140CRA21220C
140CRA21220C
140CRA21220C
1、伺服系统控制电机速度靠速度环；
2、电机的速度，直流电机决定电压的高低，交流电机决定频率的高低；
3、所以速度环的调节器输出端控制的是交流电机的频率，或者是控制着直流电机的电压；
4、速度环是如何检测电机速度的？应该说速度的检测靠编码器；
5、因为 编码器的反馈脉冲频率=编码器的解析度×电机速度
所以电机的速度与编码器反馈脉冲频率成正比！
6、也就是说，速度环检测反馈的是编码器脉冲的频率；
7、那么要给定电机速度，必须给定编码器脉冲的频率；
8、只要给定编码器脉冲的频率，就给定了电机的速度；
9、在操作面板上没有编码器反馈脉冲频率的设置，只有指令脉冲频率的设置，就是楼主说的S1；
10、因为 电子齿轮比=编码器解析度/周指令脉冲数，
所以 周指令脉冲数=编码器解析度/电子齿轮比
所以 周指令脉冲数×电机速度=编码器解析度×电机速度/电子齿轮比
又因为 周指令脉冲数×电机速度=指令脉冲频率、编码器解析度×电机速度=编码器脉冲频率
所以 指令脉冲频率=编码器脉冲频率/电子齿轮比
所以设定指令脉冲频率，就是设定编码器脉冲频率，就是在速度环设定电机速度
◆ 企业名称：厦门泰尼电气有限公司
◆ 主营业务：DCS,PLC
◆ 经营模式： 贸易
◆ 贸易地区：
◆ 联系人： 小黄《女士》
◆ 电话：
◆手机：
◆ QQ:2917675397
◆ 传真： （备注“01006”收）
◆ E-mail： 2917675397@qq.com
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