西南大学22年9月0933 机械工程控制基础在线作业资料非答案

admin · 发表于 2023-4-4 09:10:34

答案来源：www.ybaotk.com0933 机械工程控制基础

1.[单选题] 在反馈控制系统中，【 】。

答案资料下载请参考
说明

A.系统阶次越高，系统稳定误差越大

B.系统型次越高，增益越大，系统稳定误差越小

C.系统阶次越高，增益越大，系统稳定误差越小

D.系统型次越高，增益越大，系统稳定误差越大

2.[单选题] 某系统的运动微分方程为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605454291692090860.png" title="202011151605454291692090860.png" alt="image.png"/>，该系统是（ ）。

A.线性定常系统

B.非线性时变系统

C.非线性系统

D.线性时变系统

3.[单选题] 某系统的开环传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605451217447098484.png" title="202011151605451217447098484.png" alt="image.png"/>，该系统为（ ）。

A.0型系统

B.都不是

C.Ⅰ型系统

D.Ⅱ型系统

4.[单选题] 为提高二阶欠阻尼系统相对稳定性，可（ ）。

A.减小ξ

B.加大<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605539323281099033.png" title="202011161605539323281099033.png" alt="image.png"/>

C.减小<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605539289390075561.png" title="202011161605539289390075561.png" alt="image.png"/>

D.加大ξ

5.[单选题] 开环控制系统是指系统中没有【 】。

A.反馈回路

B.积分环节

C.惯性环节

D.支路

6.[单选题] 用以稳定控制系统，提高控制性能的元件，称为系统的（ ）。

A.给定元件

B.比较元件

C.校正元件

D.反馈元件

7.[单选题] 某反馈控制系统的系统方框图如图所示，则该系统的开环传递函数为【 】。

<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535044508067945.png" title="202011161605535044508067945.png" alt="image.png"/>

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535084619090199.png" title="202011161605535084619090199.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535150500075181.png" title="202011161605535150500075181.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535103395056500.png" title="202011161605535103395056500.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535126098032664.png" title="202011161605535126098032664.png" alt="image.png"/>

8.[单选题] 某系统的传递函数为<img width="88" height="41" src="data:image/png;base64,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"/>，则影响系统时间响应快速性的因素是（ ）。

A.K

B.K和T

C.输入信号大小

D.T

9.[单选题] 某系统的传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605456515539066524.png" title="202011161605456515539066524.png" alt="image.png"/>，则影响系统时间响应快速性的因素是（ ）。

A.都不是

B.T

C.K

D.K和T

10.[单选题] 以下关于方框图说法错误的是（ ）。

A.方框图中，每条线段上描述的是系统中传递的信号

B.方框图是系统的一种模型表述

C.方框图中每个方框中描述的系统某个环节的传递函数

D.方框图的标注上，每条线段上不能用信号的时域形式进行表述

11.[单选题] 线性定常二阶系统的闭环增益加大，（ ）。

A.对系统的动态性能没有影响

B.峰值时间提前

C.超调量愈大

D.系统的快速性愈好

12.[单选题] 比例环节的对数相频特性<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605538654943094960.png" title="202011161605538654943094960.png" alt="image.png"/>为（ ）。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605538747487023399.png" title="202011161605538747487023399.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605538725636098594.png" title="202011161605538725636098594.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605538706525011682.png" title="202011161605538706525011682.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605538765364099341.png" title="202011161605538765364099341.png" alt="image.png"/>

13.[单选题] 二阶微分环节的传递函数是【 】。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605441543013016346.png" title="202011151605441543013016346.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605441523876068084.png" title="202011151605441523876068084.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605441505963076472.png" title="202011151605441505963076472.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605441485685085945.png" title="202011151605441485685085945.png" alt="image.png"/>

14.[单选题] 延时环节<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605613960450081112.png" title="202011171605613960450081112.png" alt="image.png"/>的相频特性<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605613981390077321.png" title="202011171605613981390077321.png" alt="image.png"/>（ ）。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605614092307029563.png" title="202011171605614092307029563.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605614065340006814.png" title="202011171605614065340006814.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605614037181084469.png" title="202011171605614037181084469.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605614012332024230.png" title="202011171605614012332024230.png" alt="image.png"/>

15.[单选题] 两系统传递函数分别为G1(s)=100/(s+1)、G2(s)=100/(s+10)。调节时间分别为t1和t2，则（ ）。

A.t1< t2

B.t1> t2

C.t1=t2

D.t1≤t2

16.[单选题] 系统方框图如图所示，则该系统的传递函数为（ ）。<img width="236" height="116" align="left" src="data:image/png;base64,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" hspace="12" v:shapes="_x0000_s1031"/>

