基于Intel 8254的运动平台数/模转换电路设计  

Design of Motion Platform Digital-to-analog Converting Circuit Based on Intel 8254

作　　者：卢颖[1] 王勇亮[1] 侯士豪[1] 孙方义[1] 

机构地区：[1]空军航空大学军事仿真技术研究所,吉林长春130022

出　　处：《现代电子技术》2011年第13期142-144,154,共4页Modern Electronics Technique

基　　金：空军科研基金项目(KJZ06139)

摘　　要：提出了一种新型的运动平台数/模转换(D/A)电路。利用可编程定时/计数器8254具有可编程单次脉冲、对主频进行分频等特点,设计了一种数/模转换电路。实际应用表明,这种数/模转换电路简单实用,工作稳定,且成本低、抗干扰能力较强、实时性好,已经成功地应用于某型飞行模拟器三自由度运动平台控制系统中。该电路还可推广应用于飞行模拟器的仪表控制系统、操纵负荷仿真系统的数/模转换电路中。A new type of digital-to-analog（D/A） converting circuit of motion platform is proposed this paper. The digitalto-analog convertor （DAC） was designed by means of the programmable timer/counter 8254. It has characteristics of programmable single pulse and divided frequency for dominant frequency. The application shows that this kind circuit is simple, practical, stable and low cost, has stronger anti-interference ability and better real-time performance; and has been successfully applied to the control system of a flight simulator 3-DOF motion platform. This circuit can also be applied to the instrumentation control system of flight simulator and DAC of control loading simulation system.

关 键 词：运动平台 可编程定时/计数器8254 数/模转换电路 可编程单次脉冲 

分 类 号：TN79-34[电子电信—电路与系统]