公开(公告)号：US09715478B2

公开(公告)日：2017-07-25

申请号：US13741661

申请日：2013-01-15

申请人： ABB Oy

发明人： Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola ,  Markku Niemelä

IPC分类号： G06F17/00 ,  F04D15/00 ,  F04D27/00

CPC分类号： G06F17/00 ,  F04D15/0088 ,  F04D27/001

摘要： A method is provided for detecting the correct rotational direction of a centrifugal apparatus. The method includes rotating the centrifugal apparatus in a first direction, acquiring first frequency data relating to the step of rotating the centrifugal apparatus in the first direction, rotating the centrifugal apparatus in a second direction, which is opposite to the first direction, and acquiring second frequency data relating to the step of rotating the centrifugal apparatus in the second direction. The method also includes detecting the correct rotational direction of the centrifugal apparatus based on comparing the first frequency data with the second frequency data, the comparison being carried out with respect to at least one significant frequency range. In each of the at least one significant frequency range, a smaller magnitude is interpreted as an indication of the correct rotational direction.