摘要
提出一种快速检测汽车底盘制造和修复精度的测量方法并研发仪器样机。运用5参数MDH建模方法构建测量模型和测量误差模型,根据底盘结构及尺寸的特点专门研制三维球列实体标定物,以高斯-牛顿法来辨识系统结构参数,从而完成仪器结构参数的标定。实验结果表明:与标定前相比仪器精度有显著提高,该标定方法合理有效。
A measuring method and measuring prototype for quickly detecting the manufacturing and repairing accuracy of automobile chassis have been presented in the paper. Kinematic models and measurement error models were established with the 5-parameter MDH method. A 3D ball grid array was developed in accordance with the chassis structures and sizes. The traditional Gauss-Newton iterated algorithm was adopted to identify the system structure parameters so as to calibrate the instrument structure parameters. The experimental results have shown that the calibration method is reasonable and effective and has promoted the accuracy of the measuring instruments.
出处
《中国测试》
北大核心
2015年第6期60-63 80,共5页
China Measurement & Test
基金
国家自然科学基金项目(51175140)
高校博士点基金项目(20130111110021)
关键词
底盘测量
标定
5参数MDH模型
三维球列
chassis measurement
calibration
5-parameter MDH model
3D ball grid array
