BENTLY NEVADA 卡件3500/20 INTERFACE MODULE 3500/20-01-02-00
BENTLY NEVADA 卡件3500/20 INTERFACE MODULE 3500/20-01-02-00
BENTLY NEVADA 卡件3500/20 INTERFACE MODULE 3500/20-01-02-00
工业机器人电动伺服系统的一般结构为三个闭环控制，即电流环、速度环和位置环。一般情况下，对于交流伺服驱动器，可通过对其内部功能参数进行人工设定而实现位置控制、速度控制、转矩控制等多种功能。
那么关于伺服电机有哪些需要知道的呢?下面小编总结了伺服电机的十个你可能不知道问题，一起来看一下吧。
1.如何正确选择伺服电机和步进电机?
答：主要视具体应用情况而定，简单地说要确定：负载的性质(如水平还是垂直负载等)，转矩、惯量、转速、精度、加减速等要求，上位控制要求(如对端口界面和通讯方面的要求)，主要控制方式是位置、转矩还是速度方式。供电电源是直流还是交流电源，或电池供电，电压范围。据此以确定电机和配用驱动器或控制器的型号。
2.选择步进电机还是伺服电机系统?
答：其实，选择什么样的电机应根据具体应用情况而定，各有其特点。
3.如何配用步进电机驱动器?
答：根据电机的电流，配用大于或等于此电流的驱动器。如果需要低振动或高精度时，可配用细分型驱动器。对于大转矩电机，尽可能用高电压型驱动器，以获得良好的高速性能。
4.2 相和5 相步进电机有何区别，如何选择?
答：2 相电机成本低，但在低速时的震动较大，高速时的力矩下降快。 5 相电机则振动较小，高速性能好，比 2 相电机的速度高30~50% ，可在部分场合取代伺服电机。
5.何时选用直流伺服系统，它和交流伺服有何区别?
答：直流伺服电机分为有刷和无刷电机。
有刷电机成本低，结构简单，启动转矩大，调速范围宽，控制容易，需要维护，但维护方便(换碳刷)，产生电磁干扰，对环境有要求。因此它可以用于对成本敏感的普通工业和民用场合。
无刷电机体积小，重量轻，出力大，响应快，速度高，惯量小，转动平滑，力矩稳定。控制复杂，容易实现智能化，其电子换相方式灵活，可以方波换相或正弦波换相。电机免维护，效率很高，运行温度低，电磁辐射很小，长寿命，可用于各种环境。
交流伺服电机也是无刷电机，分为同步和异步电机，目前运动控制中一般都用同步电机，它的功率范围大，可以做到很大的功率。大惯量，转动速度低，且随着功率增大而快速降低。因而适合做低速平稳运行的应用。
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