六维加速度的测量研究

A Study on Measuring Six-axis Acceleration

通过六轴加速度计或全加速度计组合等方法 ,能够获取空间运动物体的六维加速度信息。在分析几种典型的六轴加速度计的结构、测量原理的基础上 ,以电阻应变式六轴加速度计为例 ,提出以加速度计质量块坐标系为参考坐标系 ,由已知六个相互线性独立的加速度组成输入矩阵 ,相应的测量输出值组成输出矩阵 ,经矩阵运算来获取传感器特性矩阵 ;并进行了理论分析与论证。结果表明 ,这种方法能够实现传感器的标定。

The six-degree of freedom (DOF) acceleration of an object can be measured with six DOF accelerometer, or all-accelerometer, etc. Based on analyzing the structure and the measuring principle of several six DOF accelerometers, this paper gave a method of six DOF accelerometers calibration, which the characteristic matrix of the sensor could be obtained by matrix calculation of an input matrix and output matrix in the seismic-mass reference frame. The input matrix consisted of six linear independence acceleration vectors, and the output matrix consisted of the corresponding measuring output. This method was testified with the analysis of a kind of double E-type structure monolithic six DOF accelerometer. The result indicated the method is feasible.