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One of the major errors directly influencing the metrological characteristics of the integrating measuring strain gauge converter is the inequality of the output voltages of the comparator. The current paper explores the effect of the voltages variation at the output of the comparator in the case of a bipolar power supply of the converter. The output data is obtained by modeling the equation of conversion in the MATLAB environment. The fore-mentioned problem is investigated assuming up to 20% inequality of the output voltages compared to the supply voltage and a bilateral change of the load on the strain gauges. A regression analysis is performed checking the suitability of a linear, quadratic and cubic model. It shows that the coefficient of determination is highest for the cubic model and relevant conclusions are made.

annual journal of technical university of varna

Researching the change of the operating frequencies in the case of inequality of the output voltages of the comparator within the structure of an integrating measuring strain gauge converter