Increasing the Force Torque Transducer Sensitivity of an RPA 2000 by a Factor 5 – 10 via Advanced Data Acquisition
Increasing the Force Torque Transducer Sensitivity of an RPA 2000 by a Factor 5 – 10 via Advanced Data Acquisition
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通过高级数据采集将 RPA 2000 的力扭矩传感器灵敏度提高 5 – 10 倍
DOI：
10.5254/1.3547811
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发表时间：
2004
影响因子：
1.5
通讯作者：
E. R. Rodger
中科院分区：
文献类型：
--
作者：
L. Hilliou;D. V. Dusschoten;M. Wilhelm;H. Burhin;E. R. Rodger
摘要RPA 2000在振荡剪切条件下的灵敏度可以扩展到低扭矩区域5 - 10倍。这将这款坚固耐用的工业仪器的整体动态范围提高到50倍。该动态范围接近学术环境中使用的流变仪。这种增加的灵敏度不是机械改进的结果，而是使用“运行中”平均在时域中对原始扭矩传感器输出进行先进但直接的数据处理的结果。这种方法通过现代ADC卡的可用性成为可能。这个平均过程的基本思想，连同聚乙烯的实验验证进行了详细描述。
Abstract The sensitivity of an RPA 2000 under oscillatory shear conditions can be extended by a factor of 5 – 10 into the low torque region. This increases the overall dynamic range of this robust industrial instrument to 5 decades. This dynamic range is close to that of rheometers used in academic environments. This increased sensitivity is not a result of mechanical improvement, but the result of an advanced, but straight forward, data treatment of the raw torque transducer output in the time domain using “on the fly” averaging. This method is possible through the availability of modern ADC-cards. The underlying ideas of this averaging procedure, together with experimental verification on polyethylene are described in detail.