基于CPLD的伺服系统正交脉冲的分数分频  

Fractional frequency division of orthogonal pulses based on CPLD in servo system

作　　者：夏奇[1] 

机构地区：[1]同济大学电信学院,上海200092

出　　处：《电子设计工程》2014年第24期45-47,51,共4页Electronic Design Engineering

摘　　要：在交流伺服系统中,对电机编码器反馈的正交脉冲信号进行分频,并发送至上位机对构成全闭环系统非常必要。为了能够实现对编码器正交脉冲信号的分数分频,并保证分频得到的脉冲方向正确,数量符合要求,仍以正交形式反馈给上位机,本文研究了伺服系统中分数分频的基本原理及分频过程,采用Altera公司的QUARTUS II软件和CPLD产品EPM1270进行设计,通过软件仿真和实验测试,证明分频器在伺服系统中应用的可行性,有较强的工程应用价值。In AC servo systems, it is necessary to divide frequency of encoder pulse and feedback the result to the host compute for constituting the entire closed-loop system. When dividing frequency of encoder pulse,you shoude make sure that the pulses which the PC reserved are orthogonal pulses with correct directivity and number. The basic principle and procedure for fractional frequency division are described in detail.The frequency divider implemented with EPM1270 is designed and simulated with QUARTUS II. Simulation and experiment results verify the validity and engineering value of the technique in servo system.

关 键 词：伺服系统 正交脉冲 分数分频 CPLD 

分 类 号：TN786[电子电信—电路与系统]