基于虚拟仪器技术的力锤动态校准系统

Research on a dynamic calibration system of force-hammer based on virtual instrument technology

力锤在模态试验与静态标定中存在一定的差异。对一种力锤动态校准系统作了介绍。该系统模拟力锤在工程测量时的使用环境,敲击产生脉冲力,与标准动态力传感器比较对力锤进行校准。结合虚拟仪器技术实现了力锤动态校准系统的软硬件设计。评定了该系统的不确定度。

There are some differences in force-hammer between mode test and static calibration. A dynamic calibration system is introduced. The system generates the impulse force simulating application environment of force-hammer in engineering survey. Force-hammer is calibrated by compared with standard dynamic force transducer. The dynamic calibration system of force-hammer is realized based on virtual instrument technology. The uncertainty of the system is assessed.