Results 71 to 80 of about 8,052 (227)

Fault Diagnosis of Small Sample Automobile Planetary Gearboxes Based on Continuous Wavelet Transform and Model Agnostic Meta Learning

open access: yesJixie chuandong, 2022
Aiming at the problem that the vibration signal of planetary gearboxes has strong non-stationary characteristics, few fault samples and the dependence of traditional deep learning on data, an intelligent diagnosis method for planetary gearboxes based on ...
Xinxin Lu, Jun Ma, Yingcong Zhang
doaj  

A model for a flywheel automatic assistedmanual transmission [PDF]

open access: yes, 2009
This paper is focused on the model and dynamical analysis of a flywheel assisted transmis- sion aiming at reducing the torque gap during gear shift manoeuvres. A completely passive device, consisting of a planetary gear set mounting a flywheel on the sun
A. Vigliani   +6 more
core   +1 more source

Reducing Tolerance‐Induced Spread on Transmission Error in Planetary Gear Stages Using Monte Carlo Simulations and Surrogate Models Acquired From a Design of Experiments Approach

open access: yesWind Energy, Volume 28, Issue 11, November 2025.
ABSTRACT Significant variations in tonality levels are frequently observed among nominally identical wind turbine drivetrains, both in industrial test setups and during field operations, posing challenges to compliance with noise emission standards. This work delves into the influence of production and assembly variations on static transmission error ...
Bart De Smet   +5 more
wiley   +1 more source

Robotic Arm Geomechanical Experiments and Analyses to Enable Lunar Science and Settlement

open access: yesEarth and Space Science, Volume 12, Issue 11, November 2025.
Abstract This study evaluates the capability of a robotic arm equipped with a force‐torque sensor and a specially designed scoop to perform geomechanical characterization of high‐fidelity lunar highlands regolith simulant. Experiments focused on pressure‐sinkage, shear strength, and angle of repose to assess the performance and applicability of the ...
J. M. Long‐Fox   +9 more
wiley   +1 more source

Dynamics of a split torque helicopter transmission [PDF]

open access: yes, 1992
A high reduction ratio split torque gear train has been proposed as an alternative to a planetary configuration for the final stage of a helicopter transmission. A split torque design allows a high ratio of power-to-weight for the transmission.
Krantz, Timothy, Rashidi, Majid
core   +2 more sources

A Controllable‐Stiffness Tensegrity Robot Joint for Robust Compliant Manipulation

open access: yesJournal of Field Robotics, Volume 42, Issue 7, Page 3348-3360, October 2025.
ABSTRACT With concerns about safety in human–robot interactions, there is a growing demand for inherent compliance in robot manipulation, especially in healthcare applications, where remote tendon‐driven mechanisms have drawn increasing attention, as they can reduce the overall robot joint size and weight by decoupling the motor from the rotary joint ...
Yifeng Hao   +5 more
wiley   +1 more source

Helicopters as a Theme in a Machine Design Course [PDF]

open access: yes, 2014
Helicopters as a Theme in Teaching Machine Design A machine design course is required in most undergraduate mechanical engineering curricula.This course generally covers an introduction to mechanical engineering design, a review of materials engineering,
Nagurka, Mark L., Turner, Devin
core   +1 more source

Advanced gearbox technology [PDF]

open access: yes
An advanced 13,000 HP, counterrotating (CR) gearbox was designed and successfully tested to provide a technology base for future designs of geared propfan propulsion systems for both commercial and military aircraft.
Anderson, N. E.   +3 more
core   +1 more source

Fault Analysis and Structural Improvement Design of Planetary Gear in Wind Turbine Gearbox

open access: yesJixie chuandong, 2019
Focusing on planetary gear fault of traditional NGW type wind turbine gearbox, the fault analysis in the process of using is carried out, finding out why the planetary gear is damaged and an improved design of transmission structure for wind turbine ...
Yonghong Li
doaj  

Early Fault Diagnosis for Planetary Gearbox Based on Adaptive Parameter Optimized VMD and Singular Kurtosis Difference Spectrum

open access: yesIEEE Access, 2019
Variational mode decomposition (VMD) is widely used in the condition monitoring and fault diagnosis of rotary machinery for its unique advantages. An adaptive parameter optimized VMD (APOVMD) is proposed in order to adaptively determine the suitable ...
Chaoge Wang   +3 more
doaj   +1 more source

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