一种六维加速度传感器的测量属性分析
发布时间：2019-05-24 10:05
【摘要】：本文研究的六维加速度传感器为并联机构,旨在用于低频作业装备下的小量程加速度测量。为了能够准确地获取传感器的测量属性,采用并联机构的守恒转换的方法求解传感器的刚度矩阵,通过对传感器的简化建立系统的无阻尼自由振动模型,获得传感器固有频率求解的理论表达式,对双悬臂梁弹性元件进行分析,计算获得悬臂梁弯曲应力与上平台加速度加载的关系曲线,利用有限元分析仿真确定传感器的测量范围,经过实验验证,证明该传感器在16 Hz,x轴方向0~10 m/s2的加载状态下传感器测量电压与加速度加载量之间具有良好的线性关系,传感器的线加速度精度为1.3%。
[Abstract]:The six-dimensional acceleration sensor studied in this paper is a parallel mechanism, which is designed to be used for small range acceleration measurement under low frequency operating equipment. In order to obtain the measurement properties of the sensor accurately, the stiffness matrix of the sensor is solved by the conservation transformation method of the parallel mechanism, and the undamped free vibration model of the system is established by simplifying the sensor. The theoretical expression of the natural frequency of the sensor is obtained, the elastic elements of the double cantilever beam are analyzed, and the relationship curve between the bending stress of the cantilever beam and the acceleration loading of the upper platform is calculated. The measurement range of the sensor is determined by finite element analysis and simulation. The experimental results show that there is a good linear relationship between the measured voltage and the acceleration loading of the sensor under the loading condition of 0 鈮，
本文编号：2484777
[Abstract]:The six-dimensional acceleration sensor studied in this paper is a parallel mechanism, which is designed to be used for small range acceleration measurement under low frequency operating equipment. In order to obtain the measurement properties of the sensor accurately, the stiffness matrix of the sensor is solved by the conservation transformation method of the parallel mechanism, and the undamped free vibration model of the system is established by simplifying the sensor. The theoretical expression of the natural frequency of the sensor is obtained, the elastic elements of the double cantilever beam are analyzed, and the relationship curve between the bending stress of the cantilever beam and the acceleration loading of the upper platform is calculated. The measurement range of the sensor is determined by finite element analysis and simulation. The experimental results show that there is a good linear relationship between the measured voltage and the acceleration loading of the sensor under the loading condition of 0 鈮，
本文编号：2484777
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