Patent ID: 9182455
Filing Date: 2015-11-10
Classification: G01B,G01R

Abstract:
1. A method for measuring the magnetic flux and run out of a surface, comprising the steps of: providing a digital linear actuator (DLA); providing a rotor, the rotor being part of the DLA; providing a magnet connected to and circumscribing the rotor, the magnet having an outer surface; providing a plot having the magnet flux density of the magnet, and the run out of the magnet; providing a first section of the outer surface wherein the first section to be a first central median bisecting plane located on the outer surface of the rotor; providing a second section of the outer surface, the second section to be a second central median bisecting plane located on the outer surface of the rotor, wherein the second section to be at the opposite end of the magnet as the first section; providing a non-contact measurement sensor for measuring the run out on the first section of the outer surface of the magnet, and for measuring the run out on the second section of the outer surface of the magnet; providing a gauss probe for measuring the magnet flux density generated in proximity to the first section of the outer surface of the magnet, and for measuring the magnet flux density generated in the second section of the outer surface of the magnet; simultaneously measuring the run out and the magnet flux density of the rotor; plotting the run out and the magnet flux density are together on the plot to correlate the measurements of the run out and the magnet flux density; measuring the magnet flux density in the first section and in the second section using the gauss probe; measuring the run out in the first section and in the second section using the non-contact measurement sensor; plotting the magnet flux density measured in the first section and in the second section on the plot; and plotting the run out measured in the first section and the second section on the plot.