140DDM39000 Quantum電機控制要求了解電機進行整流轉向的轉子位置和機制。對于閉環(huán)速度控制，有兩個附加要求，即對于轉子速度/或電機電流以及PWM信號進行測量，以控制電機速度功率。

電機可以根據應用要求采用邊排列或中心排列PWM信號。大多數應用僅要求速度變化操作，將采用6個獨立的邊排列PWM信號。這就提供了高的分辨率。如果應用要求服務器定位、能耗制動或動力倒轉，推薦使用補充的中心排列PWM信號。

為了感應轉子位置，BLDC電機采用霍爾效應傳感器來提供定位感應。這就導致了更多線的使用和更高的成本。無傳感器BLDC控制省去了對于霍爾傳感器的需要，而是采用電機的反電動勢(電動勢)來預測轉子位置。無傳感器控制對于像風扇和泵這樣的低成本變速應用至關重要。在采有BLDC電機時，冰箱和空調壓縮機也需要無傳感器控制。

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