抵肩力测量中动态修正问题探讨

SOME INQUIRIES INTO DYNAMIC CORRECTIONS FOR SHOULDER-SUSTAINING FORCE MEASUREMENT

本文简要介绍了采用双剪切梁式应变测力传感器测量抵肩力的系统组成,对测得的原始抵肩力信号作了深入的分析和讨论,提出了消除加速度影响的动态修正方法,并给出了经加速度修正后抵肩力信号滤波的截止频率的选择依据。

This paper describes briefly the arrangement of a shoulder-sustaining force measurement system, in which a home-made double-shear beam strain gauge force transducer is adopted. The origenal signals obtained from measurements are analysed and discussed in detail. The dynamic correction method for eliminating the acceleration effects is put forward. Then the basis is given for selecting the cut-off frequency of signal filtering after acceleration effects are corrected.