ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,454, issued on March 17, was assigned to Waymo LLC (Mountain View, Calif.).
"Method of determining runout" was invented by Morgan McMahon (Mountain View, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining runout error includes generating a first magnetic field to interact with a second magnetic field generated by four or more poles of a magnet ring mounted to a first platform. The interaction may cause the first platform to rotate relative to a second platform. The method may further include receiving, from a magnetic field sensor, data including respective boundaries between neighboring poles of the four or more poles r...