Analysis of the influence of quantization error at sensor autocalibration

Author

Kralikova, Eva ; Ravas, Rudolf

Author_Institution

Fac. of Electr. Eng. & Inf. Technol., Slovak Univ. of Technol. in Bratislava, Bratislava, Slovakia

fYear

2010

Firstpage

74

Lastpage

77

Abstract

The paper treats the auto-calibration of sensors based on the test method that allows correction of additive, multiplicative and linearity error of sensor. Test method is based on the local approximation of nonlinear conversion function by linear dependence. The degree of approximation depends on parameters modifying measured signal. Paper presents the analysis of relationship among mentioned approximation parameters and quantization error of A/D (analog to digital) converter used for test method realization by microcomputer. Knowledge of those relationships allows definition of the requirements on values of modifying parameters of the described method and A/D converter resolution.

Keywords

calibration; error analysis; nonlinear functions; quantisation (signal); sensors; A/D converter; autocalibration; linear dependence; local approximation; nonlinear conversion function; quantization error; sensor; test method realization; Electric variables measurement; Error correction; Information technology; Linearity; Measurement standards; Paper technology; Polynomials; Quantization; Sensor phenomena and characterization; System testing; autocalibration; sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

MECHATRONIKA, 2010 13th International Symposium

Print_ISBN

978-1-4244-7962-7

Electronic_ISBN

978-80-8075-451-8

Type

conf

Filename

5521174