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Vol. 215, Issue 8, August 2017, pp. 8-12




Capacitive Measurer of Linear Displacement


1 National Polytechnical University of Armenia, Gyumri Branch 2, Mher Mkrtchyan, 3103, Gyumri, Armenia
2 National Polytechnical University of Armenia, Yerevan Educational Complex 105, Teryan, 0009, Yerevan, Armenia
1 Tel.: +374312-46832, fax: +374312-43528

1 E-mail: b_mamikonyan@seua.am


Received: 30 July 2017 /Accepted: 30 August 2017 /Published: 31 August 2017

Digital Sensors and Sensor Sysstems


Abstract: The features of constructing of a linear displacement measurer with differential capacitive transducer are considered. The measuring circuit is analyzed, which makes possible to implement a linear algorithm for determining the measured displacement. With an appropriate choice of the base element, in the production conditions the device can provide measurement of linear displacements with a limit of the permissible basic comparative error not exceeding 0.12 %.


Keywords: Measurement, Measuring circuit, Capacitive transducer, Phase signal, Microcontroller, Computer.


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