CPLD在中压变频控制器中的应用与研究  

The application and research of the CPLD in medium valtage variable-frequency controller

作　　者：张坤鳌[1] 刘敏层[2] 

机构地区：[1]西安科技大学计算机系 [2]西安建筑科技大学信控学院

出　　处：《微计算机信息》2007年第29期167-168,共2页Control & Automation

基　　金：陕西省教育厅产业化培育项目(26-02JC26)

摘　　要：SPWM(正弦脉宽调制)多电平叠加变频技术计算复杂,输出脉冲路数多,系统实时性要求高。采用单片DSP作为其控制器核心器件,不能满足控制器实时性要求;多片DSP协同工作,需要交换总线控制权而消耗核心DSP时间资源,并且也不能满足脉冲输出端口数量。DSP与CPLD两者协调工作,很好地解决了这些问题,另外该种技术方案开发周期短,生产成本低。本文正是以此为背景展开研究,详细论述CPLD功能总体设计、硬件选型设计与脉冲形成CPLD软件开发流程,并且给出了系统运行波形图。The computation of the technology of the SPWM multi-power level adding is very complex ,but also the number of branch of distribution of pulse are many ,at the same time ,its system controlling faces with a real-time problem. The single DSP chip as the controlling core is very difficult to meet with the controlling real-time characteristic requirements for use , the collaborative work of several DSP chips needs exchanging the control power of system bus ,so the time resources of core DSP, at mean time , the number of branch of distribution of pulse is too few to use .However DSP combined with the CPLD consistently supplies a good method to resolve these problems. On the side, the period of development is less and the cost of development is lower . This paper takes this as the background for studying , it describes in detail the process of design of CPLD function general design and hardware model selection. And the software development cycle and the waveform graph of system operation are given.

关 键 词：多电平 复杂可编程逻辑器件 正弦波脉宽调制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]