设开环系统的传递函数为 G(s)= 
，则其频率特性极坐标图与实轴交点的幅值 | G ( jω )|为 ( )
A: 1.0
B: 0.16
C: 0.8
D: 2.0
，则其频率特性极坐标图与实轴交点的幅值 | G ( jω )|为 ( )A: 1.0
B: 0.16
C: 0.8
D: 2.0
举一反三
- 设开环系统的传递函数为 G(s)= [img=191x65]17d62425d9e0e02.jpg[/img]，则其频率特性极坐标图与实轴交点的幅值 | G ( jω )|为 ( ) A: 1.0 B: 0.16 C: 0.8 D: 2.0
- 设积分环节的传递函数为G(s)=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/2428288e967b4a34ade338e5ea5c6ce0.png" >，则其频率特性幅值A(ω)=（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/33a8b22368e4429585bd402fd07fd717.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/492828f883b74680b8b22570ec3522cf.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/0f44b2548a3c424eaa326c2bf10bece6.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/b93eaefa6dd04794949e3987d24a0991.png" >
- 若某系统的传递函数为G（s）=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/40cffec1140048fda668f02b2697bfb6.png" >，则相应的频率特性G（jω）为（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/b0edaaca759a4b96b2746d371ba37485.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/17d6f581231244c386888754b3bf178d.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/e5485f9797b64853b91ce68c4697ff2e.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/5330c18e71b94abdbeaeff937486d18a.png" >
- 设开环系统频率特性为<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/d21a2327c99e49bd91ca22b052cbc0f6.png" />，则其频率特性的奈奎斯特图与负实轴交点的频率值<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/546cb297f51b4696b551151788da00a3.png" />为（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/2007ab8a0021434b957556551bd9732d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/2bbfd664c7ac40ad8014f612a59d6089.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/d30f9a3762d343d482c800ed0ef47e7c.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/5d17685250a34b2d8bd65e8b02b4325a.png" />
- 设开环系统传递函数为 <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202105/ff11ba85361845e79b72781355b8ab24.jpg" />，则其频率特性的奈氏图与负实轴交点的频率值 ω= （ ） A: 10 rad / s B: 0.5 rad / s C: 1 rad / s D: 0.1 rad / s