bjzhangwei 发表于 2007-5-12 23:18:52

学工控的大虾帮忙做这个题

<P><STRONG><FONT size=3>1\已知控制系统的传递函数&nbsp;&nbsp;&nbsp; G(s)=10/(s<SUP>2</SUP>+2S+5&nbsp;) 求其单位脉冲响应C(t)</FONT></STRONG></P>
<P><STRONG><FONT size=3>2\设系统如图,为了使闭环极点S=-1
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<P><FONT face=宋体>±j√3  </FONT><FONT face=宋体>试确定反馈系数Kb  的数值,最后利用求出的Kb 值画出轨迹图</FONT></P></TD></TR></TBODY></TABLE></SPAN></TD>
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<TD style="BORDER-RIGHT: #efdeea; BORDER-TOP: #efdeea; BORDER-LEFT: #efdeea; BORDER-BOTTOM: #efdeea; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent" vAlign=top align=left height=19><v:line id=_x0000_s1027 style="Z-INDEX: 2; POSITION: absolute" from="35.25pt,23.25pt" to="89.25pt,23.25pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><v:stroke endarrow="block"><FONT face=宋体></FONT></v:stroke></v:line><v:oval id=_x0000_s1028 style="MARGIN-TOP: 13.5pt; Z-INDEX: 3; MARGIN-LEFT: 87.75pt; WIDTH: 12.75pt; POSITION: absolute; HEIGHT: 18pt" strokecolor="windowText " o:insetmode="auto" fillcolor="window "><FONT face=宋体></FONT></v:oval><v:line id=_x0000_s1029 style="Z-INDEX: 4; POSITION: absolute" from="102pt,22.5pt" to="140.25pt,22.5pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><v:stroke endarrow="block"><FONT face=宋体></FONT></v:stroke></v:line><v:rect id=_x0000_s1030 style="MARGIN-TOP: 6.75pt; Z-INDEX: 5; LEFT: 14px; MARGIN-LEFT: 141.75pt; WIDTH: 40.5pt; POSITION: absolute; TOP: 247px; HEIGHT: 29.25pt" strokecolor="windowText " o:insetmode="auto" fillcolor="window "><v:textbox style="mso-direction-alt: auto">
<DIV style="TEXT-ALIGN: left"><FONT class=font0 face=宋体>K/S<SUP>2</SUP></FONT></DIV></v:textbox></v:rect><v:line id=_x0000_s1031 style="Z-INDEX: 6; POSITION: absolute; flip: y" from="183pt,20.25pt" to="231.75pt,21pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><v:stroke endarrow="block"><FONT face=宋体></FONT></v:stroke></v:line><v:line id=_x0000_s1032 style="Z-INDEX: 7; POSITION: absolute; flip: y" from="93.75pt,33.75pt" to="93.75pt,67.5pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><v:stroke endarrow="block"><FONT face=宋体></FONT></v:stroke></v:line><v:line id=_x0000_s1033 style="Z-INDEX: 8; POSITION: absolute; flip: y" from="93pt,66pt" to="2in,66.75pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><FONT face=宋体></FONT></v:line><v:rect id=_x0000_s1034 style="MARGIN-TOP: 54.75pt; Z-INDEX: 9; MARGIN-LEFT: 130.5pt; WIDTH: 72.75pt; POSITION: absolute; HEIGHT: 20.25pt; mso-wrap-style: tight" strokecolor="windowText " o:insetmode="auto" fillcolor="window "><v:textbox style="mso-direction-alt: auto">
<DIV style="TEXT-ALIGN: left"><FONT class=font0 face=宋体>1+Kbs</FONT></DIV></v:textbox></v:rect><v:line id=_x0000_s1035 style="Z-INDEX: 10; POSITION: absolute; flip: x" from="203.25pt,66pt" to="218.25pt,66pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><v:stroke endarrow="block"><FONT face=宋体></FONT></v:stroke></v:line><v:line id=_x0000_s1037 style="Z-INDEX: 11; POSITION: absolute; flip: y" from="217.5pt,21.75pt" to="217.5pt,66pt" coordsize="21600,21600" strokecolor="windowText " o:insetmode="auto"><FONT face=宋体></FONT></v:line><v:oval id=_x0000_s1038 style="MARGIN-TOP: 20.25pt; Z-INDEX: 12; MARGIN-LEFT: 212.25pt; WIDTH: 6pt; POSITION: absolute; HEIGHT: 6pt" strokecolor="windowText " o:insetmode="auto" fillcolor="window "><FONT face=宋体></FONT></v:oval><SPAN style="mso-ignore: vglayout2">
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<TD style="BORDER-RIGHT: #efdeea; BORDER-TOP: #efdeea; BORDER-LEFT: #efdeea; BORDER-BOTTOM: #efdeea; BACKGROUND-COLOR: transparent"><FONT face=宋体>C(s)</FONT></TD>
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随风而去 发表于 2007-6-9 18:18:16

Re: 学工控的大虾帮忙做这个题

这是自控原理里面的题,你看看书的前四章吧,这是前四章的内容

:)

zyf0839 发表于 2007-6-13 19:40:28

Re: 学工控的大虾帮忙做这个题

反馈里面的。。

wangxi593 发表于 2007-6-19 09:16:44

Re: 学工控的大虾帮忙做这个题

C(s)=G(s)*R(s);C(t)是C(s)的反拉氏变换函数。
你那图看不见,做不了,不过极点就是G(s)的分母=0时,S的值,你根据这来做吧,不懂联系QQ:232257358

yangqiang 发表于 2007-6-19 18:47:27

Re: 学工控的大虾帮忙做这个题

帮不了你啦---凉水壶。这种计算题要去看书才做得了。
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