激光外差干涉仪相位计的设计OA北大核心CSCDCSTPCD
Design of phase comparator in a laser heterodyne interferometer
外差信号的比相处理是决定外差干涉仪精度、分辨率等性能的重要因素。为了解决比相计的分辨率和检测速度之间的矛盾，采用比相方法进行了测量原理、应用特点及局限性的理论分析，给出了相应的解决方案。结果表明，基于现场可编程门阵列的整周期采样可以提高自相关方法的测量精度，混频过零检测方法可以提高测量速度。
Phase comparison of the heterodyne signal determines the performance of the heterodyne interferometer to some extent,such as precision and resolution.To resolve the conflict between the resolution and the velocity,methods used presently to design the phase comparator were introduced and analyzed.Key design points to achieve high measureable velocity with fine resolution were discussed.Solutions to the problems were also proposed.The full period samplin…查看全部>>
乐燕芬;李霄夏;句爱松
上海理工大学 光电信息与计算机工程学院，上海 200093上海理工大学 光电信息与计算机工程学院，上海 200093上海理工大学 光电信息与计算机工程学院，上海 200093
机械制造
测量与计量外差干涉比相计相位测量
measurement and metrologyheterodyne interferometryphase comparatorphase measurement
《激光技术》 2014 (1)
高精密小滚转角干涉测量方法的研究
119-123,5
国家自然科学基金资助项目（51075280）；上海市大学生创新创业训练计划资助项目（201210252025）
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