【单选题】【消耗次数:1】
若某负反馈控制系统的开环传递函数为,则该系统的闭环特征方程为()。
与是否为单位反馈系统有关
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【单选题】 已知负反馈系统的开环传递函数为,则该系统的闭环特征方程为()。
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④  与是否为单位反馈系统有关
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②  <imgwidth="95"height="22"src="../uploadfiles/word/zdkzll002.files/image038.png">
③  <imgwidth="92"height="22"src="../uploadfiles/word/zdkzll002.files/image039.png">
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【单选题】 已知负反馈系统的开环传递函数为<imgwidth="134"height="42"src="http://wljy.whut.edu.cn//uploadfiles/word/zdkzll002.files/image050.png">,则该系统的闭环特征方程为()。
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②  <imgwidth="179"height="24"src="../uploadfiles/word/zdkzll002.files/image052.png">
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④  与是否为单位反馈系统有关
【单选题】 已知单位反馈系统的开环传递函数为,当输入信号是时,系统的稳态误差是()
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【单选题】 已知单位反馈系统的开环传递函数为,当输入信号是时,系统的稳态误差是()
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【单选题】 已知系统的开环传递函数为,则该系统的开环增益为()。
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【单选题】 已知系统的开环传递函数为,则该系统的开环增益为()。
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【单选题】 闭环控制系统又称为反馈系统系统。
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②  <imgwidth="93"height="47"src="../uploadfiles/word/zdkzll002.files/image045.png">
③  <imgwidth="86"height="47"src="../uploadfiles/word/zdkzll002.files/image046.png">
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①  <imgwidth="126"height="22"src="../uploadfiles/word/zdkzll002.files/image040.png">
②  <imgwidth="169"height="22"src="../uploadfiles/word/zdkzll002.files/image041.png">
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