Publicou 12 edições por ano
ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009
Indexed in
AN ESTIMATION OF THE MEMS GYROSCOPE ERROR BASED ON THE KALMAN FILTER ALGORITHM
RESUMO
MEMS inertial devices are more prominent on the size and cost advantages, but it is much to be desired at the aspect of resolution and accuracy. At present, it is unable to meet the precision requirements of the inertial posture measurement system. The research environment of this paper is the angular rate measurement system composed of MSMS gyroscopes and its sampling circuit. Under the analysis of multiple error components, the measurement errors of MEMS gyroscopes are corrected and compensated by using the Kalman filter algorithm. These errors are the zero-drift error, the scale-factor error, a non-linear square sensitive error, and acceleration-sensitive error. Experimental results show that the various error factors of MEMS gyroscope have a relatively large effect on small angular rate but their effects can be ignored for running time at high angular rate. Thus, the gyroscope working in small angular rate must be revised in accordance with the results of calibration curve.
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