【作者】 王世昌；

【导师】 秦丽； 张会新；

【作者基本信息】 中北大学 ， 测试计量技术及仪器， 2009， 硕士

【摘要】 全加速度计微惯性测量组合就是指惯性测量组合中不用陀螺测量角速度,而在利用线加速度计测量线加速度的同时,根据线加速度计的空间位置组合解算出角速度,从而得到惯性测量的全部参数,达到姿态测算的目的。该组合具有抗高加速度值冲击、低功耗、小体积、低成本的特点,适用于某些特定场合,如战术导弹、智能炮弹等。因此,对全加速度计阵列惯性测量组合的研究不但具有重要的学术意义,而且在国防领域也有重要的应用价值。由于加速度计自身的因素,加速度计输出存在刻度因子、固定偏置、安装、耦合等误差,因此需要对加速度计各误差系数进行标定。加速度计标定的前提是必须建立相应的加速度计误差输出模型,本文在十二加速度计配置方案的基础上建立了新的加速度计误差输出静态和动态模型,在此基础上对加速度计各项误差系数进行标定,通过误差修正,最终实验结果表明该了方法的有效性。更多还原

【Abstract】 In an all accelerometers micro inertial measurement unit,the accelerometers are not only used to acquire the linear acceleration, but also replace the gyroscopes to compute the angular rate according to their positions in three-dimension space,which has the advantages of anti-high g value shock, low power consumption,small volume and low cost. It can be applied to some specific occasions such as the tactic missiles, the intelligent bombs and so on. So, the study on it has not only the important academic significance but also the application values in the field of national defense.In virtue of its own factors,accelerometer has Scale factor error, bias, random noise and assemble error which are Direction error , location error, coupling error and so on.So,we should demarcate all of the error coefficient of the accelerometer.Accelerometer calibration must be established on the premise that the accelerometer output model, this paper established a new static and dynamic accelerometer error output model based on twelve accelerometers’configuration. Calibrationed coefficients the error of the accelerometer on the basis of the error utput model, through error correction, the final experimental results show that the effectiveness of the proposed method.更多还原