Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2016-02-15

Journal: 压电与声光

Included Journals: CSCD、ISTIC、PKU、Scopus

Volume: 38

Issue: 1

Page Number: 46-50,54

ISSN: 1004-2474

Key Words: 归一化;压电测力仪;灵敏度;矢量力;测试精度

Abstract: 分析归一化标定时,加载力偏差对压电测力仪矢量力测试精度的影响.通过对理论推导可得,归一化标定加载偏差使电荷放大器归一化灵敏度改变,并增大了横向干扰输出,导致测力仪对矢量力测量产生偏差,降低了测试精度.通过实验对小力值矢量力进行测试,调整加载杆连接方式减小加载力偏差,测力仪横向干扰降低38.8％以上,矢量力参数不确定度最多减小53.9％.