PTB-News 2.2018 – The reliable measurement of dynamic forces plays an important role in industry. To provide the metrological infrastructure required, PTB has been pursuing an approach that describes the dynamic behavior of the force transducer by means of a mathematical model. The transducer and the calibration device are modeled as a series arrangement of mass-springdamper elements. The mass, the stiffness and the damping parameters of the force transducer are identified applying the model equation to dynamic measurement data. The goal is the general characterization of the dynamic behavior, irrespective of the particular measuring application or the type of force excitation. Calibrations with shock or sine excitations should provide consistent parameters.
