Results 101 to 110 of about 54,143 (228)

Influence of internal excitation and boxbody flexibility on the vibration of high-speed train gearboxes

机车电传动
During the operation of high-speed trains, the loads on the gearbox are very complex, and cracks often occur in the boxbody. To ensure the service safety of the gearbox body, a dynamic model of high-speed trains with a gear transmission system was ...
YU Hongda, LIU Jiahui, HUANG Zhihui, TIAN Mingjie   +3 more
doaj  

Fault diagnosis of wind turbine gearbox based on wavelet neural network

Journal of Low Frequency Noise, Vibration and Active Control, 2018
In order to monitor the wind turbine gearbox running state effectively, a fault diagnosis method of wind turbine gearbox is put forward based on wavelet neural network.
Chen Huitao, Jing Shuangxi, Wang Xianhui, Wang Zhiyang   +3 more
doaj   +1 more source

Two-Bit Gates are Universal for Quantum Computation

, 1994
A proof is given, which relies on the commutator algebra of the unitary Lie groups, that quantum gates operating on just two bits at a time are sufficient to construct a general quantum circuit.
A. Abragham, A. Berthiaume, A. C. C. Yao, A. Peres, C. H. Bennett, C. P. Slichter, C. S. Lent, D. Deutsch, D. Deutsch, D. M. Eigler, D. R. Simon, D. Rugar, David P. DiVincenzo, E. Bernstein, E. Peik, J. D. Talman, J. Mathews, J. P. Bird, K. Obermayer, O. Züger, P. Benioff, P. Shor, R. F. Feynman, R. M. Eisberg, R. W. Equall, S. Lloyd, S. Lloyd, S. Washburn, S. Washburn, T. E. Chupp, T. E. Chupp, W. G. Teich   +31 more
core   +2 more sources

Chaotic Characteristic Verification of Gearbox Vibration Signal based on the Time Synchronous Averaging and Separation Technology

Jixie chuandong, 2018
The gearbox vibration signal of normal and different degrees teeth break fault condition are analyzed,the chaotic characteristics of the gearbox vibration signal are verified by using the time synchronous averaging method（ TSA） to separate the linear ...
Li Jie, Zhao Jianmin
doaj  

Topology optimization of transmission gearbox under multiple working loads

Advances in Mechanical Engineering, 2018
This article is concerned with topology optimization of transmission gearbox under multiple working loads by taking dynamic performance as research object.
Mingxuan Liang, Jianhong Hu, Shuqing Li, Zhigao Chen   +3 more
doaj   +1 more source

Status of advanced turboprop technology [PDF]

, 1978
Research is reviewed in the following areas: turboprop powered transport aircraft; wind tunnel aerodynamic and acoustics tests of model propellers; turboprop maintenance; and wind tunnel tests on airframe-turboprop interactions.
Dugan, J. F., Miller, B. A., Sagerser, D. A.   +2 more
core   +1 more source

Study on the Test System Design and the Test Method for Gearbox Housing Deformation

Jixie chuandong, 2017
Taking a casting aluminum alloy gearbox as the research object,a high precision and easy to control gearbox housing deformation test system is designed by the mode of hydraulic servo control.
Zou Xihong, Liu Yu, Peng Jigang, Liu Chunlin, Luo Yang   +4 more
doaj  

Using TOPSIS Method for Solving Multi-Objective Optimization of a Two-stage Helical Gearbox with First Stage Double Gear-sets

Journal of Machine Engineering
In order to build a two-stage helical gearbox (THG) with first stage double gear-sets (FSDG), the multi-criteria decision-making (MCDM) method is introduced in this research as a new approach to solving the multi-objective optimization problem (MOOP ...
Van-Thanh Dinh, Huu-Danh Tran, Duc-Binh Vu, Duong Vu, Ngoc-Pi Vu, Tung Anh Luu   +5 more
doaj   +1 more source

Design, control and evaluation of a low-cost active orthosis for the gait of spinal cord injured subjects [PDF]

, 2016
Robotic gait training after spinal cord injury is of high priority to maximize independence and improve the living conditions of the patients. Current rehabilitation robots are expensive and heavy, and are generally found only in the clinical environment.
Alonso Sánchez, Francisco Javier, Clos Costa, Daniel, Cuadrado Aranda, Javier, Font Llagunes, Josep Maria, Lugrís Armesto, Urbano, Pàmies Vilà, Rosa, Romero Sánchez, Francisco   +6 more
core  

A Fault Diagnosis Method and Experimental Verification of Automobile Gearbox based on BP Neural Network

Jixie chuandong, 2019
Based on the wavelet neural network algorithm,the vibration signals of the automobile gearbox is analyzed from the time domain and the frequency domain,and the values with time domain and frequency domain characterization are extracted,and a method of BP
Yang Jiayin
doaj