Patent ID: 9715478
Date: 2017-07-25
CPC Classifications: F04D,G06F

Claim:
1. A method for detecting the correct rotational direction of a centrifugal apparatus, the method comprising: 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, the second direction being opposite to the first direction; acquiring second frequency data relating to the step of rotating the centrifugal apparatus in the second direction, wherein essential parameters of the step of rotating the centrifugal apparatus in the second direction are compatible with essential parameters of the step of rotating the centrifugal apparatus in the first direction, and essential parameters of the step of acquiring second frequency data are compatible with essential parameters of the step of acquiring first frequency data; detecting a 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 frequency range; and controlling the centrifugal apparatus to rotate in the detected correct rotational direction of the centrifugal apparatus, wherein in each of the at least one frequency range a smaller magnitude is interpreted as an indication of the correct rotational direction.