PAGE\*MERGEFORMAT29摘要步进电机是一种由脉冲控制转速的执行机构。其驱动简单，控制精确度高，是日常使用的定位和驱动的工具。控制好步进电机，可以提高定位的精确性，对日常生产有较大的研究意义和应用前景。本文采用51单片机作为主控芯片，L297为电机驱动芯片，L298N为步进电机控制芯片，设计了一个步进电机控制系统。首先介绍了步进电机的转动和控制原理，然后对单片机和驱动芯片做介绍。然后编写控制系统软件。最后采用Proteus进行仿真，并对结果进行分析。关键词：步进电机，单片机，控制系统AbstractSteppermotoriscontrolledbypulseactuators.Itiseasytodriveandhavehighcontrolaccuracy,andisatoolfordailyuseofpositioninganddriver.Makinggoodcontrolofsteppingmotor,canimprovetheaccuracyofpositioning,sothestudyofdailyproductionhasgreatsignificanceandapplicationprospect.The51singlechipmicrocomputerisusedasmaincontrolchip,L297andL298Nareusedforsteppermotorcontrolchip,asteppingmotorcontrolsystemisdesigned.Firstlyintroducestherotationofthesteppermotorandcontrolprinciple,andthenintroducesMCUanddriverchip.Thenwritecontrolsystemsoftware.FinallyusesProteussimulation,andanalyzetheresults.Keywords:stepmotor,single-chipmicrocomputer,controlsystem目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc446874018"摘要PAGEREF_Toc446874018\h1HYPERLINK\l"_Toc446874019"AbstractPAGEREF_Toc446874019\h2HYPERLINK\l"_Toc446874020"目录PAGEREF_Toc446874020\h3HYPERLINK\l"_Toc446874021"第一章绪论PAGEREF_Toc446874021\h5HYPERLINK\l"_Toc446874022"1.1步进电机简介PAGEREF_Toc446874022\h5HYPERLINK\l"_Toc446874023"1.2步进电机驱动系统PAGEREF_Toc446874023\h6HYPERLINK\l"_Toc446874024"1.3步进电机研究的国内外状况PAGEREF_Toc446874024\h6HYPERLINK\l"_Toc446874025"第二章51单片机原理PAGEREF_Toc446874025\h8HYPERLINK\l"_Toc446874026"2.151单片机发展PAGEREF_Toc446874026\h8HYPERLINK\l"_Toc446874027"2.251单片机介绍PAGEREF_Toc446874027\h8HYPERLINK\l"_Toc446874028"2.3单片机最小系统PAGEREF_Toc446874028\h9HYPERLINK\l"_Toc446874029"第三章步进电机调速系统电路设计PAGEREF_Toc446874029\h11HYPERLINK\l"_Toc446874030"3.1L297步进电机控制器PAGEREF_Toc446874030\h11HYPERLINK\l"_Toc446874031"3.2L298N电机驱动芯片PAGEREF_Toc446874031\h13HYPERLINK\l"_Toc446874032"3.3显示电路设计PAGEREF_Toc446874032\h14HYPERLINK\l"_Toc446874033"3.3.1LM016L液晶模块PAGEREF_Toc44687