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11pt;">1.5</span><span style="line-height: 11pt; text-indent: 0pt; font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">主要研究内容</span></p> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">本文从摩擦产生振动的角度入手，由于数控机床在产生爬行的动作时伴随着振动产 生，故确定爬行的模型后，在爬行的仿真模型中加入模拟的振动源，分析外加振动对爬 行造成的影响。经过大量的数据实验分析，外加振动源的方法能够改善爬行，并且改善 效果较好，但由于没有达到抑制爬行的目的，故尝试引入</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制系统来抑制爬行，最 终确定出两者结合效果最佳。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><!--[if !supportLists]--><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">(1) </span><!--[endif]--><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">根据数控机床机械进给系统工作原理，建立机床进给系统的物理模型和数学模 型，分析产生爬行的机理，确定导致爬行产生的每一个影响因子。在</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">ADAMS</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">中建立爬 行模型，调整每个爬行因子的参数，确定能够抑制爬行的最优参数比和各个爬行因子对 爬行的影响程度。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><!--[if !supportLists]--><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">(2) </span><!--[endif]--><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">在</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">ADAMS</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">平台中，加入仿真的模拟正弦振动源，调整振动源的幅值和频率， 将模型进行仿真分析。工作台在工作过程中因摩擦所产生的振动是无规则的，故想要外 加振动源来耦合工作台的振动来达到改善爬行的目的、降低爬行发生的频率，仿真后效 果比较理想。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><!--[if !supportLists]--><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">(3) </span><!--[endif]--><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">由于</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">是最适合控制不确定系统结构和参数的机构，故在</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">ADAMS</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">模型中外 加小系统，即相当于在工作台上加入</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制系统，整定三个环节的增益参数，选取最 优参数进行参数化计算。通过仿真模拟后，发现此方法对于改善爬行很实用，因为加入 </span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制不需要精准的仿真模型，而且经济实惠，节省了大量的人力和时间。当在振动 改善不良的情况下再加入</span><span class="16" style="font-family: Georgia; letter-spacing: 0pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制时，能够完全克服爬行现象产生，达到了理想的效果。</span></p> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"> </p> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><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“振动对数控机床进给系统爬行的影响”，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> <p class="NewStyle17" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <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> <a href='/index.php?case=tag&act=show&tag=%E6%95%B0%E6%8E%A7%E6%9C%BA%E5%BA%8A' target='_blank'>数控机床</a> <!-- 分类 --> <div class="blank10"></div> 分类： <a href='/bethel/type/jnc/type-1.html' target='_blank'>加工中心</a> <div class="blank30"></div> <!--自动调用自定义字段--> <div class="blank20"></div> <div class="blank30"></div> <!-- 投票 --> <script src="/index.php?case=vote&act=view&aid=987"></script> <!-- 自定义表单开始 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