AECO传感器SC30SM-CE25 PNP NO+NC H
当步进电机作业在低速时，一般应选用阻尼技术来战胜低频振动现象，比如在电机上加阻尼器，或驱动器上选用细分技术等。交流伺服电机工作非常平稳，即便在低速时也不会出现振动现象。交流伺服系统具有共振按捺功用，可涵盖机械的刚性缺少，并且系统内部具有频率解析机能(FFT)，可检测出机械的共振点。
便于系统调整。如何选择步进电机和伺服电机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，所以其高作业转速一般在300～600RPM。交流伺服电机为恒力矩输出，即在其额外转速(一般为2000RPM或3000RPM)以内，都能输出额外转矩，在额外转速以上为恒功率输出。
过载才干不同电机一般不具有过载才干。交流伺服电机具有较强的过载才干。以松下交流伺服系统为例，它具有速度过载和转矩过载才干。其最大转矩为额外转矩的三倍，可用于战胜惯性负载在发起瞬间的惯性力矩。步进电机由于没有这种过载才干，在选型时为了战胜这种惯性力矩，往往需求选取较大转矩的电机。
而机器在正常作业期间又不需求那么大的转矩，便出现了力矩糟蹋的现象。运行功用不同电机的控制为开环控制，发起频率过高或负载过大易出现丢步或堵转的现象，中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，控制功用更为牢靠。速度呼应功用不同电机从静止加快到作业转速(一般为每分钟几百转)需求200～400毫秒。交流伺服系统的加快功用较好，以松下MSMA400W交流伺服电机为例，从静止加快到其额外转速3000RPM仅需几毫秒。
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