摘要
自由曲面的高速、高精度、扫描测量是曲面在线检测需要解决的首要问题。为此,提出一种基于寻位信息的测量路径规划方法,使得在满足精度要求的前提下,实现测点优化分布;在此基础上,将自适应控制理论应用在测头自动跟踪控制中,以便测头能够跟随曲面的变化自动调整其位置,完成自由曲面的高速、高精度、扫描测量,理论分析与仿真实验结果表明,所提出的测量方法可行,为曲面的精密测量开辟了一条新的有效途径。
The solve in rapid, precise and scanning measurement of freeform surface is the primary problem to its online inspection. Thus, a measurement planning method based on acquired real state information is proposed and simulated so as to optimize distribution of measurement points within a satisfactory toler- ance band around the CAD model. A new idea using the adaptive control theory is presented for the au- tomatic tracking controlling of measuring probe. Thus, rapid, precise and scanning measuring for large- scale surface can be accomplished. Theoretical analysis and experimental results show that the proposed method is effective, and a new approach to precise measurement of free-form surface.
出处
《制造技术与机床》
CSCD
北大核心
2012年第6期118-122,共5页
Manufacturing Technology & Machine Tool
基金
国家科技重大专项课题(2009ZXF04001-022)
关键词
自由曲面
寻位信息
路径规划
优化分布
Freeform Surfaces
Real State Information
Measurement Planning
Optimize Distribution