摘要
给出了一种双磁路伺服式低频角振动台的结构原理,导出了角振动台的微分方程、频率特性、以及灵敏度计算公式。在国家级计量部门对角振动台的频率特性、灵敏度、波形失真度等进行了校准,在实验室内对角振动台的线性度、稳定性等技术指标进行了测试。测试结果表明,双磁路伺服式低频角振动台具有良好的性能,计算结果和测试结果吻合。可用于强震转动加速度计及其他转动传感器的校准和检测。
Based on the structural principle of a double magnetic circuit servo low frequency angular vibration ta- ble, several technical indexes were derived, such as its formula of differential equation, frequency characteristics and sensitivity. Some technical indexes of the angular vibration table were calibrated in the National Calibration De- partment, such as the frequency characteristics, sensitivity and waveform distortion. The others were measured in the laboratory, such as the linearity and stability. According to the results, it can be shown that the double magnet- ic circuit servo low frequency angular vibration table has a good performance. The calculation conforms to the test. It can be used for the rotation sensors calibration, especially for the strong motion rotational accelerometers.
出处
《地震工程与工程振动》
CSCD
北大核心
2015年第2期132-137,共6页
Earthquake Engineering and Engineering Dynamics
基金
国家高技术研究发展计划(863计划)"城市燃气管网地震安全监控和紧急处理系统及其应用研究"(2012AA040607)
中国地震局工程力学研究所基本科研业务费专项"地震转动加速度计及其标定设备研究"(2013B06)
关键词
双磁路
低频
角振动台
强地震
转动传感器
double magnetic circuit
low frequency
angular vibration table
strong motion
rotational sensors
