一种基于CPLD的全数字键相信号处理电路  

The Whole Digital Processing Circuit Based on CPLD for Key Phase Signal

作　　者：陈虎勋[1] 田新启[1] 

机构地区：[1]东南大学火电机组振动国家工程研究中心,江苏南京210096

出　　处：《自动化仪表》2009年第9期65-66,70,共3页Process Automation Instrumentation

基　　金：国家高技术研究发展计划资助项目(编号:2007AA04Z434)

摘　　要：为了开发新型振动信号监测系统,设计了一种应用在旋转机械振动信号采集系统中的全数字键相信号同步处理电路。介绍了键相信号相位同步原理以及电路各个模块的功能,并且在MAX+plusⅡ开发平台上通过了仿真验证。该电路采用全图形化方法编程且在复杂可编程逻辑器件CPLD芯片上实现,具有可移植性好、体积小、功耗低、可靠性高、方便维护和升级等优点,增强了系统的灵活性、可靠性和稳定性。实验表明,该电路能够快速锁定相位,具有一定的实用性和使用价值。In order to develop new type of vibration signal monitoring system, the whole digital key phase signal synchronization processing circuit used in collecting system of vibration signal for rotating machine has been designed. The synchronization principle and the functions of each module are introduced. The circuit is simulated and verified on MAX ＋ plus II development platform. The circuit is programmed with graphic method and achieved on CPLD chip. It features compact, low cost, low power consumption, transplant possibility, and easy to maintain and upgrade ; so it enhances flexibility, reliability and stability of the system. The circuit is verified with rapid phase-locked capability, thus it possesses certain practicability and usefulness.

关 键 词：旋转机械 键相信号 锁相 振动 仿真 同步 

分 类 号：TP331[自动化与计算机技术—计算机系统结构]