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style="font-family: SimSun;">2. </span></span></a><span class="20" style="line-height: 13pt; background-color: transparent;">2数控加工中心龙门磁悬浮系统结构<br /> </span> <!--[endif]--></p> <p class="210" style="margin-top:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;background: transparent"><span class="2">龙门移动数控加工中心移动横梁由其下方的两个电磁悬浮系统共同悬浮，电磁悬 浮系统的控制精度决定了横梁的悬浮精度和加工部件的精度。横梁两侧和上方都设置 有导向单元，从而实现悬浮横梁水平方向的移动。导向水平方向运动单元与竖直方向 悬浮单元都是采用吸引型电磁悬浮系统。由于悬浮横梁由两个电磁悬浮系统共同悬 浮，因此两个电磁悬浮系统需要保持很好的协调同步运行才能保证悬浮横梁水平方向 具有较高的精度<sup>[24]</sup>。</span></p> <p class="22" style="margin-top:0cm;margin-right:0cm;margin-bottom:19.45pt; margin-left:0cm;line-height:13.0pt;mso-line-height-rule:exactly;mso-pagination: lines-together;page-break-after:avoid;background:transparent"><a name="bookmark9"><span class="20"><span style="font-family: SimSun;">2. </span></span></a><span class="20">3电磁悬浮系统原理及其数学模型</span></p> <p class="210" style="margin-top:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:11.0pt;mso-line-height-rule:exactly;background: transparent"><span class="2">图</span><span class="2"><span style="font-family: SimSun;">2.2</span></span><span class="2">为单电磁悬浮系统的结构示意图。</span></p> <p class="210" style="margin-top:0cm;margin-right:12.0pt;margin-bottom:0cm; margin-left:0cm;margin-bottom:.0001pt;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;background: transparent"><span class="2">图</span><span class="2"><span style="font-family: SimSun;">2.2</span></span><span class="2">中上端为固定导轨，下端为被悬浮的横梁。</span><span class="2TimesNewRoman26"><span lang="EN-US" style="font-size: 11.5pt;">m</span></span><span class="2">为悬浮横梁的一半质量，</span><span class="2TimesNewRoman22"><span lang="EN-US" style="font-size: 11.5pt;">m</span></span><span class="2">⑷ 为电磁线圈的感应出来的电压；</span><span class="2TimesNewRoman26"><span lang="EN-US" style="font-size: 11.5pt;">FGcj</span></span><span class="21pt">为电磁悬浮系统的电磁力；外界干扰力或 </span><span class="2">扰动力；</span><span class="2TimesNewRoman26"><span lang="EN-US" style="font-size: 11.5pt;">C</span></span><span class="21pt"><span style="font-family: SimSun;">(/)</span></span><span class="21pt">为悬浮气隙；为悬浮气隙磁通；为漏磁通；</span></p> <p class="210" style="margin-top:0cm;margin-right:12.0pt;margin-bottom:0cm; margin-left:0cm;margin-bottom:.0001pt;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;background: transparent"><span class="2">单电磁悬浮系统运动时只考虑相对于导轨的运动而忽略导轨的形变及自身的弹 性形变。同时假设忽略：</span></p> <p class="210" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;mso-list:l0 level1 lfo1;tab-stops:52.3pt;background:transparent"><!--[if !supportLists]--><span style="font-family: SimSun;">(1)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2">铁芯的漏磁和边际效应。</span></p> <p class="210" style="margin-top:0cm;margin-right:12.0pt;margin-bottom:0cm; margin-left:0cm;margin-bottom:.0001pt;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;mso-list: l0 level1 lfo1;tab-stops:49.1pt;background:transparent"><!--[if !supportLists]--><span style="font-family: SimSun;">(2)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2">铁芯和导轨之间空气间隙磁阻。