成考院校在线答案
- 2022-09-12 [多选] <p class="MsoNormal">9、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">对控制系统进行校正的实质是（ <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 [判断] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">13、<span class="GramE"><span style="mso-bidi-font-size:10.5pt;font-family:黑体">由实频特性</span></span><span style="mso-bidi-font-size:10.5pt;font-family:黑体">、<span class="GramE">虚频特性</span>就能求得幅频特性、相频特性。</span><span style="font-size:12.0pt;font-family:黑体">（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">14、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-weight:bold">对控制系统实施控制的实质就是“利用偏差，纠正偏差”的过程。</span><span style="font-size:12.0pt;font-family:黑体">（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">15、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-weight:bold">Ⅰ型系统<span class="GramE">在阶跃信号</span>输入下，其稳态误差为<span lang="EN-US">0</span>。</span><span style="font-size:12.0pt;font-family:黑体">（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">18、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">开环传递函数是指开环控制系统的传递函数</span><span style="font-family:黑体">。</span><span style="font-size:12.0pt;font-family: 黑体">（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="margin-top:15.6pt;mso-para-margin-top:1.0gd">20、<span style="font-size:12.0pt;font-family:黑体">线性系统与非线性系统的根本区别在于：线性系统满足叠加原理，而非线性系统不满足叠加原理<span style="mso-bidi-font-weight:bold">。（ </span>）<span lang="EN-US" style="color:red"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">21、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">机械控制系统正常工作的首要条件是（<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">24、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">对于传递函数难以获得的控制系统，可以采用系统辨识的方法，即（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>），从而间接获得该系统的传递函数。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">25、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">闭环控制系统是指系统中有（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。</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="margin-top:15.6pt;mso-para-margin-top:1.0gd">27、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">线性系统的输入信号为<span lang="EN-US" style="mso-bidi-font-weight:bold"><sub> <!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"></v:stroke> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"></v:f> <v:f eqn="sum @0 1 0"></v:f> <v:f eqn="sum 0 0 @1"></v:f> <v:f eqn="prod @2 1 2"></v:f> <v:f eqn="prod @3 21600 pixelWidth"></v:f> <v:f eqn="prod @3 21600 pixelHeight"></v:f> <v:f eqn="sum @0 0 1"></v:f> <v:f eqn="prod @6 1 2"></v:f> <v:f eqn="prod @7 21600 pixelWidth"></v:f> <v:f eqn="sum @8 21600 0"></v:f> <v:f eqn="prod @7 21600 pixelHeight"></v:f> <v:f eqn="sum @10 21600 0"></v:f> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path> <o:lock v:ext="edit" aspectratio="t"></o:lock> </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:1in; height:15.75pt' o:ole=""> <v:imagedata src="JXGCKZJC%203.files/image001.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="96" height="21" v:shapes="_x0000_i1025" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%203.files/image002.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1025" DrawAspect="Content" ObjectID="_1672753323"> </o:OLEObject> </xml><![endif]--></span><span style="mso-bidi-font-weight:bold">，则其输出信号响应频率为</span>（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p>