空间稳定系统壳体翻滚失准角误差精确补偿

发布时间：2018-01-06 15:34

本文关键词：空间稳定系统壳体翻滚失准角误差精确补偿　出处：《中国惯性技术学报》2014年05期 　论文类型：期刊论文

【摘要】：壳体翻滚是提高空间稳定系统长时间工作精度的技术手段之一,但其失准角误差将引起速度和姿态扰动。对该误差进行建模、标定与补偿是解决此问题的有效措施。在误差补偿时,由冗余角变化导致的交叉耦合影响对长航时高精度惯导系统是不能忽视的。根据壳体翻滚失准角误差矢量的几何投影关系,建立物理平台坐标系(P系)与陀螺三面体坐标系(G系)之间的坐标转换关系,分析冗余角变化引入的交叉耦合影响,并进行计算机仿真和实际试验。结果表明:冗余角使P系相对G系沿z向的角运动附加极轴壳体翻滚周期分量,其幅值为失准角与冗余角正切函数的乘积;误差补偿考虑这一项,东速、横摇和航向精度十天可提高30%~50%。
[Abstract]:Roll shell is to improve the means of precision long time space system is stable, but the misalignment angle error caused by velocity and attitude disturbance. Modeling of the error calibration and compensation is an effective measure to solve this problem. The error compensation, the redundant angle cross coupling effects caused by the change of lead can't be ignored for long endurance and high accuracy inertial navigation system. According to the case rotation misalignment geometric projection angle error vector, a physical platform coordinate system (P system) and the gyro three surface body coordinate system (G) conversion relationship between the coordinate effect of cross coupling, redundancy angle, and computer simulation and the actual test. The results show that the angle of the Department of P relative G redundant system along the Z angle motion to additional polar axis rolling shell periodic component, the amplitude of the misalignment angle and the angle of product redundant tangent function; error compensation considering this, East Speed, roll and heading accuracy for ten days can be increased by 30%~50%.

【作者单位】：清华大学精密仪器系;
【基金】：总装“十二五”预研项目(51309030401)
【分类号】：TN96
【正文快照】： 采用旋转调制技术,可在无外部参考信息条件下,自动地补偿惯性仪表固有误差,因而能有效提高惯性测量组合和由其组成的惯性导航系统的精度[1-2],在平台式和捷联式惯性导航系统中获到广泛应用[3-4]。旋转调制技术主要有壳体翻滚和台体翻滚两种实现方式,目的都在于平均与壳体或与

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