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单选题 已知系统的单位脉冲响应函数为
,则系统的传递函数是( )
A. 
B. 
C. 
D. 
学科：机械工程控制基础
时间：2024-10-31 09:52:36
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题目1单选题
若某单位负反馈控制系统的开环传递函数为<img src="https://tihai-oss-cloud.itihey.com/img/7b6e0018519317b0bcf7d02a2a6c226f.png">,则该系统的特征方程为 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/8407ee8e4e9545fc7df61c38c6235258.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/1c1f60257b6eae3e70abe49e18a7c8b5.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/fcdf3e08eb70c7844a911be1b94b5fea.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/f527d13cb0a95c0da2a68836798a8604.png">
题目2单选题
已知系统的单位脉冲响应函数为<img src="https://tihai-oss-cloud.itihey.com/img/4bad7b6b52d2b50657235adeb7bd3a9f.png">,则系统的传递函数是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/ab526d0e163230fde2d8493a4b8e1912.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/bf8a5ed2deb8b42ba263afc5c0040e2a.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0c784b648b9f40b10a1341c906c9814c.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/a068e08f8aa71a64278b7bdf7f34338e.png">
题目3单选题
系统稳定的充分必要条件是其特征方程的所有根均具有( )A. 正实部B. 负实部C. 正虚部D. 负虚部
题目4单选题
对于欠阻尼的二阶系统,超调量<img src="https://tihai-oss-cloud.itihey.com/img/80fe6ddcdb4860f3de77bf99e9a50d35.png">解释正确的是( )A. 超调量<img src="https://tihai-oss-cloud.itihey.com/img/80fe6ddcdb4860f3de77bf99e9a50d35.png">只与固有频率有关B. 超调量<img src="https://tihai-oss-cloud.itihey.com/img/80fe6ddcdb4860f3de77bf99e9a50d35.png">只与阻尼比有关C. 超调量<img src="https://tihai-oss-cloud.itihey.com/img/80fe6ddcdb4860f3de77bf99e9a50d35.png">与阻尼比、固有频率均有关D. 超调量<img src="https://tihai-oss-cloud.itihey.com/img/80fe6ddcdb4860f3de77bf99e9a50d35.png">只与快速性有关
题目5单选题
主导极点的特点是( )A. 距离虚轴很近B. 距离实轴很近C. 距离虚轴很远D. 距离实轴很远
题目6单选题
系统的开环传递函数为<img src="https://tihai-oss-cloud.itihey.com/img/9b9e51accce006315ccc2477af3020d5.png">,则系统的型别为( )A. 0型系统B. Ⅲ型系统C. Ⅱ型系统D. Ⅰ型系统
题目7单选题
如果输入信号为单位加速度函数时,系统的稳态误差为0,则此系统为( )A. 0型系统B. I型系统C. II型系统D. III型系统
题目8单选题
已知输入信号为t,系统的型别为γ=2,则稳态误差<img src="https://tihai-oss-cloud.itihey.com/img/ee4ef9214538750f2119cc721d69e723.png">等于( )A. 0B. <img src="https://tihai-oss-cloud.itihey.com/img/cc83832bd05df1fee19f1b442a538348.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/a0854a51ab9b9bc8d2646beb31ddb306.png">D. ∞
题目9单选题
已知输入信号为l(t),系统的型别为γ=2,则稳态误差<img src="https://tihai-oss-cloud.itihey.com/img/ee4ef9214538750f2119cc721d69e723.png">等于( )A. 0B. <img src="https://tihai-oss-cloud.itihey.com/img/cc83832bd05df1fee19f1b442a538348.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/a0854a51ab9b9bc8d2646beb31ddb306.png">D. ∞
题目10单选题
已知输入信号为l(t),系统的型别为γ=0,则稳态误差<img src="https://tihai-oss-cloud.itihey.com/img/ee4ef9214538750f2119cc721d69e723.png">等于( )A. 0B. <img src="https://tihai-oss-cloud.itihey.com/img/cc83832bd05df1fee19f1b442a538348.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/a0854a51ab9b9bc8d2646beb31ddb306.png">D. ∞
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