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MVI56-BAS
MVI56-BAS
使用 AMT 容式编码器几乎能实现瞬时对齐,且只需要一个电源。安装编码器后,用户只需向对应于 AMT 编码器所需起始位置的那两相供电,并发出对齐命令。这样做,用户就从根本上设定了编码器的换向波形和电机反电动势波形的起始位置。
除了易于对齐之外,AMT 编码器的换向信号与电机磁极的对齐也更加。将换向编码器对齐电机,只是设置了起始位置(即换向波形的起始位置)。如果操作适当,换向波形应与电机的反电动势波形完全匹配。然而,这总情况并不是总能实现的。使用霍尔传感器或光学编码器的典型对齐范围是在 ±1 电度。另一方面,AMT 编码器可达到更高的精度,通常在 ±0.1 电度以内。AMT 编码器的波形从 U 和 W 都是高电平时开始(上述波形中的第三个状态);请咨询电机制造商,了解相应的反电动势图,以确定在对齐过程中哪些相应该通电。
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