摘要
针对车轮弯曲疲劳试验机由于传感器安装误差使得弯矩检测的非正交误差,难以达到国标规定的动态加载精度要求的问题,分析了非正交误差对弯矩检测精度的影响,建立了非正交误差修正模型,直接利用弯矩实测值经相关运算确定修正参数,并给出了该修正法的评价模型。理论分析和试验结果表明:该修正方法有效;采用该修正法,弯矩检测误差由4.6%降低到1%以下,提高了车轮动态加载精度,满足了本试验机弯矩加载精度要求。
In view of the problem that the wheel bending fatigue tester is difficult to meet the requirements of national standard on dynamic loading accuracy due to the non-orthogonal error in measuring bending moment caused by sensor installation error, the effects of non-orthogonal error on the measurement accuracy of bending mo- ment are analyzed. A model for correcting non-orthogonal error is established, which directly uses the real measured value to determine the correction parameter with related calculations, and a model for evaluating the correction method is also worked out. The results of theoretical analysis and test show that the correction method proposed is effective. The measurement errors of bending moment reduce from 4. 6% to 1% by using the correction method, which enhances the accuracy of wheel dynamic loading and meets the requirements of nationat standard on the ben- ding moment loading accuracy of tester.
出处
《汽车工程》
EI
CSCD
北大核心
2013年第9期832-835,共4页
Automotive Engineering
基金
吉林省科技支撑基金(20100371)资助
关键词
动态弯矩
非正交误差
修正模型
dynamic bending moment
non-orthogonal error
correction model
