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MATHEMATICAL MODEL OF ~4He QUANTUM INTERFEROMETER GYROSCOPE 被引量:5
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作者 郑睿 赵伟 +2 位作者 刘建业 谢征 冯铭瑜 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2012年第4期360-366,共7页
The mathematical model of 4He quantum interferometer gyroscope is presented. The model includes the driven equation, the current equation and the position equation. Therefore, it can sufficiently describe the gyro- sc... The mathematical model of 4He quantum interferometer gyroscope is presented. The model includes the driven equation, the current equation and the position equation. Therefore, it can sufficiently describe the gyro- scope system. The driven equation shows the thermally driven gyroscope can work for a long time but the pres- sure driven one cannot. From the current equation, the superfluid currents passing through the weak link contain the AC currents which show the rotation flux, and other currents caused by drive. As shown in the position equa- tion, the displacement of diaphragm is the only detectable parameter in the gyroscope system. The model is tested by the simulations based on experimental parameters, and can be used to research performance of the gyroscope and analyse the gyroscope error. 展开更多
关键词 4He quantum interferometer gyroscope mathematical model pressure drive thermal drive
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应用预测滤波估计卫星姿态
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作者 叶修松 吴星 赵东明 《测绘科学》 CSCD 北大核心 2009年第4期15-17,共3页
本文推导了预测滤波法的基本原理,应用了预测滤波作为卫星姿态状态预报算法,并与经典卡尔曼滤波进行了比较。实验表明采用预测滤波法对不同姿态角均能得出较好的估计结果,克服了经典卡尔曼滤波法进行估计存在的估计模型误差和推广卡尔... 本文推导了预测滤波法的基本原理,应用了预测滤波作为卫星姿态状态预报算法,并与经典卡尔曼滤波进行了比较。实验表明采用预测滤波法对不同姿态角均能得出较好的估计结果,克服了经典卡尔曼滤波法进行估计存在的估计模型误差和推广卡尔曼滤波(EKF)的线性化误差。 展开更多
关键词 预测滤波 卫星姿态 陀螺动力学模型
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