Comparison results between PTB and CIMM on the force transducer calibration under sinusoidal loading

摘要

Sinusoidal force is a typical kind of dynamic force applied widely in practice, and the sinusoidal force calibration systems are set up in Physikalisch-Technische Bundesanstalt(PTB) and Changcheng Institute of Metrology & Measurement(CIMM) respectively. To examine and compare the measurement methods for force transducer calibration, a comparison on sinusoidal force calibration is taken between PTB and CIMM. The experiment results show that the absolute value of the normalized error En between both sides is always less than 1, in the frequency range from 20Hz to 2000Hz, by using mass blocks A(nominal 1kg) and B(nominal 2kg). While the large deviation corresponding to the mass block C(nominal 4kg) at frequencies higher than 1000Hz may be contributed to some rocking effect at high frequency.