdvanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler   +3 more
wiley   +1 more source

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