Patent ID: 8032325

Claim:
A method of determining the radial position of a rotor relative to a stator, comprising the steps of: measuring, by a first sensor, a first voltage linked to a position of a detection track relative to said first sensor; measuring, by a second sensor, a second voltage linked to the position of the detection track relative to said second sensor; measuring, by a third sensor, a third voltage linked to the position of the detection track relative to said third sensor; measuring, by a fourth sensor, a fourth voltage linked to the position of the detection track relative to said fourth sensor; calculating V 3 +V 4 −V 1 −V 2 to determine the position of the detection track relative to the first actuation axis; calculating V 1 +V 4 −V 2 −V 3 to determine the position of the detection track relative to the second actuation axis, wherein: V 1 is the first voltage; V 2 is the second voltage; V 3 is the third voltage; V 4 is the fourth voltage; and the position of the detection track relative to the first and second actuation axes is an indication of the radial position of the rotor relative to the stator.