| 加速度计二次奇异项系数的形成机理与标定方法 |
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| 引用本文： | 邢海峰,任顺清,祁家毅,陈雪.加速度计二次奇异项系数的形成机理与标定方法[J].航天控制,2009,27(2). |
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| 作者姓名： | 邢海峰 任顺清 祁家毅 陈雪 |
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| 作者单位： | 哈尔滨工业大学空间控制与惯性技术研究中心,哈尔滨,150001 |
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| 摘 要： | 讨论了加速度计二次奇异项系数koq的形成机理及标定方法.分析表明,在离心机上进行加速度计标定时,离心机转臂的拉伸、加速度计敏感质量的偏移、离心机主轴的圆锥运动、主轴的速率平稳性、以及脉冲捕获式加速度计的发热等都会引入附加的二次奇异项系数koq并且证明了加速度计进行离心机试验时,如果不引入koq系数或不补偿相应的误差源,将对k3和k10等系数的标定精度产生影响.在误差模型中加上这一项,有助于提高加速度计的标定精度,从而提高导航精度.但是在加速度计实际应用中,对koq的补偿并不是必须的.
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| 关 键 词： | 二次奇异项系数 精密离心机 加速度计标定 |
The Mechanism and Calibrating Method of Accelerometer Odd-quadratic Coefficient |
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| XING Haifeng,REN Shunqin,QI JiaYi,CHEN Xue.The Mechanism and Calibrating Method of Accelerometer Odd-quadratic Coefficient[J].Aerospace Control,2009,27(2). |
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| Authors: | XING Haifeng REN Shunqin QI JiaYi CHEN Xue |
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| Institution: | XING Haifeng REN Shunqin QI JiaYi CHEN XueSpace Control , Inertial Technology Research Center,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: | The mechanism and calibrating method of accelerometer odd-quadratic coefficient are discussed.The contributions of the error sources to this coefficient,such as the arm stretching,the deflection of accelerometer effective center of mass(ECM),the cone movement of the principal axis,the periodic angular velocity variation and the self-heating of a pulse-capture accelerometer,are analyzed and expounded.It is proved that if koq is not added to the error model of the calibrated accelerometer,or the error sources... |
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| Keywords: | Odd-quadratic coefficient Precision centrifuge Accelerometer calibration |
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