成考院校在线答案
- 2022-09-12 [多选] <p class="MsoNormal">3、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">改善反馈控制系统稳态性能的方法有（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）<span style="mso-bidi-font-weight:bold">。</span><span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [多选] <p class="MsoNormal">6、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">在下列的描述中，能判断系统稳定的依据是（ <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 [多选] <p class="MsoNormal">7、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">闭环控制系统的时域性能指标是定义在（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）基础上的。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [多选] <p class="MsoNormal">8、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">对控制系统的基本要求有</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning: 0pt">( )</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 [多选] <p class="MsoNormal">5、<span style="font-size:12.0pt;font-family:黑体">某控制系统的开环传递函数为<span lang="EN-US"><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_i1346" type="#_x0000_t75" style='width:83.25pt; height:30pt' o:ole=""> <v:imagedata src="JXGCKZJC%2061.files/image001.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="111" height="40" v:shapes="_x0000_i1346" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%2061.files/image002.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="4" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1346" DrawAspect="Content" ObjectID="_1672754258"> </o:OLEObject> </xml><![endif]--></span>，以下描述正确的是<span style="mso-bidi-font-weight:bold">（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。</span><span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [多选] <p class="MsoNormal">10、<span style="font-size:12.0pt;font-family:黑体">如果对某线性控制系统实施比例校正（<span lang="EN-US">P</span>校正），比例系数<span lang="EN-US"><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_i1383" type="#_x0000_t75" style='width:25.5pt; height:16.5pt' o:ole=""> <v:imagedata src="JXGCKZJC%2051.files/image001.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="34" height="22" v:shapes="_x0000_i1383" src="http://wljy.whut.edu.cn:80/uploadfiles/word/JXGCKZJC%2051.files/image002.gif"> <!--[endif]--></sub> <!--[if gte mso 9]><xml _tmplitem="4" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1383" DrawAspect="Content" ObjectID="_1672754060"> </o:OLEObject> </xml><![endif]--></span>，则其对系统的性能的影响为<span style="mso-bidi-font-weight:bold">（ <span lang="EN-US"><span style="mso-spacerun:yes"> </span></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">11、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-weight:bold">幅频特性表示控制系统的稳态输出，其幅值相对输入信号的幅值放大或缩小的特性。（ ）</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">17、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-weight:bold">最小相位系统一定是稳定的系统。</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">13、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-weight:bold">若系统开环极坐标图（<span lang="EN-US">Nyquist</span>图）包围了（<span lang="EN-US">-1</span>，<span lang="EN-US">j0</span>）点，系统闭环不稳定。</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">16、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-weight:bold">在判断系统稳定性时，<span class="GramE">劳</span>斯判据是代数判据，奈奎斯特判据是几何判据。</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>