基于地磁线圈传感器的包络标定转速算法研究

Envelope Calibration Algorithm Based on Geomagnetic Coil Sensor

对用于测量弹体转速的地磁线圈传感器提出了一种基于求取包络的标定方法。由于地磁线圈传感器在地磁场中转动时的输出具有特定的规律,因此需要建立合适的算法来进行标定。首先分析了地磁线圈的输出规律,并对常用的标定方法进行了改善,得到了基于地磁线圈传感器的包络标定算法。之后通过速率实验,验证了基于包络的转速标定方法的合理性。

A calibration method based on striking envelope for geomagnetic coil sensor to measure the speed of the missile body was pro- posed. Since when the geomagnetic coil sensor is rotating in earth magnetic field, the output having a specific rule, it is necessary to estab- lish a suitable algorithm for calibration. In the first place, the geomagnetic coil output regular pattern was analyzed the , and improves the common used calibration methods, then gets the envelope calibration method based on geomagnetic coil sensor algorithm. Afterwards, Through the rate experiments, the reasonableness of envelope-based speed calibration is verified.