Results 81 to 90 of about 1,283 (252)

车用复合无级变速器行星排组拓扑分析

open access: yesJixie chuandong, 2006
A new type of composite CVT(Continuously Variable Transmission) systems,based on dual-mode power-split planetary gear set,is of improved efficiency,power transmutability and speed variable range.On the basis of its working principles and feasible ...
杨凌   +4 more
doaj  

Design and Analysis of Continuously Variable Transmission based on Nested Structure

open access: yesJixie chuandong, 2022
At present,robot joint reducers are all constant transmission ratio,which makes it difficult for the motor to reach peak efficiency. Based on the nested structure,a compact continuously variable transmission (CVT) for robots is proposed,which can ...
Jianming Shen   +7 more
doaj  

Den attendance by Arctic foxes experiencing 10 years of increasing tourism

open access: yesWildlife Biology, EarlyView.
Wildlife tourism is a growing industry, and an increasing number of people seek to observe and interact with wild animals in their natural surroundings. In Iceland, the native Arctic fox Vulpes lagopus is widespread and has been under heavy hunting pressure for centuries.
Ester Rut Unnsteinsdóttir   +2 more
wiley   +1 more source

An Approach to Multicriteria Optimization of the Three-Stage Planetary Gear Train

open access: yesMachines
Planetary gear trains offer numerous advantages over traditional gear systems, including high efficiency, the ability to handle large torque loads, and significant reductions in mass and size for the same torque capacity.
Jelena Stefanović-Marinović   +4 more
doaj   +1 more source

When is the bait worth the risk? A mechanistic model of a compensatory ecological trap in seabirds

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological traps occur when organisms preferentially select habitats that reduce fitness. In seabird–fishery systems, fishery‐derived trophic subsidies can increase foraging success, reinforce habitat preference and indirectly enhance reproductive output or recruitment,
Cristóbal Anguita   +2 more
wiley   +1 more source

行星传动系统的快速虚拟装配

open access: yesJixie chuandong, 2008
Design requirement of each gear in planetary gear train is clarified,3D model of each part in the train is set up by solidworks and GearTrax.Virtual assemble of the train is anblysized.An example of involute spur gear is given,using the example,fast 3D ...
徐恺, 邓效忠, 吴剑, 尚振东
doaj  

Ideas for Testing of Planetary Gear Sets of Automotive Transmissions

open access: yesJournal of Middle European Construction and Design of Cars, 2017
Abstract The article describes the concept of modular stand, where is possible to provide tests of gear pairs with fixed axes from mechanical automotive gearboxes, as well as tests of separate planetary sets from automatic gearboxes. Special attention in the article will be paid to the variant dedicated for testing of planetary gear sets.
openaire   +2 more sources

Research on Self-locking and Efficiency Maximization of 3K(Ⅲ) Type Planetary Gear Train Based on the Transmission Ratio Method

open access: yesJixie chuandong
The planetary gear train has compact structure, high transmission efficiency, and is widely used in industrial manufacturing. There is a wide application space for the planetary gear train of the self-locking mechanism.
Xu Mengchong   +4 more
doaj  

Application of EMPE and KP-KELM in Fault Diagnosis of Planetary Gearbox

open access: yesJixie chuandong, 2019
According to the nonlinear and non-stationary of the planetary gearbox vibration signal fault characteristics is difficult to extract and the problem of low classification accuracy Gaussian kernel extreme learning machine based on random generation ...
Bo Qin   +5 more
doaj  

Energy Consumption Analysis of 2Z-X(B) Planetary Input-Coupled Hydro-Mechanical Tractor Transmission

open access: yesApplied Sciences
The hydro-mechanical transmission (HMT) of continuously variable transmission tractors typically achieves speed regulation using a 2Z-X(A) planetary gear system.
Fuxing Ge   +6 more
doaj   +1 more source

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