US 12,278,587 B2
Complex baseband rotary resolver
Ryan W. Hinton, Erda, UT (US); Daniel G. Chilinski, Layton, UT (US); and Kristian J. Harris, West Jordan, UT (US)
Assigned to L3HARRIS TECHNOLOGIES, INC., Melbourne, FL (US)
Filed by L3Harris Technologies, Inc., Melbourne, FL (US)
Filed on Aug. 30, 2022, as Appl. No. 17/899,295.
Prior Publication US 2024/0072694 A1, Feb. 29, 2024
Int. Cl. G01D 3/02 (2006.01); H02P 6/18 (2016.01)
CPC H02P 6/183 (2013.01) 23 Claims
OG exemplary drawing
 
1. In a rotating machine environment, a method of monitoring rotor position with respect to a stator using a resolver having an input primary and one or more output secondaries magnetically coupled to the input primary, the method comprising:
exciting the input primary with an exciter input signal, causing a first scaled version of the exciter input signal to appear in a first output secondary;
collecting a first signal output from the first output secondary; and
demodulating the first signal output collected from the first output secondary to create a first complex baseband signal based on phase information about the exciter input signal and phase errors estimated based on the first complex baseband signal.