基于改进CORDIC算法的时栅位移传感器激励信号源设计  

Incentive Signal Source for Time Grating Displacement Sensor Based on Improved CORDIC Algorithm

作　　者：高忠华[1] 冷静[1] 彭东林[1] 郑方燕[1] 

机构地区：[1]重庆理工大学机械检测技术与装备教育部工程研究中心,重庆400054

出　　处：《仪表技术与传感器》2013年第4期10-12,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金资助项目(51127001)

摘　　要：在深入分析CORDIC基本算法原理的基础上,实现了一种改进算法,这种改进算法的迭代方向由输入角二进制表示时的各位位值直接确定,避免了CORDIC基本算法中迭代方向需由剩余角度计算结果决定的不足。利用该改进的CORDIC算法,实现了时栅位移传感器激励信号源设计。试验表明:该方案能够提高时栅位移传感器三相激励信号输出频率和相位差的精确度,有实际应用价值。With the analysis of CORDIC algorithm,an improved algorithm was realized,the iteration direction was determined by each bit value of the input angle representing with the binary system.In this way,the disadvantage of the CORDIC basic algorithm that the iteration direction decided by the compute results of residual angels can be avoided.Based on this improved algorithm,incentive signal source for time grating displacement sensor was designed and implemented.Experiment shows that frequency and phase-difference of incentive signal can be promoted in this scheme,it＇s practical and valuable.

关 键 词：CORDIC算法 时栅位移传感器 直接频率合成器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]