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针对光纤陀螺姿态测量系统中利用角速率拟合角增量进行圆锥误差补偿精度下降的问题,在陀螺仪角速率输入下,采用参数解析法优化的三子样算法,直接利用陀螺的角速率输出进行圆锥误差补偿。同时考虑工程实际中滤波器的影响,推导滤波角速率输入下三子样误差补偿算法的具体表达形式。仿真分析表明:参数解析法优化的角速率输入圆锥误差补偿算法优于传统算法;而针对滤波器引入的不可忽略的算法误差,可通过修正圆锥算法系数进行补偿。
Aiming at the problem that the accuracy of coning error compensation is reduced by using the angular rate fitting angular increment in the FOG attitude measurement system, the gyroscope angular rate output is directly used by the gyroscope angular rate input Cone error compensation. At the same time, considering the influence of the filter in engineering practice, the concrete expression form of error compensation algorithm of three subsamples with filter angular velocity input is derived. The simulation results show that the cone-error compensation algorithm based on parameter analysis is better than the traditional one. However, the algorithm error that can not be neglected by the filter can be compensated by modifying the coning algorithm coefficients.