Development of a novel dynamic torque generation machine based on the principle of a Kibble balance

This paper presents a novel dynamic torque generator based on the principle of a Kibble balance. A generator is developed to dynamically calibrate torque-measuring devices (TMDs) for the measurement of dynamic torque. Unlike conventional gravity-based deadweight torque standards, this method uses electromagnetic force to generate a dynamic torque traceable to the International System of Units. Dynamic torque is generated by dynamically changing the electric current supplied to the coil. Consequently, dynamic torque is generated up to 100 Hz. Furthermore, a system is developed to simultaneously measure the electric current and output of a TMD to verify the evaluation method of the dynamic characteristics of the TMD.