题目：单闭环不可逆直流调速系统设计
1 技术指标
电动机参数：PN=3KW, nN=1500rpm, （1）绘制原系统的动态结构图； （2）调节器设计；
UN=220V,IN=17.5A,Ra=1.25 。主回路总电阻R=2.5，电磁时间常数Tl=0.017s，机电时间常数Tm=0.075s。三相桥式整流电路，Ks=40。测速反馈系数 =0.07。调速指标：D=30，S=10%。
2 设计要求
（1）闭环系统稳定
（2）在给定和扰动信号作用下，稳态误差为零。
3 设计任务
（3）绘制校正后系统的动态结构图； （4）撰写、打印设计说明书。
4 设计说明书
设计说明书严格按**大学毕业设计格式书写,全部打印.另外,设计说明书应包括以下内容: (1) 中文摘要 (2)
英文摘要
目 录
第一章 中文摘要 ································································································ - 0 - 第二章 英文摘要 ············································································ 错误!未定义书签。 第三章 课程设计的目的和意义 ·············································································· - 0 -
1．电力拖动简介 ··························································································· - 0 - 2.课程设计的目的和意义 ·················································································· - 1 - 第四章 课程设计内容 ·························································································· - 1 - 第五章 方案确定 ································································································ - 2 -
5.1 方案比较的论证 ······················································································ - 2 -
总体方案的论证比较 ·············································································· - 2 - 主电路方案的论证比较 ··········································································· - 3 - 控制电路方案的论证比较 ········································································ - 5 -
第六章 主电路设计 ····························································································· - 6 -
6.1 主电路工作设备选择 ················································································ - 6 - 第七章 控制电路设计 ·························································································· - 7 - 第八章 结论 ·····································································································- 10 - 第九章 参考文献 ·······························································································- 10 -
第一章 中文摘要
摘要：为了提高直流调速系统的动态、静态性能，通常采用闭环控制系统（主要包括单闭环、双闭环）。而在对调速指标要求不高的场合，采用单闭环即可。闭环系统较之开环系统能自动侦测把输出信号的一部分拉回到输入端，与输入信号相比较，其差值作为实际的输入信号；能自动调节输入量，能提高系统稳定性。在对调速系统性能有较高要求的领域常利用直流电动机，但直流电动机开环系统稳定性不能够满足要求，可利用转速单闭环提高稳态精度，而采用比例调节器的负反馈调速系统仍是有静差的，为了消除系统静差，可采用积分调节器代替比例调节器。
课程设计是我们在校期间的一次综合训练，它将从思方法、理论知识以及动手能力方面给予 我们严格的要求。使我们综合能力有一个整体的提高。它不但使我们巩固了本专业所学的知识，还使我们了解、熟悉了国家能源开发策略和有关的技术规程、规范以及各种设备的图形、符号等。它将为我们以后的学习、工作打下良好的基础。
本次设计主要介绍了单闭环不可逆直流调速系统的方案比较及其确定，主电路设计控制电路等。设计的内容符合国家有关经济技术政策，包括可靠性、经济性等方面。
该设计为单闭环不可逆直流调速系统电动机参数：PN=3KW, nN=1500rpm, UN=220V, IN=17.5A, Ra=1.25Ω。主回路总电阻R=2.5Ω，电磁时间常数Tl=0.017s, 机电时间常数Tm=0.075s。 三相桥式整流电路，Ks=40。测速反馈系数 =0.07。调速指标：D=30，S=10%。
本次设计中进行了计算，主要设备调试，关于主电路设计和控制电路设计是基础部分，对晶闸管和电机的调试是非常重要的部分。
计算书部分通过数据的形式对设计的要求和需要的参考价值等以直观的描述。 关键词：稳态性能 ；稳定性；开环；闭环负反馈；静差
第三章 课程设计的目的和意义 1．电力拖动简介
电力拖动是利用电动机拖动生产机械的工作机构使之运转的一种方法。由于各种生产机械的工作性质和加工工艺不同，对电动机的控制要求也不同。要使电动机按照生产机械的要求正常、安全、高效、节能地运转，必须配备由一定的电器组成的控制线路。电力拖动控制线路课程特点
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转速单闭环直流调速系统设计
