基于CAN总线的智能变频器的设计与实现  

Development of Intelligent Frequency Converter Based on CAN Bus

作　　者：马忠矿[1] 刘欣 

机构地区：[1]淮南矿业(集团)有限责任公司潘北矿 [2]兖州煤业技术中心

出　　处：《煤矿现代化》2005年第2期53-54,共2页Coal Mine Modernization

摘　　要：设计并实现了一个带CAN总线接口的智能变频器,该变频器采用双单片机控制结构,双机之间数据并行通讯由双口RAM来完成。采用新型的CAN总线协议芯片SJA1000和AT89C51单片机共同构成CAN总线接口,可方便地与采用CAN总线技术的监控网络相连接。使用AT89C51单片机和HEF4752正弦PWM信号专用芯片作为变频部分的控制核心,给出了主要部分电路原理图和软件流程图。A frequency converter with CAN bus interface is designed and accomplished. The control structure composed by double single chip microcomputer is adopted. The parallel communication can be fulfilled with the dual-port-RAM. The novel communication interface chip SJA1000 and AT89C51 single chip microcomputer are applied to construct CAN bus interface, so the device can easily join the monitoring network of CAN field bus with necessary interfaces. The control core of frequency converter composed of the single chip microcomputer AT89C51 and sine PWM chip HEF4752, the main circuits and flow charts are given also.

关 键 词：变频器 设计与实现 AT89C51单片机 智能 CAN总线接口 SJA1000 CAN总线技术 HEF4752 双口RAM PWM信号 软件流程图 电路原理图 控制结构 双单片机 并行通讯 总线协议 监控网络 专用芯片 数据 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术] TN773[自动化与计算机技术—计算机科学与技术]