NSF Young Investigator: Ultra-High Precision Engineering Systems; Control, Metrology, Data Reduction and Quality Assurance

这项研究需要开发，建设和 测试先进的高速计量系统。 主要 本项目涉及的领域有：探针/表面接触 动力学，结构振动，探针轨迹控制，大型 规模数据的减少，并确定产品质量的使用 反馈到生产系统。 接触动力学将是 通过重新设计探头的机械配置进行改进， 使用数字和模拟滤波器。 探针轨迹 控制将通过高速数据采集实现， 处理系统与先进控制理论相结合。 扫描过程中产生的结构振动将通过以下方式解决： 使用最佳规划的轨迹，使激励最小化， 采用典型的柔性结构控制策略， 例如前馈。 将使用先进的统计技术 减少扫描产生的大量数据， 过程 测量结果将用于确定 零件的几何偏差和零件的质量水平 和/或批量生产的部件。 这将使用户能够 确定机床轨迹的必要修改 以产生所需的几何形状。 研究结果还将用于 分析和改进生产系统能力。

This research entails the development, construction and testing of an advanced high speed metrology system. The major areas to be addressed by this project are: probe/surface contact dynamics, structural vibration, probe trajectory control, large scale data reduction, and determination of product quality for use in feedback to production systems. Contact dynamics will be improved by redesigning the probe's mechanical configuration, and the use of both digital and analog filters. Probe trajectory control will be achieved via high speed data acquisition and processing systems in conjunction with advanced control theory. Structural vibrations generated during a scan will be addressed by using optimally planned trajectories that minimize excitation and by employing typical control strategies for flexible structures such as feed-forward. Advanced statistical techniques will be used to reduced the large amounts of data generated by the scanning process. The results of the measurements will be used to determine both geometric deviation of the part and the quality level of the part and/or batch of parts being produced. This will enable users to determine the necessary modifications to machine tool trajectories to generate desired geometries. The results will also be used to analyze and improve production system capabilities.