基于MLS曲面拟合的碾压仓面平整度分析

Smoothness analysis of rolling storehouse surface based on MLS surface fitting

道路交通填筑工程碾压施工涉及平整度要求,平整度是反映碾压仓面凹凸情况的指标。利用GNSS、测量机器人等现代空间定位技术获取碾压机械施工过程中的三维位置信息,由于这些位置信息是离散的,需要借助于曲面拟合方法来描述仓面平整度情况。文中给出移动最小二乘曲面拟合算法,论述该方法进行仓面平整度拟合的流程。通过实例数据应用分析,表明该方法拟合精度高、曲面光滑好,能有效反映仓面平整度。

Smoothness is an index to reflect the concave and convex condition of rolling storehouse surface.GNSS positioning technology and georobot technology can be used to obtain three-dimensional space coordinate information in the construction process of the rolling machine,but these data are discrete,so it is necessary to carry out surface fitting to analyze the surface roughness of the silo.In this paper,the moving least square surface fitting algorithm is introduced,and the process of bin surface fitting is discussed.The application analysis is carried out through actual engineering data.The result shows that the method has high fitting accuracy and smooth surface,and can well reflect the smoothness of rolling storehouse surface.