Dynamic model research and testing system design of the intermittent transfer device on high-speed synchronous belt

2017 ◽  
Author(s):  
Zhenghao Ge ◽  
Mengfan Zhao ◽  
Sen Li ◽  
Zhengjie Wang
Keyword(s):  
System Design ◽  
Dynamic Model ◽  
High Speed ◽  
Testing System ◽  
Model Research ◽  
Transfer Device

Dynamic model for high-speed rotors based on their experimental characterization

2017 ◽  
Vol 2 (4) ◽  
pp. 25
Author(s):  
L. A. Montoya ◽  
E. E. Rodríguez ◽  
H. J. Zúñiga ◽  
I. Mejía
Keyword(s):  
Dynamic Model ◽  
High Speed ◽  
Natural Frequencies ◽  
Mode Shapes ◽  
Experimental Characterization ◽  
Rotating Systems ◽  
Computing Performance ◽  
The Impact ◽  
Stiffness Distribution ◽  
Good Agreement

Rotating systems components such as rotors, have dynamic characteristics that are of great importance to understand because they may cause failure of turbomachinery. Therefore, it is required to study a dynamic model to predict some vibration characteristics, in this case, the natural frequencies and mode shapes (both of free vibration) of a centrifugal compressor shaft. The peculiarity of the dynamic model proposed is that using frequency and displacements values obtained experimentally, it is possible to calculate the mass and stiffness distribution of the shaft, and then use these values to estimate the theoretical modal parameters. The natural frequencies and mode shapes of the shaft were obtained with experimental modal analysis by using the impact test. The results predicted by the model are in good agreement with the experimental test. The model is also flexible with other geometries and has a great time and computing performance, which can be evaluated with respect to other commercial software in the future.

scholarly journals Investigating the Trackability of Silicon Microprobes in High-Speed Surface Measurements

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1557
Author(s):  
Min Xu ◽  
Zhi Li ◽  
Michael Fahrbach ◽  
Erwin Peiner ◽  
Uwe Brand
Keyword(s):  
Dynamic Model ◽  
High Speed ◽  
High Signal ◽  
Resonant Response ◽  
High Demand ◽  
Surface Measurements ◽  
Tactile Roughness ◽  
Low Mass ◽  
Roughness Measurements

High-speed tactile roughness measurements set high demand on the trackability of the stylus probe. Because of the features of low mass, low probing force, and high signal linearity, the piezoresistive silicon microprobe is a hopeful candidate for high-speed roughness measurements. This paper investigates the trackability of these microprobes through building a theoretical dynamic model, measuring their resonant response, and performing tip-flight experiments on surfaces with sharp variations. Two microprobes are investigated and compared: one with an integrated silicon tip and one with a diamond tip glued to the end of the cantilever. The result indicates that the microprobe with the silicon tip has high trackability for measurements up to traverse speeds of 10 mm/s, while the resonant response of the microprobe with diamond tip needs to be improved for the application in high-speed topography measurements.

Sino-Singapore Tianjin Eco-City Wind and Solar Hybrid Lamps Testing System Design and Application

2013 ◽  
Vol 391 ◽  
pp. 277-280
Author(s):  
Dong Sheng Zhang ◽  
Bao Xin Sun
Keyword(s):  
Wireless Communication ◽  
Natural Resources ◽  
System Design ◽  
Scientific Basis ◽  
Testing System ◽  
City Management ◽  
Communication Design ◽  
Four Seasons ◽  
Fan Speed ◽  
Battery Energy

In this paper, we study the wind and solar hybrid lamps testing system which is based on wireless communication design. The collected data will be calculated. The paper analyses six typical points to research the solar energy, wind energy to the battery energy conversion. Moreover, the paper also analyses the scenery energy and fan speed data for four seasons, providing scientific basis for eco-city management analysis of local natural resources utilization.

High-Speed Digital System Design

2020 ◽  
Author(s):  
Anatoly Belous ◽  
Vitali Saladukha
Keyword(s):  
System Design ◽  
High Speed ◽  
Digital System ◽  
Digital System Design

scholarly journals Millimeter-Wave System for High-Speed Train Communications Between Train and Trackside: System Design and Channel Measurements

2019 ◽  
Vol 68 (12) ◽  
pp. 11746-11761 ◽  
Author(s):  
Guangrong Yue ◽  
Daizhong Yu ◽  
Long Cheng ◽  
Qifu Lv ◽  
Zhigang Luo ◽  
...  
Keyword(s):  
System Design ◽  
Millimeter Wave ◽  
High Speed ◽  
Wave System ◽  
Channel Measurements ◽  
High Speed Train

Improvement and Lock Calculation of Electric Switch Machine of Railway Turnout

2013 ◽  
Vol 409-410 ◽  
pp. 1496-1501 ◽  
Author(s):  
Jing Mang Xu ◽  
Ping Wang ◽  
Hao Xu
Keyword(s):  
Dynamic Model ◽  
High Speed ◽  
Lateral Stiffness ◽  
High Speed Railway ◽  
Train Speed ◽  
Working Status ◽  
Stress And Deformation ◽  
Railway Turnout

Electric switch machine locks the crossing rail in the working direction and checks the working status of the crossing. With the increase of train speed, the ZD(J)9 electric switch machine cant satisfy the equipment of high speed railway, This paper studied the optimization; in order to study the lock calculation of nose rail after conversion, a dynamic model is established to research the influence of working status of the crossing. It indicates that for the first traction point, the stress and deformation are mainly affected by scant displacement between nose rail and wing rail; for the second traction point, they are affected by the gap between nose rail and spacer; fastener lateral stiffness doesnt influence the stress status, but the lateral fastener stiffness should not be too small.

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