理想地认为电磁悬浮系统内只有线性的磁化 曲线，气隙上的磁通密度和磁场强度在铁芯上都是均勻分布的。</span></p> <p class="210" style="margin:0cm;margin-bottom:.0001pt;text-align:justify; text-justify:inter-ideograph;text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule: exactly;mso-list:l0 level1 lfo1;tab-stops:52.3pt;background:transparent"><!--[if !supportLists]--><span style="font-family: SimSun;">(3)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2">其他运动自由度，而只考虑竖直方向上的运动。</span></p> <p class="210" style="margin-top:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;background: transparent"><span class="2">规定向下的力为正方向，由牛顿第二运动定律推出力-加速度方程：</span><span class="1711pt"><span lang="EN-US" style="font-size: 11pt;"> </span></span></p> <p class="210" align="left" style="margin: 0cm 0cm 54.6pt; text-indent: 26pt; line-height: 23.5pt; background: transparent;"><span class="2">由于电磁铁和导轨之间的电阻被忽略了，所以悬浮气隙上集结了几乎所有电磁铁 与移动横梁所组成磁路的磁阻。则气隙有效磁阻为：</span><span style="line-height: 23.75pt; text-indent: 0cm; background-color: transparent;">悬浮系统的数学模型由加速度运动方程、电压-电流方程和 电磁感应力方程组成。由于电磁力表达式中含有电流和气隙的二次方向项，因此整个 悬浮系统的数学模型存在着非线性特性。所以电磁悬浮系统是一个非线性系统。</span></p> <p class="210" align="left" style="margin: 0cm 0cm 54.6pt; text-indent: 26pt; line-height: 23.5pt; background: transparent;"><span style="font-size:9.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">本文采摘自“数控加工中心龙门磁悬浮系统耦合分析及控制研究”，因为编辑困难导致有些函数、表格、图片、内容无法显示，有需要者可以在网络中查找相关文章！本文由伯特利数控整理发表文章均来自网络仅供学习参考，转载请注明！</span></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a href='/index.php?case=tag&act=show&tag=%E9%BE%99%E9%97%A8%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>龙门加工中心</a> <a href='/index.php?case=tag&act=show&tag=%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>加工中心</a> <a href='/index.php?case=tag&act=show&tag=%E6%95%B0%E6%8E%A7%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>数控加工中心</a> <a href='/index.php?case=tag&act=show&tag=CNC%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>CNC加工中心</a> <!-- 分类 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<p>在机测量技术由于其成本低、检测效率高、无需二次装夹等优势被广泛用于零件加工测量当中，使得五轴加工中心和五轴钻攻中心，同时又兼具测量功能。在机测量系统的构成如图1所示，硬件部分主要是由高精度探头、信号接收器、机床整个本体，软件部分由机床控制系统、测量软件等组成[8]。待零件加工完成… <a href="/bethel/5-aix/show-2959.html" target="_blank">[了解更多]</a></p> </div> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>05</span> <p>2024-11</p> </div> <h4><a title="五轴加工中心进给系统动态误差影响因素" href="/bethel/5-aix/show-2958.html" target="_blank">五轴加工中心进给系统动态误差影响因素</a></h4> <p>加工精度是影响机床性能和产品质量的主要难题，也是制约国家精密制造能力的重要因素。本文以五轴加工中心为对象，针对提升机床精度进行了研究。并且随着科技的发展，精密的仪器和零件在生产实践中占据的分量逐渐增加，在数控机床这种精密机器精度不断提高的同时，必须控制内外界环境的随机影响因素在… <a href="/bethel/5-aix/show-2958.html" target="_blank">[了解更多]</a></p> </div> <!-- 内容列表结束 --> </div> <!-- 相关文章结束 --> <!-- 页底推荐图文产品开始 --> <hr class="featurette-divider"> <!-- 页面标题开始 --> <div class="title"> <h3 class="wow bounceInDown" data-wow-delay="0.5s"><a href="/bethel/cnc">产品中心<small></small></a></h3> <span>——</span> </div> <!-- 页面标题结束 --> <div class="container"> <div class="blank30"></div> <!-- 中部开始 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