关键词: 自由曲面；伺服随动；自适应；跟踪测量

Abstract:

An adaptive tracing measurement method for free-form surface was designed with laser displacement sensor.This method can be used to measure automatically wide-range free-form surface,and it was based on closed-loop motion control, in which the system was composed of grating displacement sensor, precision movable liner mechanism and servo machine designed to adjust position of probe automatically.In order to trace up-and-down change of the measured surface, laser displacement sensor ensured working in higher liner range. Experiments show that the method realizes high precision measurement for wide-range free-form surface by integrating a laser sensor which has high linearity during small measuring range,a grating displacement sensor with servo machine.

Key words: free-form surface;servo-suite;adaptive;tracing measurement