介绍了一种采用光栅数显装置的绝对零位系统进行大直径测量的新方法。
This article introduces a new way which applies absolute zero position system of grating digital readout-instrument to measuring large diameter.
在自行设计的动态误差实验系统中，同步采集标准信号（电机脉冲数）和测量信号（光栅脉冲数），实时比对分离出动态误差。
In a self-designed dynamic error experimental system, the standard signal (motor pulses) and the measured signal (grating pulses) were collected synchronously, and isolated the dynamic error.
模拟结果表明，焦斑尺寸随色循环数和光栅色散方向上基准脉冲带宽的增加而增大。
Simulation results show that the size of the focal spot increases with the number of color cycles and the basic pulse bandwidth in the dispersing direction.
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