基于磁阻传感器的末制导迫击炮弹滚转姿态初始对准技术研究

Research of Terminal-guide Mortar Bomb Roller Attitude Initial Alignment Technique Based on Magnetic Resistance Sensor

在末制导迫击炮弹控制时,需要知道迫击炮弹的实时姿态角。迫击炮弹在发射时具有高过载,使得陀螺等传统姿态角测量系统无法工作。文中提出了使用磁阻传感器,利用地磁矢量信息对弹体滚转姿态角进行辨识,并对自动驾驶仪滚转姿态进行空中初始对准的低成本方案。仿真结果显示,该方法具有较高的滚转姿态初始对准精度。

For controlling a terminal-guide mortar bomb,attitude angles of the mortar bomb are needed in real-time. The attitude measurement system which consists of gyro can＇t adapt to high over loading at mortar bomb launching moment. Therefore, a low cost system which applies magnetic resistance sensors and geomagnetism vector to detecting mortar bomb roller attitude and aligning roller attitude autopilot in the air was proposed. The simulation results indicate that the system can achieve proper precision for initial alignment of roller attitude.