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font-size: 12pt; font-family: 宋体;">实体碰撞干涉检验</span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">计算机三维实体碰撞检测一直是计算机图形学领域的一个研究热点</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">从</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 20 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">世纪</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 70 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">年代以来</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">有许多专家学者对三维运动体碰撞检测方法作了大量的研究工作</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">: 1988 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">年</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> Canny[6]</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">提出了基于</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> B- Rep </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">多面体的动态体与静态间的碰撞检测方法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">; 1989 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">年</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> Nobrio</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">等</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">[7]</span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">用八叉树实体表示检测动态与静态体间的碰撞问题</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">; 2004 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">年</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">,Ding</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">等人</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">[8]</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">研究了基于八叉树的碰撞检测算法并将其应用于</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> 5 </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">轴加工的干涉检测</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, Kim</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">等</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">[9]</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">用球面矢量</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> Voronoi</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">图来解决高速运动中的碰撞检测问题</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">; 2005 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">年</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, Ilushin</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">等</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">[10]</span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">针对多轴加工过程提出了一种采用射线跟踪</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">(Ray-tracing)</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">来检测实体干涉碰撞的方法。</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">总结这些研究不难发现</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">运动碰撞检测的算法可以分为</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt"> 3 </span><span style="font-size:12.0pt; font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">大类。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">1) </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">离散样本检测法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">: </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">对于运动物体</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">先取定一个时间样本</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">得到一个时间序列</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">再求出各运动物体在每个样本时刻的空间位置和方向</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">最后采用静态物体干涉检测算法来检测每一样本时刻各运动物体的相对状态。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体;mso-font-kerning: 0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">2) </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">扫描体求交法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">: </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">生成运动物体的空间扫描体</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">用扫描体来包含时间信息</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">通过扫描体间或扫描体与样本物体间的碰撞检测来完成整个样本空间、物体间的碰撞检测。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">3) </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">连续检测法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">: </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">把运动物体的特征数据</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">(</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">点线面</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">)</span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">的运动轨迹表达成时间的函数</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">推导出满足碰撞条件的各几何元素的方程</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">通过求解方程来求得发生碰撞的位置和时间。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">相比较而言</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">第</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 1 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">种方法的关键是样本空间的选取</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">若样本时间间隔太长</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">可能发生漏检</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">特别是对于高速运动状态下</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">漏检的可能性会很大</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">而若时间间隔短</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">则计算时间就会很长</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">; </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">第</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 2 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">种方法中的扫描体构造比较复杂</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">需要研究利用直线和扫描体交点问题来检测实体的碰撞</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">; </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">第</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 3 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">种方法比较适合于高速运动中的精确干涉检测</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">但是随着特征数据的增加</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">检测方程数量将急剧增加</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">检测时间会大大增加。从目前的应用情况看来</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">主要采用的还是前两种方法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">但是随着计算机性能的不断提高</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">第</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> 3 </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">种方法的应用也会越来越多。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">2.4 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">材料切除过程仿真</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体; mso-bidi-font-family:宋体;mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">对于材料切除过程仿真</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">国内外也有一些研究成果</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">主要集中在相应的算法方面。</span><span style="font-size:12.0pt; mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">如基于</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> Z- map </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">结构的算法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">[11]</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">、</span><span style="font-size:12.0pt;mso-font-kerning: 0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">基于</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> Dexel </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">模型的快速成型算法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">[12], </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">等等。总的来说</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">材料切除过程的仿真主要有两个功能</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">: </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">一是检测是否过切、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">干涉、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">碰撞</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">以检测</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">代码和刀位文件的正确性</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">; </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">二是通过逼真的三维动画来实现可视化仿真</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">为虚拟制造提供支撑环境。图</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> 2 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">为一个典型的材料切除仿真子系统的功能结构图。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体;mso-font-kerning: 0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><img src="/upload/images/201407/14053169682427.jpg" alt="" /></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">材料切除过程仿真一般包括</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 7 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">个功能模块</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">: </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">系统监控模块、</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> NC/CL(</span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">即刀位</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">)</span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">文件翻译模块、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">读取实体模型模块、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">动画仿真模块、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">碰撞检测模块、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">过切检测模块、实体消隐模块。系统的输入是</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">代码或</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> CL</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">文件</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">还有带有夹具、托盘的上线毛坯以及成型零件的实体模型文件</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">(</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">最常用实体的模型是</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> SLA</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">模型</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">即三角面片模型</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">其为商用</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> CAD</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">软件的通用实体输出格式标准</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">)</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">。在进行材料切除仿真之前</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">先由消隐模块对实体模型进行消隐预处理。在系统监控模块的控制下</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">由</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">代码</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">/</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">刀位文件翻译器逐条解释加工指令并进行毛坯与刀具的布尔差运算</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">; </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">以动画的形式实时地仿真材料切除过程</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">并同时检测是否过切或有碰撞干涉</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">若有则提示相应的错误信息</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">并将其记录到相应的日志文件。</span><span lang="EN-US" 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<span>——</span> </div> <!-- 页面标题结束 --> <hr class="featurette-divider"> <div class="container list-container"> <!-- 内容列表开始 --> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>11</span> <p>2024-12</p> </div> <h4><a title="U600S五轴加工中心视频" href="/bethel/video/show-3042.html" target="_blank">U600S五轴加工中心视频</a></h4> <p>此视频详细介绍了U600S高性能五轴加工中心各种参数及说明！… <a href="/bethel/video/show-3042.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="六角亭五轴加工工艺" href="/bethel/5-aix/show-2966.html" target="_blank">六角亭五轴加工工艺</a></h4> <p>本文以组合式六角亭模型为实例，分析工艺难点与加工可行性，指出该模型的加工难点是模型形状不规则和整体刚性差，并通过设计新的工艺方案解决加工难点，完成了模型整体的加工。新的加工工艺有助于提高加工效率和精度，为五轴数控加工提供了一个典型案例，对于五轴加工中心数控加工也具有指导作用和重要… <a href="/bethel/5-aix/show-2966.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="自适应控制方法在混联五轴加工中心中的应用" href="/bethel/5-aix/show-2965.html" target="_blank">自适应控制方法在混联五轴加工中心中的应用</a></h4> <p>宇匠数控 备注：为保证文章的完整度，本文核心内容由PDF格式显示，如未有显示请刷新或转换浏览器尝试，手机浏览可能无法正常使用！本文摘要：通过对混联五轴加工中心自适应深度学习控制方法的 研 究，可 知 此 方 法 的 创 新 之 处 在 于：１）建 立 了 机 床 的 运 动 学 … <a href="/bethel/5-aix/show-2965.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="五轴线性刀路的局部能量光顺和避免方法" href="/bethel/5-aix/show-2960.html" target="_blank">五轴线性刀路的局部能量光顺和避免方法</a></h4> <p>宇匠数控 备注：为保证文章的完整度，本文核心内容由PDF格式显示，如未有显示请刷新或转换浏览器尝试，手机浏览可能无法正常使用！本文摘要：１）本文建立了基于转角向量和双弦弓高的局部能量光顺算法，该方法以刀心点光顺前后最大许用偏移量作为约束，通过计算拐角处微小线段局部能量最优解，可使… <a href="/bethel/5-aix/show-2960.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="五轴加工中心和五轴钻攻中心在机测量探头补偿" href="/bethel/5-aix/show-2959.html" 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