数控电源的模块化设计.docVIP

数控电源的模块化设计 Modular Design of Digital Power Supply 谢健华，任毅，李文峰，张欣龙，袁臣虎，天津工业大学信息学院（300160，天津） Xie Jianhua, Ren Yi, Li Wenfeng, Zhang Xinlong, Yuan Chenhu School of Information and Communication Engineering, Tianjin Polytechnic University(300160, Tianjing) 摘要：本文采用凌阳16位单片机SPCE061A完成了数控电源的模块化设计，实现了电源输出电压的设定、输出电压步进调整、输出电压和输出电流的显示以及输入欠压保护等功能。本文设计的数控电源由模拟部分和数控部分组成。模拟部分是由KA3525芯片为核心的半桥功率变换器、整流滤波电路、稳压电路、滤波电路等组成。数控部分采用凌阳16位单片机SPCE061A，实现了输入对半桥单级逆变电路的PWM波的产生。采用4×4的矩阵键盘实现输出电压设定和步进调整，采用A/D和D/A转换技术对输出电压进行设定和采样，采用RT12864液晶显示器对电源输出电压、输出电流和相关控制以及状态信息进行显示。 关键词：数控电源 模块化 凌阳单片机 RT12864液晶显示 Abstract: The paper adopts the Sunplus 16-bit single chip processor SPCE061A to complete the modular design of digital power supply, and to realize funcions such as the setting of out-put voltage, the output voltage step adjustment, the display of output voltage and output current and the proctecion of input under-voltage, etc.. The digital power supply designed includes analog part and digital part.The analog part is composed of half-bridge power converter with the chip KA3525 as its core, rectifier-filter circuit, voltage-stabilizing circuit, and filter circuit, etc.. The digital part adopts the 16-bit single chip processor SPCE061A to realize the PWM wave which is from input to the half-bridge unipolar inverter circuit. The application of 4*4 matrix keyboard results in the setting of output voltage and step adjustment; the use of A/D and D/A converting technology leads to the setting and sampling of output voltage; the application of RT12864 LCD shows output voltage, output current, related control and other information. Keywords: Digital power supply, Modulization, Sunplus single chip microcomputer, RT12864, RT12864 LCD ［中图分类号］TN86 ［文献标识码］ A 文章编号：1561-0349（2010）11- 1 前言 在生活和教学实验中，用到的电源多种多样，但是，目前的电源普遍存在整体调试复杂和电源的各个功能组成部件寿命长短不一的问题，使整体的调试操作难度较大。同时，存在着由于电源系统的某个功能部件磨损老化而造成整体弃用的浪费现象。针对上述问题，本文提出了一种模块化的数控电源设计方案。此系统采用KA3525控制芯片和凌阳16位单片机SPCE061A作为控制核心，实现了基于单片机的数控电源模块化设计，将整个电源系统分为若干个独立的功能模块