Title :
Low Cost and Automatic Calibration for MEMS Gyroscope
Author :
Li, Zemin ; Duan, Fengyang
Author_Institution :
Aeronaut. Control & Eng. Dept., Aviation Univ. of Air Force, Changchun, China
Abstract :
A low cost and automatic calibration method for micro-electro mechanical systems (MEMS) gyroscope is presented in this paper, which requires no precise alignment instrument. The deterministic gyroscope errors are modeled as a nonlinear equation with 9 unknown parameters (3 biases, 3 scale factors and 3 non-orthogonally angles). And then estimating the unknowns with a nonlinear least squares adjustment method by using a redundant number of rotations. A single-axis turntable is used to provide a strong reference rotation rate for the estimation of these parameters. The performance of this calibration method is tested by using a particular MEMS gyroscope, STIM202.
Keywords :
calibration; gyroscopes; least squares approximations; microsensors; nonlinear equations; MEMS gyroscope; STIM202; automatic calibration method; gyroscope errors; microelectromechanical system gyroscope; nonlinear equation; nonlinear least squares adjustment method; single-axis turntable; Accuracy; Calibration; Gyroscopes; Mathematical model; Micromechanical devices; Production facilities; Sensors;
Conference_Titel :
Engineering and Technology (S-CET), 2012 Spring Congress on
Conference_Location :
Xian
Print_ISBN :
978-1-4577-1965-3
DOI :
10.1109/SCET.2012.6341968
