Real-time and accurate rail wear measurement method and experimental analysis

According to Doppler effect of satellite on the time synchronization technology between satellite and the ground station, a real-time measurement method of Doppler is proposed based on GPS carrier signals. Using Doppler observations from GPS receiver, the method can real-timely measure Doppler frequency shift of GPS including dynamic Doppler and media Doppler whose error can be timely modified in the receiver end. Simulation results show that the frequency shift caused by dynamic Doppler, a main influencing factor in the course of transmission of time-frequency signal by GPS satellite, is between plus or minus several thousands Hz. Comparing to traditional measurement method of Doppler, the method makes it possible to fast track phase of signal in large dynamic range in synchronous technology.

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A Real-Time Precise Vision Measurement Method for Thin Material Tensile Tests at Full Strain-Rates

Lecture Notes in Electrical Engineering - Proceedings of the Seventh Asia International Symposium on Mechatronics ◽

10.1007/978-981-32-9441-7_80 ◽

2019 ◽

pp. 778-793

Author(s):

Xinghua Chai ◽

Feng Gao ◽

Yan Hu

Keyword(s):

Real Time ◽

Measurement Method ◽

Tensile Tests ◽

Strain Rates ◽

Vision Measurement

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Real-Time Measurement Method for Retardation of Eighth Waveplate Independent of Fast Axis

Chinese Journal of Lasers ◽

10.3788/cjl201138.0508002 ◽

2011 ◽

Vol 38 (5) ◽

pp. 0508002 ◽

Cited By ~ 1

Author(s):

朱玲琳 Zhu Linglin ◽

曾爱军 Zeng Aijun ◽

李凡月 Li Fanyue ◽

黄惠杰 Huang Huijie

Keyword(s):

Real Time ◽

Measurement Method ◽

Time Measurement ◽

Fast Axis ◽

Real Time Measurement

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A Real Time Measurement Method of Leakage Conductance in Distribution Network

2018 International Conference on Power System Technology (POWERCON) ◽

10.1109/powercon.2018.8601653 ◽

2018 ◽

Author(s):

Fan Yuefu ◽

Chen Lei ◽

Li Jianhua ◽

Liu Fang ◽

Yu Kun ◽

...

Keyword(s):

Real Time ◽

Measurement Method ◽

Distribution Network ◽

Time Measurement ◽

Real Time Measurement

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Real-time Battery Cell Voltage Measurement Method Using LC Series Circuit Type Cell Voltage Equalizer

2019 IEEE 4th International Future Energy Electronics Conference (IFEEC) ◽

10.1109/ifeec47410.2019.9015080 ◽

2019 ◽

Author(s):

Daiki Satou

Keyword(s):

Real Time ◽

Measurement Method ◽

Cell Voltage ◽

Voltage Measurement ◽

Battery Cell

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A Microscopic Wear Measurement Method for General Surfaces

Journal of Tribology ◽

10.1115/1.1467085 ◽

2002 ◽

Vol 124 (4) ◽

pp. 829-833 ◽

Cited By ~ 10

Author(s):

Yeau-Ren Jeng ◽

Zhi-Way Lin ◽

Shiuh-Hwa Shyu

Keyword(s):

Surface Roughness ◽

Measurement Method ◽

Current Method ◽

Current Approach ◽

Height Distribution ◽

Initial Surface ◽

Roughness Parameters ◽

Wear Measurement ◽

Non Gaussian ◽

Worn Surfaces

A method was developed to measure the wear of general engineering surfaces based on the roughness parameters of the worn surfaces. This method does not require any information of the initial surface. The surface height distribution is described using Johnson translatory system where the loss of surface height is attributed to wear. Experiments of engine running in were conducted to validate the method. The results show that the current method can determine wear comparable to surface roughness. The current approach simplifies the profilometrical wear measurement and extends such a measurement to non-Gaussian surfaces.

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