engleski

Tracking real characteristics by multiple-point autocalibration and the tangent method applied to ideal characteristics

The measurement system transfer characteristic is an unsteady, non-linear function that depends upon time and ambient conditions. The paper presents a method of tracking the real characteristic by using periodic auto-calibration of the real characteristic and by applying a tangent method to the ideal characteristic. The efficiency of the algorithm has been verified for DC current generation. Periodic auto-calibration fixes the current state of the measurement system characteristic by measuring internal references. The correction of a quantity at the input of the current generator is calculated from measurement of its output quantity and by using a tangent method applied to the ideal current generator characteristic.

autocalibration; reference values; measurement system; measurement system characteristic

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