Abstract: A magnetic position sensing system includes at least one annular magnet mounted to a surface of a rotating body. The annular magnet includes a first end, a second end, an inner diameter surface, and an outer diameter surface. The inner diameter surface and outer diameter surface define a radial thickness therebetween, and the radial thickness varies from the first end to the second end.

Abstract: Embodiments herein relate to a position sensor and method for measuring the rotation of a rotary shaft. The position sensor includes a rotary shaft having a cavity at an axial end thereof, a permanent magnet array where the permanent magnet array disposed at a circumference of the cavity, and a first Hall Effect sensor configured to detect a magnetic field produced by the permanent magnet array in a first radial axis.

Abstract: An illustrative example embodiment of a method of making a rotary magnetic drive member includes establishing a helical magnet on a rod using an additive manufacturing process.