Results 1 to 10 of about 3,892,702 (296)
Sensor Modeling and Calibration Method Based on Extinction Ratio Error for Camera-Based Polarization Navigation Sensor [PDF]
Sensors, 2020 The performance of camera-based polarization sensors largely depends on the estimated model parameters obtained through calibration. Limited by manufacturing processes, the low extinction ratio and inconsistency of the polarizer can reduce the ...
Haonan Ren +4 more
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Transformation of Transient Overvoltages by Inductive Voltage Transformers
Sensors, 2021 Overvoltage transients occur after any type of switching activity in a power network, such as breaker operation, fault occurrence/clearance and rapid load change. This distortion of voltage is transformed to the secondary circuit of a voltage transformer.
Michał Kaczmarek, Dariusz Brodecki
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Nonlinear error recognition of FOCT based on CEEMDAN-ZCR
电力工程技术, 2022 Focusing on the problem that it is difficult to distinguish the nonlinear errors such as drift error and ratio error of fiber optic current transformer (FOCT), an error recognition method based on complete ensemble empirical mode decomposition with ...
WANG Lihui, ZHANG Wenpeng, AN Yiyan
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AN EXPLORATION STUDENT’S ERRORS IN SOLVING TRIGONOMETRIC RATIO PROBLEMS WITH ITS SCAFFOLDING
Aksioma: Jurnal Program Studi Pendidikan Matematika, 2022 Trigonometry is an essential topic in learning mathematics, but in fact there are still identified student errors in solving trigonometry problems. Based on these problems, this study aims to describe students' errors in solving trigonometric problems ...
Nurdiyah Kurniati +3 more
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Sensors, 2020 The instrument transformers scenario is moving towards the adoption of a new generation of low-power instrument transformers. This disruptive change also requires that the modeling, characterization, and testing of those devices must be improved ...
Abbas Ghaderi +3 more
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Bounding distributional errors via density ratios [PDF]
Bernoulli, 2021 We present some new and explicit error bounds for the approximation of distributions. The approximation error is quantified by the maximal density ratio of the distribution $Q$ to be approximated and its proxy $P$. This non-symmetric measure is more informative than and implies bounds for the total variation distance.
Dümbgen, Lutz +2 more
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On the Long-Period Accuracy Behavior of Inductive and Low-Power Instrument Transformers
Sensors, 2020 The accuracy evaluation of instrument transformers is always a key task when proper control and management of the power network is required. In particular, accuracy becomes a critical aspect when the grid or the instrumentation itself is operating at ...
Alessandro Mingotti +3 more
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Sensors, 2020 The article presents a study on low-power voltage transformers (LPVTs). Considering their increasing spread among Smart Grids, it is fundamental to assess their accuracy behavior in as realistic conditions as possible.
Alessandro Mingotti +2 more
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Errors analysis in pyrometric measurements in industrial environment [PDF]
Омский научный вестник, 2019 The article presents the analysis of uncertainties associated with reliable accounting difficulties for the radiation coefficient in non-contact temperature measurement in industrial environment.
D. B. Ponomarev +2 more
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Electronic Voltage and Current Transformers Testing Device
Sensors, 2012 A method for testing electronic instrument transformers is described, including electronic voltage and current transformers (EVTs, ECTs) with both analog and digital outputs. A testing device prototype is developed.
Yong Xiao +3 more
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