JZRCR-YPP01-1示教器

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安川dx100机器人示教器 JZRCR-YPP01-1

报价单位：厦门航拓电气有限公司
联系人：戴先生
手机：18006003561（微信同号）
座机：0592-5072089
QQ：565167042



伺服电机与步进电机的性能比较



1、矩频特性不同
 
步进电机的输出力矩随转速升高而下降，且在较高转速时会急剧下降，

所以其.高工作转速一般在300～600RPM。交流伺服电机为恒力矩输出，

即在其额定转速（一般为2000RPM或3000RPM）以内，都能输出额定转矩，

在额定转速以上为恒功率输出。
 
2、过载能力不同
 
步进电机一般不具有过载能力。交流伺服电机具有较强的过载能力。

以三洋交流伺服系统为例，它具有速度过载和转矩过载能力。

其.大转矩为额定转矩的二到三倍，可用于克服惯性负载在启动瞬间的惯性力矩。

步进电机因为没有这种过载能力，在选型时为了克服这种惯性力矩，

往往需要选取较大转矩的电机，

而机器在正常工作期间又不需要那么大的转矩，便出现了力矩浪费的现象。
 
3、运行性能不同
 
步进电机的控制为开环控制，启动频率过高或负载过大易出现丢步或堵转的现象，

停止时转速过高易出现过冲的现象，所以为保证其控制精度，应处理好升、降速问题。

交流伺服驱动系统为闭环控制，驱动器可直接对电机编码器反馈信号进行采样，

内部构成位置环和速度环，一般不会出现步进电机的丢步或过冲的现象，控制性能更为可靠。
 
4、速度响应性能不同
 
步进电机从静止加速到工作转速（一般为每分钟几百转）需要200～400毫秒。

交流伺服系统的加速性能较好，以山洋400W交流伺服电机为例，

从静止加速到其额定转速3000RPM仅需几毫秒，可用于要求快速启停的控制场合。
 
综上所述，交流伺服系统在许多性能方面都优于步进电机。

但在一些要求不高的场合也经常用步进电机来做执行电动机。

所以，在控制系统的设计过程中要综合考虑控制要求、成本等多方面的因素，选用适当的控制电机。





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