基于VB语言的零位光栅设计与反演  

Design and inversion of zero position grating based on VB

作　　者：陈赟[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所

出　　处：《微计算机信息》2010年第16期12-14,共3页Control & Automation

基　　金：中国科学院"优秀博士学位论文;院长奖获得者科研启动专项资金"资助项目;基金申请人:陈赟;基金名称:基于PC树脂基片的计量光栅盘制作技术研究;基金颁发部门:(076131G070)

摘　　要：在对零位脉冲产生原理进行研究的基础上,建立其数学模型,并结合实际应用中的一些客观要求,采用阀值法通过VB语言进行可视化编程与模拟,计算出最佳零位光栅刻线序列,这对设计零位光栅特别是刻线数较多的零位光栅提供了理论依据和实现途径。同时,为了给出测绘出的零位光栅序列的光通量曲线和对其进行部分截取或改变后的光通量比是否变化,又进行了反演计算,并给出了改变后的光通量变化曲线,这对测绘零位光栅带来了便利。该种方法在保证零位光栅最大光通量和对比度高的基础上,和传统穷举法相比具有运算量小、编程复杂程度低等优点。Based on theory of generating index pulse, a mathematics model is established. Combining with some objective requiremerits in the practical applications, the optimal zero position reticle series is obtained and its luminous flux ratio curve is simulated by using VB language to program with threshold method, which offers a principle and a new realizing approach to design zero posi- tion grating, especially more lines. At the same time, we provide the inversion program in order to give the luminous flux curve of measuring zero position grating or when it is intercepted or changed, which brings the advantage in measuring zero position grating. The method of generating or measuring zero position grating has many advantages such as reducing operation quantity, lessening degree of programming complexity comparing with enumerating method, and the method also ensures that the zero position grating has the properties of large luminous flux and high contrast.

关 键 词：增量式光电轴角编码器 零位光栅 刻线序列 反演 最大光通量 对比度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]