DINTOR - Fundamentals for the Realization and Measurement of Dynamic Torque (Dynamic properties of structural elements for application in dynamic torque standards at primary level)

利用动态力测量和称重的实际研究成果，特别是对构件动态特性的实验和数值分析，可以更深入地理解、改进和不确定性分析。对部件和整个系统进行详细的不确定度分析，需要对整个扭矩主标准机组的复杂系统进行静态和动态模型的结合，还需要综合考虑温度和湿度等不必要的干扰影响。选择合适的模型类型，用实验数据验证称重传感器、联轴器和杠杆动态特性的数值模型，本质上是为了证明可追溯性。小的力和扭矩的结果是非常有希望的，但需要扩大范围和速度，这是不可能通过扩大规模，但需要新的设计和想法。我们的联合项目旨在进一步开发50至100 Nm范围内的主要动态扭矩标准，频率高达50 Hz，可追溯到静态基本扭矩标准和一个演示器设置。除了计量重要性外，该领域还对汽车，绿色能源和建筑等许多工业应用产生了重大影响。德方提案的目的是通过研究复杂系统的静态和动态组合模型来支持新的主动态扭矩标准演示器的建立，这些模型目前还没有，但对建立的构建、理解和改进是必要的。

Using of actual research results of dynamic force measurement and weighing especially the experimental and numerical analysis of dynamic properties of components could allow deeper understanding, improving and uncertainty analysis. The detailed uncertainty analysis of components and complete system requires combined static and dynamic models of the complex system of the whole torque primary standard unit and also need to integrate unwanted disturbing influences like temperature and humidity. Selecting the appropriate type of model and verifying the numerical models of dynamic properties of the load cell, couplings and levers with experimental data is essentially to proof traceability. The results of small force and torque are very promising but need to be extended in range and speed which is not possible by just scaling up but requires new designs and ideas. Our joint project aims to further develop primary dynamic torque standards in the range of 50 to 100 Nm with frequencies up to 50 Hz that are traceable to static fundamental torque standards and to one demonstrator set-up. Besides the metrological importance this field has a great impact on many industrial applications like automotive, green energy and construction. The aim of the German side proposal is to support the set-up of the new primary dynamic torque standard demonstrator by research on combined static and dynamic models of the complex system that are currently not available but necessary the construction, understanding and improvement of the set-up.