成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">25、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">在控制系统中，信号的传递都为连续信号，则该系统属于（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）系统。</span><span lang="EN-US" style="font-family:黑体;color:red"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="tab-stops:275.25pt">28、<span style="mso-bidi-font-size: 10.5pt;font-family:黑体">临界阻尼二阶系统的<span class="GramE">单位阶跃稳态响应</span>为（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">26、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">若控制系统的开环传递函数为<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1030" type="#_x0000_t75" style='width:118.5pt;height:30.75pt' o:ole=""> <v:imagedata src="JXGCKZJC%206.files/image010.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="158" height="41" v:shapes="_x0000_i1030" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%206.files/image011.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1030" DrawAspect="Content" ObjectID="_1672754217"> </o:OLEObject> </xml><![endif]--></span>，则该系统属于（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）系统。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">28、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）是衡量系统的准确性的。 <span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="margin-top:7.8pt;mso-para-margin-top:.5gd">29、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">二阶系统的无阻尼固有频率<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1039" type="#_x0000_t75" style='width:15pt;height:18pt' o:ole=""> <v:imagedata src="JXGCKZJC%202.files/image029.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="20" height="24" v:shapes="_x0000_i1039" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%202.files/image030.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1039" DrawAspect="Content" ObjectID="_1672753019"> </o:OLEObject> </xml><![endif]--></span><span style="mso-bidi-font-weight:bold">等于其时间响应在</span>（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）<span class="GramE">时等幅正弦</span>振荡的频率。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" align="left" style="text-align:left">22、<span style="mso-bidi-font-size: 10.5pt;font-family:黑体">当系统传递函数的极点落在<span lang="EN-US">[s]</span>平面的虚轴上时，其系统的（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">34、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">过阻尼二阶系统的<span class="GramE">单位阶跃稳态响应</span>为（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">32、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">某系统传递函数的特征多项式为<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1031" type="#_x0000_t75" style='width:95.25pt;height:15pt' o:ole=""> <v:imagedata src="JXGCKZJC%206.files/image012.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="127" height="20" v:shapes="_x0000_i1031" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%206.files/image013.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1031" DrawAspect="Content" ObjectID="_1672754218"> </o:OLEObject> </xml><![endif]--></span>，式中<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1032" type="#_x0000_t75" style='width:50.25pt;height:12pt' o:ole=""> <v:imagedata src="JXGCKZJC%206.files/image014.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="67" height="16" v:shapes="_x0000_i1032" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%206.files/image015.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1032" DrawAspect="Content" ObjectID="_1672754219"> </o:OLEObject> </xml><![endif]--> </span>均为大于<span lang="EN-US">0</span>的常数，则系统稳定的条件是（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"><span style="mso-spacerun:yes"> </span> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">32、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">单位反馈控制系统的开环传递函数<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1029" type="#_x0000_t75" style='width:59.25pt;height:26.25pt' o:ole=""> <v:imagedata src="JXGCKZJC%201.files/image011.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="79" height="35" v:shapes="_x0000_i1029" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%201.files/image012.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1029" DrawAspect="Content" ObjectID="_1672752733"> </o:OLEObject> </xml><![endif]--></span>，则其闭环传递函数为（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">37、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">某系统的传递函数<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1050" type="#_x0000_t75" style='width:46.5pt;height:24pt' o:ole=""> <v:imagedata src="JXGCKZJC%201.files/image051.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="62" height="32" v:shapes="_x0000_i1050" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%201.files/image052.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1050" DrawAspect="Content" ObjectID="_1672752753"> </o:OLEObject> </xml><![endif]--></span>，当输入<span lang="EN-US"><sub> <!--[if gte vml 1]><v:shape id="_x0000_i1051" type="#_x0000_t75" style='width:57pt;height:14.25pt' o:ole=""> <v:imagedata src="JXGCKZJC%201.files/image053.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="76" height="19" v:shapes="_x0000_i1051" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%201.files/image054.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1051" DrawAspect="Content" ObjectID="_1672752754"> </o:OLEObject> </xml><![endif]--> </span>时，则其稳态输出的幅值为（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p>