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    	<div class="nyNewsDetail_Title"><h1>转速表的原理和分类</h1></div>
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            <span><img src="/skins/158899/images/date01.png" />更新时间：2018-03-05</span><span><img src="/skins/158899/images/hit.png" />点击次数：3023</span>
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            <p style="text-align:center"><strong><span style="font-family:宋体"><span style="font-size:15.0pt">转速表的原理和分类</span></span></strong></p><p><strong><span style="font-family:宋体"><span style="font-size:12pt">转速表的原理</span></span></strong></p><p><span style="color:#666666"><span style="font-family:simsun,serif"><span style="font-size:9.0pt"><span style="color:black"><span style="font-family:宋体"><span style="font-size:10.5pt">转速表</span></span></span></span></span></span><span style="font-family:宋体">是机械行业*的仪器之一，用来测定电机的转速、线速度或频率。常用于电机、电扇、造纸等制造业。大多常用的为手持离心式转速表。转速仪测量在国民经济的各个领域中，是*的。转速表将接收的数字脉冲信号（由传感器发出的），处理后直接读入cpu的计数口，经软件计算出转速、和指针相应的位置，再通过cpu的控制口，放大后驱动步进电机正负方向旋转，指示相应转速值（指针直接安装在步进电机的旋转轴上），步进电机走一步仅为1/3度。</span></p><p><span style="font-family:宋体">1</span><span style="font-family:宋体">、静力矩大指针不易抖动，抗振性能强。&nbsp;　　</span></p><p><span style="font-family:宋体">2</span><span style="font-family:宋体">、采用单片微处理器通过软件设计，所以精度高、抗干扰性强。&nbsp;　　</span></p><p><span style="font-family:宋体">3</span><span style="font-family:宋体">、小时计采用液晶显示，无机械部分，所以更可靠和更具有时代感。&nbsp;　　</span></p><p><span style="font-family:宋体">由于是指针指示符合传统视认习惯，又便于计算机远程处理和网络化要求，所以数字化步进电机仪表是现代汽车仪表和摩托车仪表的发展趋势，Switec公司的步进电机在国内外已广泛用于各种汽车、摩托车和工程机械仪表。车用微型步进电机是一种的新型汽车仪表配件，利用它设计的仪表既符合传统视认习惯又能满足数化处理要求，是现代化仪表的理想配件。</span></p><p><span style="font-family:simsun,serif"><span style="font-size:9pt"><span style="color:black"><span style="font-family:宋体"><span style="font-size:10.5pt">转速表</span></span></span></span></span><span style="font-family:宋体">的分类就不一一列举出来了，列出以下三种：</span><br />&nbsp;</p><p><strong><span style="font-family:宋体">离心式转速仪</span></strong></p><p><span style="font-family:宋体">离心式<span style="color:#4D4D4D">转速仪</span>利用离心力与拉力的平衡来指示转速。&nbsp;离心式转速仪是zui传统的转速测量工具，是利&nbsp;用离心力原理的机械式转速仪；测量精度一般在1~2级，一般就地安装。一只优良的离心式转速仪不但有&nbsp;准确直观的特点，还具备可靠耐用的优点。但是结构比较复杂&nbsp;。</span></p><p>&nbsp;</p><p><strong><span style="font-family:宋体">磁性转速仪</span></strong></p><p><span style="font-family:宋体">磁性转速仪利用旋转磁场，在金属罩帽上产生旋转力，利用旋转力与游丝力的平衡来指示转速。&nbsp;磁&nbsp;性转速表，是成功利用磁力的一个*，是利用磁力原理的机械式转速仪；一般就地安装，用软轴可以短距离异地安装。磁性转速仪，因结构较简单，目前较普遍用于摩托车和汽车以及其它机械设备。异地安装时软轴易损坏。</span></p><p style="text-align:center">&nbsp;</p><p><strong><span style="font-family:宋体">电动式转速仪</span></strong></p><p><span style="font-family:宋体">转速表电动式转速仪由小型交流发电机、电缆、电动机和磁性表头组成。小型交流发电机产生交流电，交流电通过电缆输送驱动小型交流电动机，小型交流电动机的转速与被测轴的转速一致。磁性转速头与小型交流电动机同轴连接在一起，磁性表头指示的转速自然就是被测轴的转速；电动式转速，异地安装非常方便，抗振性能好，广泛运用于柴油机和船舶设备。</span></p> 
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