正弦力计量校准研究  

Investigation on Sinusoidal Force Calibration

作　　者：曾利民[1] ZENG Limin(Zhejiang Province Institute of Metrology,Hangzhou 310018,China)

机构地区：[1]浙江省计量科学研究院,浙江杭州310018

出　　处：《计测技术》2020年第1期74-79,共6页Metrology & Measurement Technology

摘　　要：动态力是加速度的导出量,文章介绍了正弦力计量标准装置研究与量值溯源现状,并认为根据动态力定义用激光干涉法测量加速度直接溯源到质量、加速度和时间是正弦力计量发展方向。由于正弦力计量中运动部件各处加速度不相等,因而研究质量块加速度分布非常重要,文章采用圆板弹性动力学模型将质量块三维结构简化为一维结构研究加速度径向分布,再用杆件结构动力学模型进一步将质量块简化为质点研究加速度轴向分布,进而减少正弦力测量结果的不确定度。A dynamic force is the product of mass and acceleration.This paper describes the status of sinusoidal force measuring standard device and the development of sinusoidal force traceability.It is the development direction of the sinusoidal force measurement the acceleration is measured by a laser interferometer and traced directly to the mass,length and time according to the definition of dynamic force.In order to reduce the uncertainty of the sinusoidal force measurement,it is very important to accurately measure the acceleration distribution of the loading mass,the coupling between loading mass and force sensor,and the equivalent mass of force sensor end.Based on the elastic dynamics theory,the three-dimensional structure of the mass is simplified into a one-dimensional structure by using the circular plate elastic dynamic model to study the radial distribution of the acceleration.The dynamic model of the bar structure is further simplified into a point to study the axial distribution of the acceleration,and the accuracy of the measurement results of the sinusoidal force is improved.

关 键 词：正弦力 量值溯源 质量块 加速度 

分 类 号：TB9[一般工业技术—计量学]