A.?<img width="93" height="47" src="data:image/png;base64,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"/>

B.?<img width="93" height="47" src="data:image/png;base64,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"/>

C.?<img width="93" height="47" src="data:image/png;base64,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"/>

D.?<img width="72" height="47" src="data:image/png;base64,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"/>

17.[单选题] 比例环节的对数幅频特性是（ ）。

A.0

B.K

C.-20lgK

D.20lgK

18.[单选题] 用以稳定控制系统，提高控制性能的元件，称为系统的（ ）。

A.校正元件

B.比较元件

C.给定元件

D.反馈元件

19.[单选题] 单位阶跃响应的导数是（ ）。

A.单位斜坡响应

B.都不是

C.单位加速度响应

D.单位脉冲响应

20.[单选题] 伯德图中对数相频特性图上的<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535619987006143.png" title="202011161605535619987006143.png" alt="image.png"/>线对应于奈奎斯特图上的【 】。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535799496091407.png" title="202011161605535799496091407.png" alt="image.png"/>

B.负虚轴

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535809268028350.png" title="202011161605535809268028350.png" alt="image.png"/>

D.负实轴

21.[单选题] 按控制系统组成元件的物理性质分，可将系统分为机械控制系统、液压控制系统和【 】等。

A.人工控制系统

B.程序控制系统

C.电气控制系统

D.离散控制系统

22.[单选题] 系统的频域指标<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605616680820037328.png" title="202011171605616680820037328.png" alt="image.png"/>可表征系统的【 】。

A.准确性

B.抗干扰能力

C.稳定性

D.快速性

23.[单选题] 若<img width="31" height="23" src="data:image/png;base64,R0lGODlhHwAXAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAMAAgAaABIAhAAAAAAAAB0AHQAAHR0AMgAAMwAcSB0zWgAzWh1GbDMAADIAHTIAMjMzWzNGbjNbgEgcAEceM1ozHVozAFszM11/f0huf1l/bmxGHX9/XX9uSGaIiIBbM4iIZgECAwECAwVoICCOZGmeaKquLKoE45FK6SIawLQiaLI6Iw2qUCKUBCVbKRAgijhOERM2UjxMPFLUZVKUoCQlyVo0RTG4kreUDgosI58JPoKcxMZI2Y26cgIDX1gtKTxGKDQoDU9NK4smFIQkWSM6IyEAOw=="/>的拉氏变换为<img width="100" height="44" src="data:image/png;base64,R0lGODlhZAAsAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAIABABfACYAhQAAAAAAAAAAHR0AHR0AAAAAMx0AMh0dSAAcSB0zWgAzWh1GbDMAADIAHTIAMjMzWzNbgEgcAEceM1ozAFozHVszM1tISEhZf11/f0huf2xGHW5GRn9ZSH9/XX9uSGaIiIBbM4BuboiIZgECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwb/QIBwSCwaj8ikcjlkBALMqHRKrR41Bat2y6U2uuBw2CMum6mHs3pd1Dyz7PgaKo9W6tEFHuBQ9vdIE4BMD4NFZGVPik8IQgmGUoqNZgJFeoJMIJBsGpNFX1EGm2t6RqKjo6AAaUNwRE50TahlIItFrkIaQxCvvEITi4oKs0wTw0KlACC4QqdFDMRh0EIct0eeTb6Rwdzd3t/gikOVSANEFr/JQqoAwNzH0UjwRuwAvJhDHs7xVQSMUbCYAZgnptCaO2soqPnDhqEUhZAQyjE4heIeRGVgaROSoQpBOfjCSBgSSxm/JPWYjETSUUiEIvtODompUsq8lMRg6RGo88jKWCUvX8kcaBKAwGGauLCSNZSIwCPugn0c0pKpTE9PsYmZJhOfOSMhi/xEkuzCEJyjghpbR0TtVCaLcNFEFXBIyLpIxhYJVuTtyUd1IDYtUnWw4cNhkrLRFgQAOw=="/>，则<img width="67" height="29" src="data:image/png;base64,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"/>（ ）。

