虚拟陀螺技术在MEMS惯性导航系统中的应用
DOI: 10.3969/j.issn.1006-7043.2009.10.008
Keywords: 惯性导航 虚拟陀螺 卡尔曼滤波 误差补偿 inertial navigation system virtual gyro Kalman filter error compensation
Abstract:
针对MEMS惯性导航系统中陀螺测量精度低的问题,采用虚拟陀螺技术提高陀螺的角速度测量精度.系统中每个测量轴放置了3个普通精度的陀螺,组成一个阵列,对同一角速度信号进行冗余检测,然后通过同类传感器信息融合技术得到输入角速率的高精度估计值.试验结果表明,虚拟陀螺的精度最大提高了2.7倍,最小1.9倍,证明了虚拟陀螺技术的有效性.
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