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Engineering Physics Annotation << Back
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FEEDBACK IN THE SYSTEM OF MEASURING GENERATOR POWER STABILIZATION |
A.L. GALIEV, A.V. ORLOV, N.I. YUMAGULOV
The article deals with the stabilization of the measuring generator power via controlled feedback loops with corresponding elements on the information processing control law function. It was found that among the various parameters that affect the stabilizing effect of the power dissipated in the load oscillating circuit, is the most optimal power control by changing the voltage applied to the input of the oscillation circuit, and the correction is carried out by varying the circuit loss resistance. A resistance meter using a method with an intermediate voltage conversion in the time interval. This method has a high accuracy, especially when measuring high resistance, because resistance measurement error does not depend on the absolute value of the voltage Ux, which «falls» on the resistance Rх of the investigated object when the condition Rх >> Rос. It is shown that the error of measurement, without taking into account the comparison of error comparator and some other factors, is less than 1%. It is also noted that the proposed measuring the resistance unit may be used as a precision high-resistance resistivity meter various objects.
Keywords: reference resistance, calibration, counter, comparator, precision rectifier, programmable logic array, programmable power scaling.
Contacts: E-mail: galievanvar@mail.ru, E-mail: orlov_alexey81@mail.ru, Е-mail: ym_nik@mail.ru
Pp. 80-87. |
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