A.?<img width="16" height="41" src="data:image/png;base64,R0lGODlhEAApAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAMABAAJACIAhAAAAAAAAAAAMx0dSAAcSAAzWh0zWh1GbDMAADIAHTIAMjNbgEgcAEceM1ozAFozHUhZf11/f0huf2xGHX9ZSH9/XX9uSGaIiIBbM4BuboiIZgECAwECAwECAwECAwECAwU/ICAiQSCe5xQs6Mm0aAED72zfLHzMZSmcvdJtSCwaAcHkcck8kUwoxelnk8wMswEvQG2pdrDaLNfSijA9wikEADs="/>

B.?<img width="16" height="41" src="data:image/png;base64,R0lGODlhEAApAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAMABAAJACIAhAAAAAAAAAAAMx0dSAAcSB0zWgAzWh1GbDMAADIAHTIAMjNbgEgcAEceM1ozAFozHUhZf11/f0huf2xGHX9ZSH9/XX9uSGaIiIBbM4BuboiIZgECAwECAwECAwECAwECAwU+ICAiQSCe5ySgaMKK1iuLU7nK5nzIzsyWAYJvSCwaRcBk6chsnki5U+MUfRl4voVsIHvIJjLMKUYF3mrJawgAOw=="/>

C.?1

D.?∞

24.[单选题] 某系统的传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605612716656081811.png" title="202011171605612716656081811.png" alt="image.png"/>，则其相频特性为（ ）。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605612770025042112.png" title="202011171605612770025042112.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605612752711059009.png" title="202011171605612752711059009.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605612815771046980.png" title="202011171605612815771046980.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605612792300074576.png" title="202011171605612792300074576.png" alt="image.png"/>

25.[单选题] 系统的静态加速度误差系数Ka定义为（ ）。

A.?<img width="88" height="29" src="data:image/png;base64,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"/>

B.?<img width="88" height="29" src="data:image/png;base64,R0lGODlhWAAdAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAEAAgBVABcAhQAAAAAAAAAAHR0AAB0AHR0AMgAAMwAcSAAzWh0zWh1JSR1GbDMAADIAHTIAMjMzWzNdXTNGRjNGbjNbgEgcAFozAFozHVszM0YzRl1dM1tISF1/f0huf0RubmxGHW5GM39/XX9uSGaIiIBbM4iIZgECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwb/QIBwSCwaj8gk8aJsOp9QqEM5jRKrR6x1y31wtwxh+DusBM4IYmJrPi8A7cBbuFZahozABDD+jgIHQ39vFU8jRR4CHEOJi0KFTmlCA2REekgNUAVFko+dAJlOm5N7lQOfQ4ujYEV9QqtKoQCUfEICABQBabmoZQZKv61nrUTBQ8ZCyHxuRGMhAxB5swG3f9WKRxRFuWe/yh5DpWLiZ+W6Rcpph81DtO7tQwRIDL0BQiPKALB4Q9rsRPiK7BtHahaAZ3sQHhwg7h+6Y0cCtUooTxC2YkXWEZvE0WBHj0Yq3CJCoVNFIRoezRkiS+IQl/FCGgmlkJLCmwznGVMoRJaQcj2QhoQY5arWzH5DUBE1Z25agAgDqCWJAyhJngD50pQbstVqNyO9KokdcmfsEUdmn5RNS2QtEi9socCNK2SuESZ0oYQ1GzYoETOoQuQdHFeSPWmEExMRLITpsJTgFEse8uGIRiIYJie2Z4QxgD9aNecNAgA7"/>

C.?<img width="101" height="31" src="data:image/png;base64,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"/>

D.?<img width="95" height="29" src="data:image/png;base64,R0lGODlhXwAdAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAEAAgBcABcAhQAAAAAAAAAAHR0AAB0AHR0AMgAAMwAcSAAzWh0zWh1GbDMAADIAHTIAMjMzWzNdXTNGRjNGbjNbgEgcAFozAFozHVszM0YzRltISF1/f0huf0RubmxGHW5GM39/XX9uSGaIiIBbM4iIZgECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwECAwb/QIBwSCwaj8ikcskEOI6WpnSabFSpRCtSi+16v8So8jlcCM1gJCXARgAuw8SyUmQHhGv2dxGQANBpdYJ4TW5EAkWIRH5KIUQDgUh3SQxNBUQURRSGQpVMl0IDjJFDkEYdQ6BLnmejf6MfUxqhZ0KIEwFuuJxHfAEKABQGS8NEvsBlRMVDy0LNf3rGQh8DD3wAAwGIIdoAIQKzSG6OQgd1bMXP40WAeXaTQyHNHEOuC4ym+aVDBEqqf0fgySvyrwyjCchqFXlWUCE2P5Co+ZEIgCIScmd4AeDQ7BlGaUL6HSoysIg5dvhoYdunMkkmPIqGTOAlEpMRTxxOCslppCaRj4SdpolaSbHoUCMThnBa0MzUEFZJhWgEtQBo1ZvhAPh5OSTWmXfvsLGBkC2mMXSa3uk04usZAAQc7BiyAzRYGbRFNJLaSySrFDlK6PD9IjgJmcFp4EU6bEQMYjByCkfSaxcMZa5GFMcZQk9I3cegkcARF7o0lgjBwLbZOOSz6ddJOEWGTRsArrWbiWiujTgIADs="/>

