Quasi-constant rotational stiffness characteristic for cross-spring pivots in high precision measurement of unbalance moment
Quasi-constant rotational stiffness characteristic for cross-spring pivots in high precision measurement of unbalance moment
复制标题
高精度不平衡力矩测量中十字弹簧枢轴的准恒定旋转刚度特性
DOI：
10.1016/j.precisioneng.2015.08.013
复制
发表时间：
2016
影响因子：
3.6
通讯作者：
Zhao, Hongzhe
中科院分区：
文献类型：
--
作者：
Bi, Shusheng;Zhang, Shuqing;Zhao, Hongzhe
This paper proposes a design method for cross-spring pivots with quasi-constant rotational stiffness in the field of unbalanced moment measurement. To achieve high precision measurement of unbalance moment, the relationship between instrument sensitivity and the rotational stiffness of the cross-spring pivot is revealed. In order to eliminate the impacts of payload changes on instrument sensitivity, the relationship between geometric parameters and the rotational stiffness of the pivot is studied. Further, cross-spring pivots with quasi-constant rotational stiffness are designed as the rotation unit of a static balancing instrument, while the center shift of pivot takes the minimum value. Certain amount of unbalance moments is measured by the instrument. Experimental studies of the instrument show that the maximum measurement errors of unbalance moments 0.162 g mm, 0.319 g mm and 1.300 g mm are 0.068 g mm, 0.086 g mm and 0.053 g mm, respectively, when the payload ranges from 0 g to 7000 g. The instrument can achieve a relatively high precision measurement and the instrument sensitivity is almost not affected by the changes of payloads. The effectiveness of the method and the stiffness property of the pivot are verified by the experiments. So this kind of pivot has good prospects in unbalance moment measurement.
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影响因子：
5.2
作者：
Hongzhe Zhao;S. Bi
通讯作者：
Hongzhe Zhao;S. Bi
影响因子：
5.2
作者：
B. Jensen;L. Howell
通讯作者：
B. Jensen;L. Howell
DOI：
10.1201/9781420040272
发表时间：
2002-11
期刊：
--
影响因子：
--
作者：
N. Lobontiu
通讯作者：
N. Lobontiu
DOI：
10.1117/12.778245
发表时间：
2008-04
期刊：
--
影响因子：
--
作者：
Daniel R. Otlowski;K. Wiener;B. Rathbun
通讯作者：
Daniel R. Otlowski;K. Wiener;B. Rathbun
DOI：
--
发表时间：
1985-04
期刊：
--
影响因子：
--
作者：
J. V. Eijk
通讯作者：
J. V. Eijk