A novel material measure for characterising two-dimensional instrument transfer functions of areal surface topography measuring instruments

2020 ◽  
Vol 8 (4) ◽  
pp. 045025
Author(s):  
Gaoliang Dai ◽  
Ziyang Jiao ◽  
Lanting Xiang ◽  
Benedikt Seeger ◽  
Thomas Weimann ◽  
...  
Keyword(s):  
Surface Topography ◽  
Transfer Functions ◽  
Measuring Instruments ◽  
Two Dimensional ◽  
Novel Material ◽  
Material Measure ◽  
Areal Surface

Calibration of the scales of areal surface topography-measuring instruments: part 1. Measurement noise and residual flatness

2012 ◽  
Vol 23 (3) ◽  
pp. 035008 ◽  
Author(s):  
Claudiu L Giusca ◽  
Richard K Leach ◽  
Franck Helary ◽  
Tadas Gutauskas ◽  
Lakshmi Nimishakavi
Keyword(s):  
Surface Topography ◽  
Measurement Noise ◽  
Measuring Instruments ◽  
Areal Surface

Half division two-dimensional method for simple sinusoidal quantities parameters accurate measurement

2021 ◽  
pp. 16-21
Author(s):  
Kirill Yu. Solomentsev ◽  
Vyacheslav I. Lachin ◽  
Aleksandr E. Pasenchuk
Keyword(s):  
Measuring Instruments ◽  
Measured Signal ◽  
Two Dimensional ◽  
Measuring Device ◽  
New Approach ◽  
Precision Measuring ◽  
Useful Signal ◽  
Midpoint Method ◽  
Order Of Magnitude ◽  
Current Measuring

Several variants of half division two-dimensional method are proposed, which is the basis of a fundamentally new approach for constructing measuring instruments for sinusoidal or periodic electrical quantities. These measuring instruments are used in the diagnosis of electric power facilities. The most general variant, called midpoint method, is considered. The proposed midpoint method allows you to measure much smaller than using widespread methods, alternating currents or voltages, especially when changing the amplitude of the measured signal in very wide ranges, by 1–2 orders of magnitude. It is shown that using the midpoint method it is possible to suppress sinusoidal or periodic interference in the measuring path, in particular, to measure small alternating current when sinusoidal or periodic interference is 1–2 orders of magnitude higher than the useful signal. Based on the results of comparative tests, it was found that the current measuring device implementing the midpoint method is an order of magnitude more sensitive than the currently used high-precision measuring instruments.

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