Nonlinearity error of unbalanced bridge dc measuring circuits

1983 ◽  
Vol 26 (8) ◽  
pp. 668-671
Author(s):  
N. F. Dudkin
Keyword(s):  
Nonlinearity Error ◽  
Unbalanced Bridge

scholarly journals Calculation of the components of the temperature measurement error by a resistance thermocouple of an installed unbalanced bridge

2021 ◽  
Vol 2094 (5) ◽  
pp. 052015
Author(s):  
A Leonov ◽  
N Zh Shkaruba ◽  
G N Temasova
Keyword(s):  
Measurement Error ◽  
Temperature Measurement ◽  
Supply Voltage ◽  
Voltage Drop ◽  
Measurement Range ◽  
Nonlinearity Error ◽  
Measuring Device ◽  
Unbalanced Bridge ◽  
Voltage Drops ◽  
Grain Drying

Abstract The article has devoted to solving an urgent problem related to the determination and calculation of the components of the temperature measurement error. A grain drying machine had selected as the object of research, in which the temperature of the grain at the exit from the machine is measured with the help of a Cu50 resistance thermocouple installed in an unbalanced bridge. It had found that the scale of the measuring device, calibrated in degrees Celsius, will have a nonlinearity error, which increases towards the end of the measurement range. For the Cu50 resistance thermocouple installed in the grain drying machine, when measuring the temperature in the range of 0 … 100 °C in absolute terms, the nonlinearity error was 0.3 mA, in relative terms - 4.4 %, which is quite large. The measurement error has calculated with a tolerance for the nominal resistance of the thermistor ± 0.1 Ohm, which in the given form was 0.5%. The resulting value indicates that this component will have an insignificant effect on the total measurement error. The measurement error due to the supply voltage drop by 0.2 V in relative form was 4.2 %. Thus, the voltage drops when using an unbalanced bridge will have a significant effect on the measurement result.

scholarly journals Nonlinearity error in homodyne interferometer caused by multi-order Doppler frequency shift ghost reflections

2017 ◽  
Vol 25 (4) ◽  
pp. 3605 ◽  
Author(s):  
Pengcheng Hu ◽  
Yue Wang ◽  
Haijin Fu ◽  
Jinghao Zhu ◽  
Jiubin Tan
Keyword(s):  
Frequency Shift ◽  
Doppler Frequency ◽  
Doppler Frequency Shift ◽  
Nonlinearity Error

Synergy Micro-Electronics Technology with a High Linearity BiCMOS Sample-and-Hold Circuit

2013 ◽  
Vol 473 ◽  
pp. 50-53
Author(s):  
Jie Lin ◽  
Fei Yan Mu
Keyword(s):  
Dynamic Range ◽  
Harmonic Distortion ◽  
High Accuracy ◽  
Pipeline Adc ◽  
Nonlinearity Error ◽  
Front End ◽  
Sample And Hold ◽  
Spurious Free Dynamic Range ◽  
Bicmos Process ◽  
Free Dynamic

A high accuracy BiCMOS sample and hold (S/H) circuit employed in the front end of a12bit 10 MS/s Pipeline ADC is presented. To reduce the nonlinearity error cause by the sampling switch, a signal dependent clock bootstrapping system is introduced. It is implemented using 0.6 um BiCMOS process. An 88.77 dB spurious-free dynamic range (SFDR), and a -105.20 dB total harmonic distortion (THD) are obtained.

Sub-nanometer periodic nonlinearity error in absolute distance interferometers

2015 ◽  
Vol 86 (5) ◽  
pp. 053103
Author(s):  
Hongxing Yang ◽  
Kaiqi Huang ◽  
Pengcheng Hu ◽  
Pengfei Zhu ◽  
Jiubin Tan ◽  
...  
Keyword(s):  
Absolute Distance ◽  
Nonlinearity Error

Design and Optimization of a Highly Sensitive and Linearity Piezoresistive Pressure Sensor Based on a Combination of Cross Beam-Peninsula-Membrane Structure

2017 ◽  
Author(s):  
Tran Anh Vang ◽  
Xianmin Zhang ◽  
Benliang Zhu
Keyword(s):  
Pressure Sensor ◽  
Pressure Sensors ◽  
Single Crystal Silicon ◽  
High Sensitivity ◽  
Crystal Silicon ◽  
Nonlinearity Error ◽  
Trade Off ◽  
Design And Optimization ◽  
Piezoresistive Pressure Sensor ◽  
Piezoresistive Pressure Sensors

The sensitivity and linearity trade-off problem has become the hotly important issues in designing the piezoresistive pressure sensors. To solve these trade-off problems, this paper presents the design, optimization, fabrication, and experiment of a novel piezoresistive pressure sensor for micro pressure measurement based on a combined cross beam - membrane and peninsula (CBMP) structure diaphragm. Through using finite element method (FEM), the proposed sensor performances as well as comparisons with other sensor structures are simulated and analyzed. Compared with the cross beam-membrane (CBM) structure, the sensitivity of CBMP structure sensor is increased about 38.7 % and nonlinearity error is reduced nearly 8%. In comparison with the peninsula structure, the maximum non-linearity error of CBMP sensor is decreased about 40% and the maximum deflection is extremely reduced 73%. Besides, the proposed sensor fabrication is performed on the n-type single crystal silicon wafer. The experimental results of the fabricated sensor with CBMP membrane has a high sensitivity of 23.4 mV/kPa and a low non-linearity of −0.53% FSS in the pressure range 0–10 kPa at the room temperature. According to the excellent performance, the sensor can be applied to measure micro-pressure lower than 10 kPa.

scholarly journals Seismic Discrimination between Earthquakes and Explosions Using Support Vector Machine

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1879
Author(s):  
Sangkyeum Kim ◽  
Kyunghyun Lee ◽  
Kwanho You
Keyword(s):  
Support Vector Machine ◽  
Hough Transform ◽  
Laser Interferometer ◽  
Kernel Functions ◽  
P Wave ◽  
Support Vector ◽  
Nonlinearity Error ◽  
Seismic Discrimination ◽  
Heterodyne Laser Interferometer ◽  
Discrimination Method

The discrimination between earthquakes and explosions is a serious issue in seismic signal analysis. This paper proposes a seismic discrimination method using support vector machine (SVM), wherein the amplitudes of the P-wave and the S-wave of the seismic signals are selected as feature vectors. Furthermore, to improve the seismic discrimination performance using a heterodyne laser interferometer for seismic wave detection, the Hough transform is applied as a compensation method for the periodic nonlinearity error caused by the frequency-mixing in the laser interferometric seismometer. In the testing procedure, different kernel functions of SVM are used to discriminate between earthquakes and explosions. The outstanding performance of a laser interferometer and Hough transform method for precision seismic measurement and nonlinearity error compensation is confirmed through some experiments using a linear vibration stage. In addition, the effectiveness of the proposed discrimination method using a heterodyne laser interferometer is verified through a receiver operating characteristic curve and other performance indices obtained from practical experiments.

Impedance Comparison Using Unbalanced Bridge With Digital Sine Wave Voltage Sources

2015 ◽  
Vol 64 (12) ◽  
pp. 3380-3386 ◽  
Author(s):  
Ryszard Rybski ◽  
Janusz Kaczmarek ◽  
Kamil Kontorski
Keyword(s):  
Sine Wave ◽  
Unbalanced Bridge
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