摘要
介绍了新研制的四点法误差分离技术（ＥＳＴ），用来分离工件的形状误差和工作台的误差运动：三个传感器Ａ，Ｂ和Ｃ作ｌ１＝ｌ２＝ｌ的等间距布置，第四个传感器Ｄ与Ｃ的间距为ｌ±ＴＳ，而ＴＳ为采样间隔。只要预置合适的初值并经适当的计算路线，便可重构出工件形状误差和工作台的运动误差。本方法区别于频域三点法的特点是毋需进行ＦＦＴ运算，而区别于时域三点法，则是采样间隔又不受传感器间距的制约。
Introduces a new developed sequential four-point method of error separation techniques(EST) for form error and error motion: Sensor A, B and C are arranged with the same distance l 1=l 2=l, the distance between the fourth sensor D and the sensor C is l±T S (where T S is sampling interval). Thus, the form error of the workpiece and the error motion of the work table can be recurred according to right course and inital values predetermined. So this method has the characteristic to omit FFT calculation and random samplings, not like the frequency domain and sequential (time domain) three point method respectively.
出处
《宇航计测技术》
CSCD
1998年第4期1-6,共6页
Journal of Astronautic Metrology and Measurement
基金
国家自然科学基金
