基于LM算法的接触式轮廓扫描系统参数标定

为了解决接触式轮廓扫描仪由于部件安装不精确而对测量数据结果造成偏差的问题,分析了误差的主要来源,运用最小二乘法的思想,以残差平方和最小为优化目标建立系统的误差处理模型,提出并建立一套基于LM算法迭代求出系统参数的现场标定方法,并使用MATLAB软件编程验证了算法可行性且对算法进行了鲁棒性实验,仿真实验数据表明该算法可实...

Parameter calibration of contact contour scan system based on LM algorithm

In order to solve the contact profile scanner due to defective components are installed and the problem that the deviation caused by the result of the measurement data, this paper analyzes the main source of error, based on the idea of least square method, the minimum residual sum of squares as the optimization target processing error of the system model is established, and establish a set of based on LM algorithm iteration the field calibration method of system parameter, and using MATLAB software programming algorithm is verified the feasibility and robustness of algorithm in experiments, simulation experiments data shows that the algorithm can realize accurate calibration of system parameters and coordinates of correction, fast convergence rate, High accuracy can control the measurement error below 0.05 mm, Angle error control below 0.1°, greatly reducing the scanner′s manufacturing and installation accuracy requirements.