Sara Stančin (Author), Sašo Tomažič (Author)

Abstract

We propose calibration methods for microelectromechanical system (MEMS) 3D accelerometers and gyroscopes that are efficient in terms of time and computational complexity. The calibration process for both sensors is simple, does not require additional expensive equipment, and can be performed in the field before or between motion measurements. The methods rely on a small number of defined calibration measurements that are used to obtain the values of 12 calibration parameters. This process enables the static compensation of sensor inaccuracies. The values detected by the 3D sensor are interpreted using a generalized 3D sensor model. The model assumes that the values detected by the sensor are equal to the projections of the measured value on the sensor sensitivity axes. Although this finding is trivial for 3D accelerometers, its validity for 3D gyroscopes is not immediately apparent; thus, this paper elaborates on this latter topic. For an example sensor device, calibration parameters were established using calibration measurements of approximately 1.5 min in duration for the 3D accelerometer and 2.5 min in duration for the 3D gyroscope. Correction of each detected 3D value using the established calibration parameters in further measurements requires only nine addition and nine multiplication operations.

Keywords

MEMS senzorji;pospeškometer;žiroskop;kalibracija senzorjev;splošni modeli 3D senzorja;kot istočasnih ortogomalnih rotacij;MEMS sensors;accelerometer;gyroscope;sensor of calibration;general 3D sensor model;simultaneous orthogonal rotations angle;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FE - Faculty of Electrical Engineering
UDC: 681.586
COBISS: 10764628 Link will open in a new window
ISSN: 1424-8220
Views: 172
Downloads: 63
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: MEMS senzorji;pospeškometer;žiroskop;kalibracija senzorjev;splošni modeli 3D senzorja;kot istočasnih ortogonalnih rotacij;
Type (COBISS): Article
Pages: str. 14885-14915
Volume: ǂVol. ǂ14
Issue: ǂno. ǂ8
Chronology: Aug. 2014
DOI: 10.3390/s140814885
ID: 13462446