Phasemeter of Online Heterodyne Interferometer Instrument for Measuring Surface Roughness with Accuracy of 2.6 ° 测量精度达2.6°的光外差干涉仪用动态相位计
A sinewave differential-phase generator using the digital technique has been developed for the calibration of phasemeter at low-frequencies. 为了校准低频相位计,采用数字法设计了一种正弦波差值相位发生器。
In this paper, a new method for solving the erratic area in the phasemeter, it is based on 401-Model Automatic Polariscop system. 本文以401型自动光弹仪的测试系统为例,对相位比较器中存在的盲区问题,提出并实现了一种新的自动处理方法。
Based on phase and integer periodic phase measurement, the implementation of a phasemeter with high dynamic accuracy is described. 依据相位测量和整数周期计数相结合的原理,不仅提高了测量精度,而且将测量范围得以扩大;利用锁相环频率跟踪的特点,实现动态测量。
Influence of frequency and wave distortion on the verification of phasemeter 频率和波形失真度变化在相位表检定中的影响
To develop a practical, economical and precision heterodyne interferometer instrument for measuring surface roughness online, phasemeter with high dynamic accuracy is the key technique. 结合用于磨床加工的光外差表面粗糙度在线干涉测量仪,文中介绍了高精度动态相位计的设计与实现。
The phasemeter detects the phase difference by calculating the time between the zero-crossing of the two signals. 该相位计通过测量两路信号过零点的时间差来计算相位差。