用延时信号的条件平均法测量相移角

IF 1 4区工程技术 Q4 INSTRUMENTS & INSTRUMENTATION Metrology and Measurement Systems Pub Date : 2023-11-06 DOI:10.24425/mms.2022.143064

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Using conditional averaging of delayed signals to measure phase shift angle

Anovelmeasurementmethodandabriefdiscussionofbasiccharacteristicsofmeasuringthephaseshiftanglebetweentwosinusoidalsignalsofthesamefrequencyarepresentedinthispaper.Itcontainsamathematical modelforusingconditionalaveragingofadelayedsignalinterferedwithnoisetomeasurethephase shiftangle.Italsoprovidescharacteristicsofconditionalmeanvaluesanddiscussestheeﬀectofrandom interferencesontheaccuracyofthephaseshiftmeasurement.Thewaytodeterminethevarianceofthe conditionalmeanvalue,togetherwiththeassessmentofstandardandexpandeduncertainty,aredescribed. Theuncertaintycharacteristicshowsthecomplementarypropertiesofthediscussedanglemeasurement principle 𝜑 for small absolute values | 𝜑 | (minimum for 𝜑 = 0) relative to the correlation principle, where the minimum measurement uncertainty is present for 𝜑 = 𝜋 / 2.

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来源期刊

Metrology and Measurement Systems INSTRUMENTS & INSTRUMENTATION-

CiteScore

2.00

自引率

10.00%

发文量

审稿时长

6 months

期刊介绍： Contributions are invited on all aspects of the research, development and applications of the measurement science and technology. The list of topics covered includes: theory and general principles of measurement; measurement of physical, chemical and biological quantities; medical measurements; sensors and transducers; measurement data acquisition; measurement signal transmission; processing and data analysis; measurement systems and embedded systems; design, manufacture and evaluation of instruments. The average publication cycle is 6 months.