ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,948, issued on Nov. 4, was assigned to Hamilton Sundstrand Corp. (Charlotte, N.C.).
"Resolver quadrant detection" was invented by Muhammed Shihab (Ernakulam, India) and Shardul Bapat (Bangalore, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes first precision rectifier operatively connected to receive high and low signals of a sine coil of a resolver and to output a first signaled condition and an exciter coil of the resolver. A second precision rectifier is operatively connected to receive high and low signals of a cosine coil of the resolver and to output a second signaled condition. A quadrant detection circuit operatively co...