MH201N2KA13
MH201N2KA13
MH201N2KA13
厦门伊诗图电气是Sankyo的一级代理商,是您不二的选择
伊诗图电气销售部
三协伺服电机广泛应用于对精度要求有较高要求的机械设备,如印刷设备、机床、和CNC数控设备、装配线和材料夹持自动生产、印刷设备、打浆成纸及网面处理和自动机载系统包装设备、纺织设备、激光加工设备、机器人、自动化生产线等对工艺精度、加工效率和工作可靠性等要求相对较高的设备。
1.交流伺服电动机的特点
(1)起动转矩大;
(2)运行范围较广;
(3)无自转现象。
2.与步进电机的比较
(1)控制精度更高;
(2)低频特性好,即使在低速时也不会出现振动现象;
(3)矩频特性不同,即在其额定转速(一般为2000r/min或3000r/min)以内,都能输出额定转矩,在额定转速以上为恒功率输出;
(4)具有较强的速度过载和转矩过载能力,转矩为额定转矩的2~3倍;
(5)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,控制性能更为可靠;
(6)交流伺服系统的加速性能较好,从静止加速到其额定转速3000r/min仅需数ms,可用于要求快速启停的控制场合。
伺服电机工作原理: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。
交流伺服电动机定子的构造基本上与电容分相式单相异步电动机相似.其定子上装有两个位置互差90°的绕组,一个是励磁绕组Rf,它始终接在交流电压Uf上;另一个是控制绕组L,联接控制信号电压Uc。所以交流伺服电动机又称两个伺服电动机。
交流伺服电动机在没有控制电压时,定子内只有励磁绕组产生的脉动磁场,转子静止不动。当有控制电压时,定子内便产生一个旋转磁场,转子沿旋转磁场的方向旋转,在负载恒定的情况下,电动机的转速随控制电压的大小而变化,当控制电压的相位相反时,伺服电动机将反转。
交流伺服电动机的工作原理与分相式单相异步电动机虽然相似,但前者的转子电阻比后者大得多,所以伺服电动机与单机异步电动机相比,有起动转矩大 、运行范围较广、无自转现象三个显著特点。
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