26.[单选题] 某反馈控制系统的传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535333176009114.png" title="202011161605535333176009114.png" alt="image.png"/>，则系统的极点为【 】。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535448551057838.png" title="202011161605535448551057838.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535383363084667.png" title="202011161605535383363084667.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535408857061303.png" title="202011161605535408857061303.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605535426358064323.png" title="202011161605535426358064323.png" alt="image.png"/>

27.[单选题] 外界干扰信号一般作用在（ ）。

A.执行机构

B.测量装置

C.控制对象

D.控制器

28.[单选题] 控制系统中，（ ）。

A.系统阶次越高，系统稳定误差越大

B.系统阶次越高，增益越大，系统稳定误差越小

C.系统型次越高，增益越大，系统稳定误差越小

D.系统型次越高，增益越大，系统稳定误差越大

29.[单选题] <img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605534600214023422.png" title="202011161605534600214023422.png" alt="image.png"/>的拉氏变换为【 】。

A.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605534618455067381.png" title="202011161605534618455067381.png" alt="image.png"/>

B.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605534653100004215.png" title="202011161605534653100004215.png" alt="image.png"/>

C.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605534671975096563.png" title="202011161605534671975096563.png" alt="image.png"/>

D.<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605534635716034649.png" title="202011161605534635716034649.png" alt="image.png"/>

30.[单选题] 典型欠阻尼二阶系统超调量大于5％，则其阻尼的范围为（ ）。

A.0<ξ<0.707

B.ξ>1

C.1>ξ>0.707

D.0<ξ<1

31.[主观填空题] 奈奎斯特图是在复平面内用不同频率的矢量端点轨迹来表示系统的 。

A.

32.[主观填空题] 某系统的稳态斜坡误差为一非零常数，则此系统是 型系统。

A.

33.[主观填空题] 频率特性的表示方法有奈奎斯特图、 和尼柯尔斯图。

A.

34.[主观填空题] 当系统为Ⅱ型系统时，其奈氏图起始于相位角为 的无穷远处，其渐近线为一条平行于实轴的直线。

A.

35.[主观填空题] 若<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605635665710053003.png" title="202011181605635665710053003.png" alt="image.png"/>，则<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605635682381067153.png" title="202011181605635682381067153.png" alt="image.png"/> 。

A.

36.[主观填空题] 积分环节的对数相频特性为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605629369727019742.png" title="202011181605629369727019742.png" alt="image.png"/> 。

A.

37.[主观填空题] 二阶欠阻尼系统的上升时间、峰值时间和调整时间等指标，反映系统的 。

A.

38.[主观填空题] 降低系统开环增益，可增加系统的幅值裕量和相位裕量，从而 系统的稳定性。

A.

39.[主观填空题] 若负反馈控制系统的前向通道传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605455281481054463.png" title="202011151605455281481054463.png" alt="image.png"/>，反馈传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605455297946052200.png" title="202011151605455297946052200.png" alt="image.png"/>，则系统的闭环传递函数为 。

A.

40.[主观填空题] 某系统的稳态加速度误差为一非零常数，则此系统是 型系统。

A.

41.[主观填空题] 若系统传递函数的所有零点和极点均在s平面的左半平面内，则该系统称为 ；若系统传递函数有零点或极点在s平面的右半平面内，则该系统称为非最小相位系统。

A.

42.[主观填空题] 大多数控制系统均要求满足稳态精度和相对稳定性，其中稳态精度由系统的 决定，而相对稳定性由相位裕量和幅值裕量来决定。

A.

43.[主观填空题] 系统方框图是系统中各环节的功能和信号流向的 表示方法。

A.

44.[主观填空题] 二阶微分环节的传递函数为 。

A.

45.[主观填空题] 当二阶系统特征方程的根为不相等的负实根时，系统的阻尼比为 。

A.

