基于CPLD的光电码盘正交脉冲任意小数分频研究  

Arbitrary Decimal Frequency Division of Optical Encoder Quadrate Pulses Based On CPLD

作　　者：杨明[1] 刘可述[1] 牛里[1] 徐殿国[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001

出　　处：《微电机》2013年第1期13-16,共4页Micromotors

基　　金：国家自然科学基金(51007012);哈尔滨工业大学优秀青年教师培养计划资助(HITQNJS.2009.026)

摘　　要：在伺服系统位置控制中,必须接收外部位置脉冲指令,如构成全闭环系统还需将电机位置信号反馈至上位机,因此伺服控制器需要具备接受位置脉冲指令和脉冲分频输出的能力。本文研究一种基于CPLD的正交脉冲小数分频方法,不仅实现了码盘脉冲的任意小数分频,而且克服了传统的双模前置小数分频及其改进方法所造成的分频缺陷。同时实现了在三种脉冲给定模式下对位置脉冲计数及其方向鉴别。仿真和实验结果验证了所研究方案的可行性。In the position control of the servo system, it is necessary to receive external position pulse and feedback the optical encoder signal to the host computer if constitute the entire closed-loop system. There- fore, servo controller need to have the ability to accept position pulses and pulse frequency. The paper intro- duced a novel method of frequency division of optical eneoder quadrate pulses based on CPLD, it do not only achieve arbitrary decimal frequency division of optical encoder quadrate pulses, but also overcome defects caused by traditional dual-mode decimal frequency division and improved method. At the same time, the pa- per realized the position pulse count and direction identification in three kinds of pulse given mode.

关 键 词：CPLD 正交脉冲 小数分频 交流伺服 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]