Dynamic force calibration method for force transducers based on sine forceload

XIE Wei-dong，YIN Hao

（Institute of Vehicle Engineering，Zhejiang University of Technology，Hangzhou 310014，China）

Abstract：Aiming at the problem of low accuracy and poor repeatability in the area of dynamic force calibration for force transducers，a new method for calibrating force transducers based on sine force load was proposed. The calibration method was introduced in detail. The working principle of the sine mechanism which is the most important part of the calibration system was explained. The output amplitude of the force transducer and the displacement transducer were calculated by least squares fit. The data processing program was designed in

which the dynamic sensitivity of the force transducer could be precisely calculated. The experiment platform was created and the calibration experiment of Interface 1010AJ force transducer from 1 Hz to 5 Hz was carried out. The results indicate that，the new dynamic force calibration method has fine precision and the measurement uncertainty is below 1.5%.