46.[主观填空题] 单位加速度函数的数学表达式为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605629779292067536.png" title="202011181605629779292067536.png" alt="image.png"/> 。

A.

47.[主观填空题] 二阶系统的典型环节是 。

A.

48.[主观填空题] 某Ⅰ型系统的开环增益为K，该系统在单位斜坡信号作用下，其稳态误差为 。

A.

49.[主观填空题] 频域性能指标是根据 控制系统的性能要求制定的。

A.

50.[主观填空题] 延时环节的传递函数是 。

A.

51.[主观填空题] 已知象函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605457273011070658.png" title="202011161605457273011070658.png" alt="image.png"/>，则<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/16/202011161605457288965056310.png" title="202011161605457288965056310.png" alt="image.png"/>的初值为 。

A.

52.[主观填空题] 某环节的传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605629009372083953.png" title="202011181605629009372083953.png" alt="image.png"/>，该环节是 。

A.

53.[主观填空题] 大多数控制系统均要求满足稳态精度和相对稳定性，其中稳态精度由系统的开环增益决定，而相对稳定性由相位裕量和 来决定。

A.

54.[主观填空题] 某系统的脉冲响应函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605601718252090435.png" title="202011171605601718252090435.png" alt="image.png"/>，则该系统的传递函数为 。

A.

55.[主观填空题] 当系统的输入和输出已知时，求系统结构与参数的问题，称为 。

A.

56.[主观填空题] 控制系统的时间响应曲线从零时刻出发第一次达到并永远保持在某一允许的误差范围所需要的时间称为 。

A.

57.[主观填空题] 当输入与输出均已知时，求系统的结构与参数，以建立系统的数学模型，即 。

A.

58.[主观填空题] 积分环节的对数幅频特性曲线为在<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605448991685052679.png" title="202011151605448991685052679.png" alt="image.png"/>处过零分贝线，且斜率为 的直线。

A.

59.[主观填空题] 稳态误差与开环传递函数、 和输入信号的形式有关。

A.

60.[主观填空题] 已知<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605638281898021553.png" title="202011181605638281898021553.png" alt="image.png"/>，其拉氏反变换<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/18/202011181605638297116082749.png" title="202011181605638297116082749.png" alt="image.png"/> 。

A.

61.[问答题] 绘制系统伯德图的步骤有哪些？

A.

62.[问答题] 控制系统的典型环节主要有哪几种？

A. 福建大学答案

63.[问答题] 时间响应由哪两部分组成？各部分的定义是什么？

A.

64.[问答题] 传递函数的特点有哪些？

A.

65.[问答题] 已知某系统的传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/14/202011141605347814312092928.png" title="202011141605347814312092928.png" alt="image.png"/>，试用劳思判据判断该系统的稳定性。

A.

66.[问答题] 单位反馈控制系统的开环传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605615907816069133.png" title="202011171605615907816069133.png" alt="image.png"/>，试求

（1）系统的闭环传递函数；

（2）系统的阻尼比<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605615926953081804.png" title="202011171605615926953081804.png" alt="image.png"/>和无阻尼自然频率<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605615946243073628.png" title="202011171605615946243073628.png" alt="image.png"/>；

（3）<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605615971052078581.png" title="202011171605615971052078581.png" alt="image.png"/>时的调整时间<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605616031507016387.png" title="202011171605616031507016387.png" alt="image.png"/>。

A.

67.[问答题] 由质量、弹簧和阻尼器组成的某机械控制系统的传递函数为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605613247750053303.png" title="202011171605613247750053303.png" alt="image.png"/>。已知质量<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605613269835092095.png" title="202011171605613269835092095.png" alt="image.png"/>，K为弹簧刚度，B为阻尼系数。若外力<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605613294363021767.png" title="202011171605613294363021767.png" alt="image.png"/>，由实验测得稳态输出<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/17/202011171605613319043034025.png" title="202011171605613319043034025.png" alt="image.png"/>，试求K和B各为多少？

A.

68.[问答题] 已知某控制系统在输入信号<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605446588922055601.png" title="202011151605446588922055601.png" alt="image.png"/>的作用下，测得系统的输出响应为<img src="http://zuoye.eduwest.com/resourcefile/uploadFiles/file/questionImgs2018/2020/11/15/202011151605446619784012573.png" title="202011151605446619784012573.png" alt="image.png"/>，试求在初始条件为零时，该系统的传递函数。

A.

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答案来源：www.ybaotk.com

西南大学22年9月0933 机械工程控制基础在线作业资料非答案

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