Firstly , the current testing localization in the detection of electric bow is analyzed and the new system ' s whole construction developed in this thesis is introduced ; in the 2rd chapter , the embedded 110v dc power supply is analyzed and constructed , and with experiments , some dissonant results such as the fluctuation of output pwm ( pulse width modulation ) pulses , the power noise added to output voltage , and the drop of output voltage have been analyzed and the problems have been broken down one by one ; in chapter 3 , stepping motor ' s drive has been systematically dissertated , and combing stepping motor ' s subdivided drive technology , the author develops an intelligent mini - step driving circuit using a main - sub microprocessor structure , which is validated in the hybrid stepper based system ; in the 4th chapter , liquid crystal driving and displaying technology is specified in detail , with one sort of lcd modules ( tlm12864h ) , the author develops an feasible circuit for the new testing system , designs a menu mode based program struc ture and brings here some programming codes using franklin c51 programming language ; in chapter 5 , the above built system is used in the electric bow ' s practical detection , and the differentiating rate of this system is analyzed 論文首先分析了目前機(jī)車受電弓檢修方式存在的局限并概述了本論文研制的受電弓測試系統(tǒng)的體系架構(gòu);第二章對系統(tǒng)內(nèi)置110v直流控制電源進(jìn)行了分析和設(shè)計(jì),結(jié)合試驗(yàn)對輸出pwm振蕩、輸出電源噪聲大、輸出電壓下跌等現(xiàn)象進(jìn)行了分析并提出解決措施;第三章論述了步進(jìn)電機(jī)的驅(qū)動(dòng),結(jié)合步進(jìn)電機(jī)微步驅(qū)動(dòng)技術(shù)研制了基于上下位單片機(jī)組的混合式步進(jìn)電機(jī)智能驅(qū)動(dòng)電路,并在試驗(yàn)中得以驗(yàn)證;第四章詳述了液晶驅(qū)動(dòng)及顯示技術(shù),利用一款液晶顯示模塊tlm12864h研制出本系統(tǒng)用液晶顯示電路,設(shè)計(jì)了菜單式的程序結(jié)構(gòu)并以franklinc51編程方式給出部分子程序代碼;第五章則將以上構(gòu)建的整個(gè)系統(tǒng)應(yīng)用在機(jī)車受電弓的實(shí)測中,并對測試分辨率進(jìn)行了分析。