Time- and computation-efficient calibration of MEMS 3D accelerometers and gyroscopes

Stančin, Sara (author), Tomažič, Sašo (author)

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.

• Language: English
• Keywords: MEMS sensors, accelerometer, gyroscope, sensor calibration, general 3D sensor model, simultaneous orthogonal rotations angle (SORA)
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2014
• Number of pages: Str. 14885-14915
• Numbering: Vol. 14, iss. 8
• PID: 20.500.12556/RUL-130804
• UDC: 681.586
• ISSN on article: 1424-8220
• DOI: 10.3390/s140814885
• COBISS.SI-ID: 10764628
• Publication date in RUL: 17.09.2021

Record is a part of a journal

• Title: Sensors
• Shortened title: Sensors
• Publisher: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licences

• License: CC BY 3.0, Creative Commons Attribution 3.0 Unported
• Link: https://creativecommons.org/licenses/by/3.0/deed.en
• Description: You are free to reproduce and redistribute the material in any medium or format. You are free to remix, transform, and build upon the material for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
• Licensing start date: 13.08.2014

Secondary language

• Language: Slovenian
• Keywords: MEMS senzorji, pospeškometer, žiroskop, kalibracija senzorjev, splošni modeli 3D senzorja, kot istočasnih ortogonalnih rotacij

Projects

• Funder: ARRS - Slovenian Research Agency

• Funder: EC - European Commission
• Funding programme: European Regional Development Fund