一种振梁式加速度计非线性度参数的自动测量装置设计与实现

Design and Implementation of an Automatic Measuring Device for Nonlinear Parameters of Vibrating beam Accelerometer

目前,振梁式加速度计非线性度参数测量方法主要是将加速度计固定在离心机转台上,人为手动控制离心机转台转速,稳定后记录加速度输出;待所有加速度值测试完成后,通过数据处理软件计算出非线性度参数;但该方式效率较低,且一般都是单套产品进行测试,不适合大批量产品产生需求;鉴于解决上述测量效率问题,满足产品的批量生产需求,本设计提出一种测量方法,即同时测试多套振梁式加速度计非线性度参数的自动测量装置;试验结果表明:文章设计的测量装置,不仅实现了自动化进行多套加速度计同时测量,提高了测量效率,而且提出了一种便捷计算加速度计到离心机中心距离半径的方法,从而计算出实际作用于加速度计的g值,提高了测量精度。

Aimed at exiting measurement methods of nonlinear parameters of vibrating beam accelerometer, an accelerometer is mainly fixed on the centrifuge turntable, the rotation speed of centrifuge turntable is manually controlled to record the acceleration output after the rotation speed stabilization. After all accelerations are tested, the nonlinear parameters are calculated by the data processing software. However, the efficiency of this method is low, and it is generally tested by single acceleration, which is not suitable for the test demand of large-scale products. In order to solve problem and meet the requirement of mass products, an automatic measurement device for simultaneously testing the nonlinear parameters of multiple vibrating beam accelerometers is proposed. The test results show that the device realizes the automatic measurement of multiple accelerometers at the same time and improves the measurement efficiency, and a convenient method is proposed to calculate the radius of the distance between the accelerometer and center of the centrifuge, so as to calculate the g value of the accelerometer, which improves the measurement accuracy.