Abstract: To match the requirement of multiscale feature coexistence and multisource measurement data fusion,based on combined measurement,a flexible inspection method for large-scale product was put forward for onsite automated inspection.According to this method,a flexible measurement unit framework was presented to make the unit realize wide-area movement,local precise execution and end high-accuracy inspection.The optimization model of flexible measurement unit was formulated to analyze the unit measurement space and its measurement uncertainties.Based on the analysis,a large-scale product flexible inspection method was researched,in which a measurement station planning algorithm based on K-means clustering and an adaptive control strategy based on measurement data were proposed.An experimental flexible inspection system was self-designed and developed.The assembly stepped difference and gap inspection was taken as an example,whose inspection results demonstrated the feasibility and validity of this technology.

Key words: combined measurement, large-scale product, flexible measurement unit, flexible inspection, assembly stepped difference and gap

摘要： 针对大型复杂产品检测具有的多尺度特征并存、多源测量数据融合特点,提出一种基于组合测量的大尺度产品柔性检测技术,构建具备广域移动、局域精准执行和末端高精度检测特性的柔性测量单元,以实现柔性化和自动化在线检测。进行柔性测量单元测量精度优化问题建模,并分析其在固定站位下的测量空间范围及测量精度分布。提出基于柔性测量单元的大尺度产品柔性检测方法,通过K-均值聚类分析实现测量站位规划,并给出基于测量数据反馈的自适应控制策略。设计开发了面向装配阶差与间隙检测的柔性检测系统,通过标准试块检测试验及其精度分析,验证了所提技术方法的可行性与有效性。

关键词: 组合测量, 大尺度产品, 柔性测量单元, 柔性检测, 装配阶差与间隙