Method and device for the hysteresis correction of measured...

Measuring and testing – Instrument proving or calibrating – Dynamometer

Reexamination Certificate

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Reexamination Certificate

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06928853

ABSTRACT:
A transducer including a deformation body with a strain gage produces hysteresis-affected measured values based on the strain of the deformation body. Each measured value is to be corrected by the hysteresis error. For this purpose, a hysteresis model is formed from a recorded loading characteristic curve and the theory of the dipole density of the oriented elementary dipoles in the interior of the deformation body. With the aid of the hysteresis model, and the determined hysteresis-affected measured values, and in connection with the acquired loading history, a correction value is derived and used to correct the hysteresis error.

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Ball et al., “A Stress-Dependent Hysteresis Model for PZT-Based Transducers”, Techinal Report #2004-6, SAMSI, Mar. 24, 2004.
“Finite Element Modelling of Load Cell Hysteresis”, G. M. Robinson, Measurement, Institute of Measurement and Control, London, GB, vol. 20, Nr. 2, pp. 103-107, XP004084420, ISSN: 0263-2244.

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