MVI56-BAS
MVI56-BAS
使用 AMT 容式編碼器幾乎能實現瞬時對齊,且只需要一個電源。安裝編碼器后,用戶只需向對應于 AMT 編碼器所需起始位置的那兩相供電,并發出對齊命令。這樣做,用戶就從根本上設定了編碼器的換向波形和電機反電動勢波形的起始位置。
除了易于對齊之外,AMT 編碼器的換向信號與電機磁極的對齊也更加。將換向編碼器對齊電機,只是設置了起始位置(即換向波形的起始位置)。如果操作適當,換向波形應與電機的反電動勢波形完全匹配。然而,這總情況并不是總能實現的。使用霍爾傳感器或光學編碼器的典型對齊范圍是在 ±1 電度。另一方面,AMT 編碼器可達到更高的精度,通常在 ±0.1 電度以內。AMT 編碼器的波形從 U 和 W 都是高電平時開始(上述波形中的第三個狀態);請咨詢電機制造商,了解相應的反電動勢圖,以確定在對齊過程中哪些相應該通電。
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