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</span><span style="text-indent: 21pt;"> </span><span style="text-indent: 21pt; font-family: 宋体;">引言</span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family: 宋体;">这篇文章提出了一种根据</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">ARM9</span><span style="font-family: 宋体;">系列</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">S3C2410</span><span style="font-family: 宋体;">嵌入式微处理器和</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">DSP</span><span style="font-family: 宋体;">专用运动操控芯片</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">MCX314As</span><span style="font-family: 宋体;">的数控系统设计。其中</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">S3C2410</span><span style="font-family: 宋体;">处理器是典型的</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">32</span><span style="font-family: 宋体;">位</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">R ISC</span><span style="font-family: 宋体;">芯片</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">,</span><span style="font-family: 宋体;">具有体积小、</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">功</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">耗</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">低、</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">运</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">算</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">速</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">度</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">快、</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">片</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">内</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">集</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">成</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">度</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">高</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">等</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">优</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">点。</span><span lang="EN-US" style="font-family: Tahoma;">MCX314As</span><span style="font-family: 宋体;">是日本</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">NOVA</span><span style="font-family: 宋体;">公司推出的</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">4</span><span style="font-family: 宋体;">轴运动操控的专用</span><span lang="EN-US" style="font-family: Tahoma;">DSP</span><span style="font-family: 宋体;">集成电路</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">,</span><span style="font-family: 宋体;">通过这个集成电路能够操控步进电机驱动或有脉冲型伺服电机驱动的</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">4</span><span style="font-family: 宋体;">轴的方位、</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">速度和插补。选用</span><span lang="EN-US" style="font-family: Tahoma;">S3C2410</span><span style="font-family: 宋体;">和</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">MCX314As</span><span style="font-family: 宋体;">规划的经济型数控系统的方案</span><span class="apple-converted-space"><span lang="EN-US" style="font-family: Tahoma;"> </span></span><span lang="EN-US" style="font-family: Tahoma;">,</span><span style="font-family: 宋体;">具有高集成度、</span><span style="font-family: Tahoma;"> </span><span style="font-family: 宋体;">高可靠性和低成本等显著特点。</span><span lang="EN-US"><!--[endif]--></span><img src="/upload/images/201407/14051726230029.jpg" alt="" /></p> <p class="MsoNormal" align="left" style="text-indent: 21pt;"><span lang="EN-US">2</span><span style="mso-bidi-font-size:10.5pt;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="mso-bidi-font-size:10.5pt;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">嵌入式数控系统的硬件体系结构</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; 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: 21pt;"><span style="mso-bidi-font-size: 10.5pt;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">嵌入式数控系统的硬件体系结构与典型的运动控制系统的结构基本相同</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">主要有输入输出装置、</span> <span style="mso-bidi-font-size:10.5pt;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">数控制装置、</span> <span style="mso-bidi-font-size:10.5pt; 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">驱动控制装置和机床电器逻辑控制装置四部分组成</span><span lang="EN-US">[ 4 ]</span><span style="mso-bidi-font-size:10.5pt;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</span><span lang="EN-US"> 1</span><span style="mso-bidi-font-size:10.5pt;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">为嵌入式数控系统的硬件体系总体结构图。在图</span><span lang="EN-US"> 1</span><span style="mso-bidi-font-size:10.5pt;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">中</span><span lang="EN-US"> , PC</span><span style="mso-bidi-font-size:10.5pt;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">机用虚线围起来</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">是因为</span><span lang="EN-US"> PC</span><span style="mso-bidi-font-size:10.5pt;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">机不是该嵌入式数控系统的主要组成部分</span><span lang="EN-US"> , PC</span><span style="mso-bidi-font-size:10.5pt;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">机的存在只是作为嵌入式数控系统的开发平台</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">或者在实际使用中作为数控系统的数控加工文件的输入输出装置</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">也可以把</span><span lang="EN-US"> PC</span><span style="mso-bidi-font-size:10.5pt;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">机和嵌入式数控系统进行联网</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">组成强大的数控网络。输入装置是将数控加工程序等各种信息输入数控的装置</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">输入内容及数控系统的工作状态可以通过输出装置观察。我们设计的嵌入式数控系统的输入装置是键盘、</span><span lang="EN-US"> PC</span><span style="mso-bidi-font-size:10.5pt;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">机或者各种</span><span lang="EN-US"> U</span><span style="mso-bidi-font-size:10.5pt;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">盘等移动存储设备</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">输出装置是</span><span lang="EN-US"> LCD</span><span style="mso-bidi-font-size:10.5pt;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">显示屏。