智能振动时效控制系统PWM设计与仿真  

PWM Design and Simulation of Intelligent VSR Control System

作　　者：王安明[1] 

机构地区：[1]西安铁路职业技术学院陕西西安710014

出　　处：《西安铁路职业技术学院学报》2013年第3期18-23,共6页Journal of Xi’an Railway Vocational & Technical Institute

摘　　要：基于单片机的智能振动时效控制系统，要求能够输出频率1-400Hz，宽度1．25ms，步长0．1Hz，精度1％的脉冲。利用单片机实现PWM的基本思路是利用其定时器在高电平和低电平时分别定时，使单片机的一个通用I/O口输出频率不变或可变而宽度不变的脉冲。本文在Proteus中设计电路，在KeilCpNision4平台下用C语言设计程序并编译通过，两者结合进行了仿真，并对频率误差进行了校正。Intelligent VSR control system based on MCU requires the ability to output pulse that the frequency is 1 - 400Hz, width 1.25ms, step 0.1Hz, a precision of 1%. the basic idea to output PWM based on MCU is timing with the timer in the high level and low level respectively, so that I / 0 port of MCU can output pulse of constant or variable frequency while constant width. In this paper, the circuit was designed in Proteus and the program using C language was developed and compiled in Keil C Vision 4 platform, the combination simulation of the both was fin- ished, but the errors of frequency is corrected successfully.

关 键 词：振动时效 单片机 PWM 仿真 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]