Scientific Fundamentals for the Realization and Measurement of Small Torques - Development of a Torque Standard Machine for Small Torques with Reduced Uncertainty - DEBRATOR 2

项目的主要目标是显著降低小扭矩测量的可实现的相对扩展不确定度，并借助演示来验证这一点。在前期工作中，已经检测到了关键的不确定性影响，并制定了减少这些影响的措施。这些措施需要详细说明，并进行实验验证。这些措施之一是使用高精度轴承，其应用是建立第一个里程碑。另一个里程碑是验证了一种确定杠杆长度的新测量方法。这将大大减少长度的不确定性影响。第三个里程碑建立了主要目标，验证从1mN·m到1N·m的小扭矩的实现，测量的相对扩展不确定度Ur=1.10-5(k=2)。最后一个里程碑是记录结果，作为开发和操作小型扭矩标准机的建议和指南。

The main project objective is to reduce the achievable relative expanded uncertainty of measurement for small torques significantly and to verify this with the help of a demonstrator. In preliminary works, the critical uncertainty influences has been detected and measures to reduce these influences has been developed. These measure needs to be detailed and verified experimentally. One of these measures is the use of a high precision bearing, whose application is builds the first milestone. Another milestone is the verification of a new measuring method to determine the lever length. This will reduce the uncertainty influence of the length significantly. The third milestone builds the main objective, the verification of the realization of small torques from 1 mN•m to 1 N•m with a relative expanded uncertainty of measurement Ur = 1•10-5 (k=2). The last milestone is the documentation of the results as recommendations and guidelines for the development and the operation of small torque standard machines.