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ID:14182377
大小:165.00 KB
页数:10页
时间:2018-07-26
《pwm控制直流调速系统毕业设计(有全套图纸)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、完整设计联系QQ1074765680PWM控制直流调速系统设计摘要在电气时代的今天,电动机在工农业生产、人们日常生活中起着十分重要的作用。直流电机是最常见的一种电机,在各领域中得到广泛应用。研究直流电机的控制和测量方法,对提高控制精度和响应速度、节约能源等都具有重要意义。电机调速问题一直是自动化领域比较重要的问题之一。不同领域对于电机的调速性能有着不同的要求,因此,不同的调速方法有着不同的应用场合。本文基于PWM的双闭环直流调速系统进行了研究,并设计出应用于直流电动机的双闭环直流调速系统。首先描述了变频器的发展历程,提出了PWM调速方法的优
2、势,指出了未来PWM调速方法的发展前景,点出了研究PWM调速方法的意义。应用于直流电机的调速方式很多,其中以PWM变频调速方式应用最为广泛,而PWM变频器中,H型PWM变频器性能尤为突出,作为本次设计的基础理论,本文将对PWM的理论进行详细论述。在此基础上,本文将做出SG3525单片机控制的H型PWM变频调速系统的整体设计,然后对各个部分分别进行论证,力图在每个组成单元上都达到最好的系统性能。关键词:直流调速;双闭环;PWM;SG3525;直流电机完整设计联系QQ1074765680完整设计联系QQ1074765680DC-drivespe
3、edsystemwithPWMABSTRACTInelectricaltime'stoday,theelectricmotorintheindustryandagricultureproduction,thepeopledailylifeisplayingtheveryvitalrole.ThedirectcurrentmachineisthemostcKeyword:DCspeedregulation;Double-loop;PWM;SG3525;DCmoter;II目录摘要································
4、·····································ⅠAbstract··································································Ⅱ前言·····································································1第1章直流调速系统的方案设计············································21.1设计技术指标要求··················
5、·································21.2现行方案的讨论与比较···············································21.3选择PWM控制调速系统的理由·······································41.4选择IGBT的H桥型主电路的理由·····································41.5采用转速、电流双闭环的理由·······································5第2章PWM控制
6、直流调速系统主电路设计··································62.1主电路结构设计·····················································62.1.1PWM变换器介绍···························································62.1.2泵升电路·································································132.2参数设计·······
7、····························································132.2.1IGBT的参数······························································132.2.2缓冲电路参数····························································142.2.3泵升电路参数···················································
8、·········14第3章PWM控制直流调速系统控制电路设计·································153.1PWM信号发生器············
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