MPL-B310P-MJ72AH

 MPL-B310P-MJ72AH MPL-B310P-MJ72AH现货

Allen-Bradley全新原装，大量到货。
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陕西欣鸿然自动化设备有限公司
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1、精度：实现了位置，速度和力矩的闭环控制；克服了步进电机失步的问题；
2、转速：高速性能好，一般额定转速能达到2000～3000转；
3、适应性：抗过载能力强，能承受三倍于额定转矩的负载，对有瞬间负载波动和要求快速起动的场合特别适用；
4、稳定：低速运行平稳，低速运行时不会产生类似于步进电机的步进运行现象。适用于有高速响应要求的场合；
5、及时性：电机加减速的动态相应时间短，一般在几十毫秒之内；
6、舒适性：发热和噪音明显降低。

1、伺服系统（servo mechanism）是使物体的位置、方位、状态等输出被控量能够跟随输入目标（或给定值）的任意变化的自动控制系统。伺服主要靠脉冲来定位，基本上可以这样理解，伺服电机接收到1个脉冲，就会旋转1个脉冲对应的角度，从而实现位移，因为，伺服电机本身具备发出脉冲的功能，所以伺服电机每旋转一个角度，都会发出对应数量的脉冲，这样，和伺服电机接受的脉冲形成了呼应，或者叫闭环，如此一来，系统就会知道发了多少脉冲给伺服电机，同时又收了多少脉冲回来，这样，就能够很精确的控制电机的转动，从而实现精确的定位，可以达到0.001mm。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，但维护不方便（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。
2、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。
3、伺服电机内部的转子是永磁铁，驱动器控制的U/V/W三相电形成电磁场，转子在此磁场的作用下转动，同时电机自带的编码器反馈信号给驱动器，驱动器根据反馈值与目标值进行比较，调整转子转动的角度。伺服电机的精度决定于编码器的精度（线数）。
交流伺服电机和无刷直流伺服电机在功能上的区别：交流伺服要好一些，因为是正弦波控制，转矩脉动小。直流伺服是梯形波。但直流伺服比较简单，便宜。

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