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;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: 21pt;"><span style="font-family: 宋体;">体系硬件渠道由</span><span lang="EN-US" style="font-family: Tahoma;"> ARM9</span><span style="font-family: 宋体;">的</span><span lang="EN-US" style="font-family: Tahoma;"> S3C2410</span><span style="font-family: 宋体;">主控板和</span><span lang="EN-US" style="font-family: Tahoma;"> MCX314As</span><span style="font-family: 宋体;">运动控制板构成</span><span lang="EN-US" style="font-family: Tahoma;"> ,</span><span style="font-family: 宋体;">这样分隔规划有利于使整个数控体系的硬件体系结构及各个模块的接口模块化和标准化。为将来模块或许体系的硬件维护和升级带来极大的方便。</span><span lang="EN-US" style="font-family: Tahoma;"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 21pt;"><span lang="EN-US">MCX314As</span><span style="mso-bidi-font-size:10.5pt;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">日本</span><span lang="EN-US"> NOVA</span><span style="mso-bidi-font-size:10.5pt;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">电子有限公司研制的</span><span lang="EN-US"> DSP</span><span style="mso-bidi-font-size:10.5pt;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">运动控制专用芯片</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">性能优良、</span> <span style="mso-bidi-font-size:10.5pt;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">接口简单、</span> <span style="mso-bidi-font-size:10.5pt;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">编程方便、</span> <span style="mso-bidi-font-size:10.5pt;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">工作可靠</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">可广泛应用于</span><span lang="EN-US"><a href="http://www.bethel-cnc.com/" target="_blank"><span lang="EN-US" style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">数控机床</span></a></span><span style="mso-bidi-font-size:10.5pt;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="mso-bidi-font-size:10.5pt;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">机器人等领域的运动控制</span><span lang="EN-US">[ 5 ]</span><span style="mso-bidi-font-size:10.5pt; 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 lang="EN-US" style="mso-bidi-font-size:10.5pt;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: 21pt;"><span lang="EN-US">MCX314As</span><span style="mso-bidi-font-size:10.5pt;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">是以单一芯片而可控制</span><span lang="EN-US"> 4</span><span style="mso-bidi-font-size:10.5pt; 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">轴的脉冲序列输出驱动伺服马达、</span> <span style="mso-bidi-font-size:10.5pt;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">步进马达的运动控制芯片</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">可以进行各轴独立的定位控制、</span> <span style="mso-bidi-font-size:10.5pt;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">速度控制</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">另一方面亦可在</span><span lang="EN-US"> 4</span><span style="mso-bidi-font-size:10.5pt; 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">轴中任意的选择</span><span lang="EN-US"> 2</span><span style="mso-bidi-font-size:10.5pt;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">轴或是</span><span lang="EN-US"> 3</span><span style="mso-bidi-font-size:10.5pt;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">轴来进行圆弧、</span> <span style="mso-bidi-font-size:10.5pt; 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">直线、</span> <span style="mso-bidi-font-size:10.5pt;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">位模式插补</span><span lang="EN-US">[ 1 ]</span><span style="mso-bidi-font-size:10.5pt;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 lang="EN-US" style="mso-bidi-font-size:10.5pt;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: 21pt;"><span style="mso-bidi-font-size: 10.5pt;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</span><span lang="EN-US"> ARM9</span><span style="mso-bidi-font-size:10.5pt;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">主控板上设计有一个总线接口电路</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">这个电路已经把</span><span lang="EN-US"> S3C2410</span><span style="mso-bidi-font-size:10.5pt;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">芯片上的一些信号线包括</span><span lang="EN-US"> 16</span><span style="mso-bidi-font-size:10.5pt; 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">位数据线、</span><span lang="EN-US"> 12</span><span style="mso-bidi-font-size:10.5pt;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">位地址线、</span> <span style="mso-bidi-font-size:10.5pt;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">片选信号和一些读写控制信号线引出来</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">方便用户扩展应用电路。运动控制芯片</span><span lang="EN-US"> MCX314As</span><span style="mso-bidi-font-size:10.5pt;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">与</span><span lang="EN-US"> S3C2410</span><span style="mso-bidi-font-size:10.5pt;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">处理器的连接就是通过这个标准的总线接口电路</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">把两者的数据线、</span> <span style="mso-bidi-font-size:10.5pt;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">地址线、</span> <span style="mso-bidi-font-size:10.5pt; 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">读写控制线、</span> <span style="mso-bidi-font-size:10.5pt;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">片选信号和中断等信号连接起来。控制系统硬件结构</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">如图</span><span lang="EN-US"> 2</span><span style="mso-bidi-font-size:10.5pt;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">所示。从图中可以看出</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">除了数控装置采用了上下位分机的设计方法</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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</span><span lang="EN-US"> ARM9</span><span style="mso-bidi-font-size:10.5pt;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">的主控板的设计上也采用了</span><span lang="EN-US"> ARM9</span><span style="mso-bidi-font-size:10.5pt;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">核心板和</span><span lang="EN-US"> ARM9</span><span style="mso-bidi-font-size:10.5pt;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">主控用户板的这种分开的模块化结构。