面向任务的CMM圆度测量不确定度建模与优化  

Modeling and optimization of task oriented uncertainty for CMM

作　　者：程杰 沙跃兵 周易明 程银宝 Cheng Jie;Sha Yuebing;Zhou Yiming;Cheng Yinbao(Naval Petty Officer Academy of PLA,Bengbu 233010,China;Zhejiang Institute of Metrology,Hangzhou 310063,China;China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国人民解放军海军士官学校,蚌埠233010 [2]浙江省计量科学研究院,杭州310063 [3]中国计量大学,杭州310018

出　　处：《电子测量技术》2024年第10期108-114,共7页Electronic Measurement Technology

基　　金：浙江省产学合作协同育人项目;浙江自然科学基金(LY22E050005)项目资助。

摘　　要：精密仪器正趋向于智能化以及功能多样化发展,评估精密仪器的测量不确定度因此也变得更加复杂。以CMM中的圆度测量为例,以面向任务的不确定度评定方法,实现快速、可靠地评估出CMM测量任务的不确定度。根据误差传播的实际情况,结合计算机模拟的蒙特卡洛方法,提出了一种误差分布多状态下的不确定度代数和合成方法。针对测量不确定度初次评定存在过量估计的问题,提出了优化评估方案。给出圆度测量任务的不确定度评定与优化实例,验证评定模型和优化方法的可行性与有效性。系统性解决CMM面向任务的不确定度评定难题,对于解决其他高精度仪器测量结果的不确定度评估、提高仪器的实际使用价值,均具有重要参考意义。Precision instruments are tending towards intelligence and diversified functions,making the evaluation of measurement uncertainty in precision instruments more complex.Taking roundness measurement in CMM as an example,a task-oriented uncertainty evaluation method is used to quickly and reliably evaluate the uncertainty of CMM measurement tasks.Based on the actual situation of error propagation and combined with the Monte Carlo method of computer simulation,a method for algebraic sum synthesis of uncertainty under multiple states of error distribution is proposed.Aiming at the problem of overestimation in the initial evaluation of measurement uncertainty,an optimized evaluation scheme is proposed.Provide an example of uncertainty evaluation and optimization for roundness measurement tasks to verify the feasibility and effectiveness of the evaluation model and optimization methods.Systematically solving the uncertainty evaluation problem of CMM task oriented has important reference significance for solving the uncertainty evaluation of other high-precision instrument measurement results and improving the practical use value of the instrument.

关 键 词：坐标测量机 精度 测量不确定度 数学模型 优化估计 

分 类 号：TN06[电子电信—物理电子学] TB92[一般工业技术—计量学]