摘要
在测量过程中,圆柱度是经常需要测量及评价的形状误差参数,测量点数的选取会对其测量精度和测量成本造成一定的影响.综合考虑了径向谐波误差、轴向误差、特征尺寸、特征形状位置等影响测量结果的因素,提出了一种测量时确定采样点数的公式,并应用Hammersley序列、Halton序列、叶序理论来确定其坐标分布情况.在测量机中进行了实际测量,结果表明,结合3种成熟的布点策略,利用所提出的公式得到的采样精度均高于测量机自身软件的采样精度.
Due that the cylindricity is frequently used as a measurement and evaluation parameter for shape error,the number selection of measurement points impacts the measurement precision and cost.By comprehensively considering such impact factors as radial harmonic error,axial error,feature size,feature shape location,a formula is proposed to determine sampling points.The coordinate distribution is obtained using the Hammersley sequence,Halton sequence and phyllotaxis theories.With practical measurement on measuring machine,it is indicated that the sampling precision with integration of three stationing strategies is higher than the attached software of measuring machine.
出处
《中国工程机械学报》
北大核心
2015年第6期566-570,共5页
Chinese Journal of Construction Machinery
关键词
圆柱度
采样点数公式
分布策略
采样精度
cylindricity
sampling point number formula
distribution strategy
sampling precision
