单片机PWM死区时间控制的非常态应用方法  

Nonregular application method of the single-chip computer PWM dead-time regulation

作　　者：张加胜[1] 平朝春[1] 

机构地区：[1]中国石油大学电气工程系,山东东营257061

出　　处：《电气传动自动化》2008年第6期54-56,60,共4页Electric Drive Automation

基　　金：国家自然科学基金项目(59677020);山东省科技改关计划项目(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和理论分析,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。Through analysis and research on the working mechanism of producing PWM outputs pulse and deadtime by the waveform generator of 87C 196MC single-chip computer, a novel PWM method by regulating the deadtime is presented to control the bridge DC/DC converter. Both programming principle and theoretical analysisare expatiated. This method with high resolution and large duty-cycle regulating range is easy to program and occupy a little working time. The correctness and feasibility of the method are confirmed by experimental results on prototype of constant potential instrument for cathode anticorrosion protection.

关 键 词：87C196MC 死区时间 占空比 DC/DC变换器 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]