Modeling of negative resistance for resistive transducers linearisation

Author

Mamikonyan, Khorcn

Author_Institution

Dept. of Electr. & Autom., State Eng. Univ. of Armenia, Armenia

Volume

1

fYear

2003

fDate

20-22 Aug. 2003

Firstpage

216

Abstract

The aim of the research is to develop the precision measuring converter for resistive transducers having nonlinear characteristic of conversion. It reviews the example of measuring converter creation for narrow-limited (about 20 K) thermometers with application of standard platinum resistance thermal converter (RTC) in the capacity of the transducer when the linearization problem of conversion characteristic arises. In this work the linearization is realized by means of negative resistance modeling by positive feedback introduction. The questions of stability are reviewed; also done is the estimation of initial and residual nonlinearities for the purpose of determining the achievable precision of temperature narrow limits measurement in working conditions.

Keywords

feedback; linearisation techniques; negative resistance; platinum; stability; temperature measurement; thermometers; transducers; 20 kohm; negative resistance modeling; nonlinear characteristics; platinum; positive feedback; precision measuring converter; residual nonlinearities; resistance thermal converter; resistive transducers linearisation; stability; temperature narrow limits measurement; thermometers; Current measurement; Electric resistance; Electrical resistance measurement; Feedback circuits; Platinum; Resistors; Sliding mode control; Temperature measurement; Temperature sensors; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Control, 2003. Proceedings. 2003 International Conference

Print_ISBN

0-7803-7939-X

Type

conf

DOI

10.1109/PHYCON.2003.1236819

Filename

1236819