基于磁强计和MEMS陀螺的弹箭全姿态探测

Research on Attitude Determination Using Magnetometers and MEMS Inertial Sensors

在对弹道修正弹箭进行弹道修正时,需要获取弹体的实时角速率、姿态信息。文中提出了一种采用磁强计和MEMS陀螺构建低成本姿态探测系统的方案,给出了利用地磁测量、陀螺测量和弹道先验信息解算弹体姿态的算法。设计并制造了原理样机,利用该样机和单轴转台对滤波器进行了测试。有限的转台试验表明:该方案精度高、稳定性好,是一种有应用潜力的弹箭组合定姿方案。

For correcting the trajectory correctable munition, it is necessary to acquire the real time angular rate and the attitude of the rocket body. A low cost scheme of the full attitude detection system composed of magnetometers and MEMS gyroscope was proposed. An algorithm used for solving the attitude with geomagnetism measurement, gyro measurement and prior trajectory information was given. A principle prototype was design and fabricated, the filter was tested by the prototype and the single-axis turntable. The tested results show that the scheme has high precision, better stability and applied potential.