基于单片机死区时间调制的PWM控制方法研究  

Research on PWM Control Method based on Dead-Time Regulation of Single-Chip-Computer

作　　者：张加胜[1] 平朝春[1] 

机构地区：[1]中国石油大学,山东东营257061

出　　处：《电力电子技术》2008年第2期84-86,共3页Power Electronics

基　　金：国家自然科学基金项目(59677020);山东省科技攻关计划项目(2006GG2304001)~~

摘　　要：通过分析研究87C196MC单片机波形发生器产生PWM脉冲及死区延时的工作机理,提出一种基于单片机死区时间调制实现DC/DC变换器PWM控制的新方法,给出了其编程设计思路。该方法具有占空比调整范围宽,分辨率高,程序设计简便,节省运行时间等特点。通过阴极防腐保护恒电位仪样机的实验结果证明了该方法的正确性和可行性。Based on the analysis and researching on the working mechanism of producing PWM outputs and dead-time by 87C 196MC single-chip-computer＇s waveform generator, a novel PWM method based on dead-time regulation is presented to control the half-bridge DC/DC converter.The programming principle and theoretical analysis is expatiatod.This method with high resolution and large duty-cycle regulating range is easy to program and occupy little working time.The correctness and feasibility of this method was testified by experiments on prototype of constant potential instrument for cathode anticorrosion protection.

关 键 词：变换器 脉宽调制 单片微型机 程序设计 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN787[自动化与计算机技术—控制科学与工程]