带误差补偿的二位置寻北仪设计  

Design of Two-Position Gyro-Based North Seeker with Error Compensation

作　　者：王毅[1] 赵忠[1] 卫育新[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《兵工自动化》2005年第4期56-56,58,共2页Ordnance Industry Automation

摘　　要：带误差补偿的二位置寻北仪系统包括电源、转机结构、控制电路、计数器等。其补偿算法推导基于陀螺和加速度计一次误差补偿模型,以降低陀螺随机漂移及加速度计的零位漂移对寻北精度的影响。同时再利用由典型静态误差源产生的寻北误差与方位角三角函数成正比或为常值,以罗差修正寻北结果进一步提高寻北精度。The system of Two-Position gyro-based north seeker with error compensation includes power supply, turning device, control circuit and counter etc. On the basis of an error compensation model for Gyro and accelerometer,the formula of Two-Position gyro-based north seeking was deduced. Trigonometric function of azimuth and north seeking error created by static error source is direct ratio or constant value. The north seeking result is modified with magnetic deviation to reduce the gyroscope drift and accelerometer zero drift to influence on north-seeking accuracy. It can be improved the accuracy of north seeking by the use of the magnetic deviation amendatory algorithm.

关 键 词：寻北仪 陀螺漂移 误差补偿 罗差 

分 类 号：V241.534[航空宇航科学与技术—飞行器设计] TP273.2[自动化与计算机技术—检测技术与自动化装置]