In this study, a high-resolution three-degrees-of-freedom (3-DOF) motion error measuring system based on interference is described. It can simultaneously measure the linear displacement and two angular errors of a single-axis linear moving platform. The displacement is measured using a polarization interference technique and the two angular errors are also measured based on the geometry optical theorem. The verification results show that the resolution is about 20nm. The 3-DOF measurement system detected displacements relative to a measurement mirror move with an accuracy of about ±8μm for a measuring range of ± 50mm, and detected the angular errors with a related accuracy of about ± 2 arc sec for a measuring range of ± 100 arc sec.
|Number of pages||8|
|Journal||Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture|
|Publication status||Published - 2009 Jan 1|
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Industrial and Manufacturing Engineering