一种冲击加速度计校准新方法  

A new method for calibrating shock accelerometers

作　　者：曾利民[1] 曾汉 

机构地区：[1]浙江省计量科学研究院,浙江杭州310013 [2]浙江省建工集团有限责任公司,浙江杭州310012

出　　处：《爆炸与冲击》2013年第5期531-536,共6页Explosion and Shock Waves

基　　金：国家质检总局科技计划项目(2007QK143)

摘　　要：冲击加速度计校准的传统方法有绝对法、相对法和比较法。综合相对法和比较法的优点,提出了一种校准冲击加速度计的新方法—类比法。其标准加速度传感器可采用绝对法直接溯源到国家基准,并在同条件冲击作用下通过标准加速度传感器和被校加速度传感器互换,根据冲击力或动应变测量结果对被校加速度传感器幅值灵敏度、线性度与频率响应等技术参数进行校准,从而弱化了冲击力或动应变测量结果对冲击加速度校准的影响,测量准确度高。The conventional calibration methods for shock accelerometers include the absolute, relative and comparative methods. A new calibration method, analogy comparison was proposed by synthesizing the advantages of the relative method and the comparison method. In the calibration by applying the proposed analogy comparison method, the standard accelerometer can be traced to the national benchmark by using the absolute method, and based on the measured shock force and dynamic strain, the sensitivity, amplitude linearity and frequency response of the measured accelerometer can be cali- brated by exchanging the measured accelerometer with the standard accelerometer in the same shock condition. Thereby, the influences of the measured shock force and dynamic strain on the accelerometer calibration can be weakened and the shock accelerometer can be accurately calibrated.

关 键 词：爆炸力学 类比法 校准 冲击加速度计 冲击加速度 

分 类 号：O384[理学—流体力学]