Error compensation of MEMS gyroscope used in rocket artillery launcher disturbance detector

摘要

The accuracy of MEMS gyroscope is affected by ambient temperature, its zero output voltage value will be offset with the change of temperature. In this paper, the precision of gyroscope is compensated by establishing a mathematical model of temperature-zero output voltage. In order to ensure the accuracy of temperature measurement, several temperature sensors are used to measure the temperature of gyroscope's working environment, and the multi-sensor data fusion method based on Bayes estimation is used to fuse the temperature values in order to get more accurate temperature values, and the zero output voltage values corresponding to these temperature values are measured. The mathematical model of temperature-zero output voltage is obtained by using Gauss curve fitting, so that in later data processing, we can compensate for the zero output voltage value of gyroscope according to ambient temperature.