核心板是</span><span lang="EN-US"> ARM9</span><span style="mso-bidi-font-size:10.5pt;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">处理器的最小系统</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">只包括简单的</span><span lang="EN-US"> S3C2410</span><span style="mso-bidi-font-size:10.5pt;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">芯片、</span><span lang="EN-US"> RAM</span><span style="mso-bidi-font-size:10.5pt;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">和</span><span lang="EN-US"> ROM</span><span style="mso-bidi-font-size:10.5pt;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">存储器</span><span lang="EN-US">;</span><span style="mso-bidi-font-size:10.5pt;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">而用户板可以灵活剪裁设计</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">根据实际需要可以在板上设计</span><span lang="EN-US"> LCD</span><span style="mso-bidi-font-size:10.5pt;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">接口、</span><span lang="EN-US"> US B</span><span style="mso-bidi-font-size:10.5pt;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">接口、</span> <span style="mso-bidi-font-size:10.5pt; 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">以太网接口、</span><span lang="EN-US">IIS</span><span style="mso-bidi-font-size:10.5pt;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">接口、</span><span lang="EN-US"> UART</span><span style="mso-bidi-font-size:10.5pt;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">接口、</span><span lang="EN-US"> ADC</span><span style="mso-bidi-font-size:10.5pt;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">模数转换接口以及</span><span lang="EN-US"> GPRS</span><span style="mso-bidi-font-size:10.5pt; 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">等外部硬件接口</span><span lang="EN-US">[ 3 ]</span><span style="mso-bidi-font-size:10.5pt;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">。核心板与用户板两者以标准的接口连接</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">有利于用户的升级或二次开发</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">用户可以在不改变核心部分的情况下需只修改剪裁用户板</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt; 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">或者在不改变用户板的情况下更换核心板</span><span lang="EN-US"> ,</span><span style="mso-bidi-font-size:10.5pt;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">就能够开发升级嵌入式数控系统数控装置的硬件。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:宋体;mso-bidi-font-family:宋体;mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span lang="EN-US"><img src="/upload/images/201407/14051726370677.jpg" alt="" /><br /> <!--[endif]--></span></p> <p class="MsoNormal" style="text-indent:21.0pt;mso-char-indent-count:2.0"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman""> </span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">总之</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">整个嵌入式数控系统的硬件体系结构属于典型的运动控制系统</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">使用基于</span><span lang="EN-US"> ARM9</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">和</span><span lang="EN-US"> MCX314As</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">处理器作为数控系统控制核心</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">尽量使得系统的各功能部分模块化</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">接口标准化</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">有利于系统的开放性的提高</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">易于维护和升级。在基于</span><span lang="EN-US"> ARM9</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的嵌入式数控装置中</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">硬件部分主要由</span><span lang="EN-US">ARM9</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">处理器</span><span lang="EN-US"> S3C2410</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">和</span><span lang="EN-US"> MCX314As</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">运动控制卡组成。以</span><span lang="EN-US">S3C2410</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">处理器芯片为核心的板卡为上位机</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">用于预处理、键盘、</span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">显示、</span> <span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">外部通讯等管理工作</span><span lang="EN-US">; </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">以运动控制芯片</span><span lang="EN-US">MCX314As</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">及其外围电路组成的板卡为下位机</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">用于根据上位机的命令和数据进行计算和处理然后输出控制脉冲。运动控制器是系统的核心器件</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">完成系统的大部分功能。</span><span lang="EN-US">S3C2410</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">与</span><span lang="EN-US"> MCX314As</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的信号连接图如图</span><span lang="EN-US"> 3</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">所示。由图中可以看到</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">在那些互相连接的信号线之间都隔着一些写着“</span><span lang="EN-US">S N74ALVC164245</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">”</span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">的芯片</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">那是因为</span><span lang="EN-US"> S3C2410</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的</span><span lang="EN-US">I/O</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">引脚的工作电压是</span><span lang="EN-US"> 313 V</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的</span><span lang="EN-US"> (</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">按道理可以承受</span><span lang="EN-US"> 5V</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">电压</span> <span lang="EN-US">) ,</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">而</span><span lang="EN-US"> MCX314As</span><span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">的工作电压是</span><span lang="EN-US"> 5V,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">为保险起见</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">同时也为了增加信号之间传输的可靠性</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">我们在两者信号连接时加入了“</span><span lang="EN-US">S N74ALVC164245</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">”</span> <span style="font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">的芯片来实现电平的转换</span><span lang="EN-US"> ,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">同时驱动信号</span><span lang="EN-US">[ 4 ]</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a href='/index.php?case=tag&act=show&tag=%E7%B3%BB%E7%BB%9F' target='_blank'>系统</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> <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=201"></script> <!-- 自定义表单开始 --> <!-- 自定义表单结束 --> <div class="blank60"></div> <!-- 上下页开始 --> <div id="page"> <strong>上一篇</strong><a href="/bethel/news/show_200.html">嵌入式数控系统的硬件结构及设计与调试(二)</a> <div 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