| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fixed signal extending over the entire angle range, and to detect faults precisely, by obtaining the sum of squares of bi-phase resolver signals and setting it as a sum-of-squares signal. SOLUTION: In a fault detection method of the resolver signals, by obtaining a sine signal (1) and a cosine signal (2) are converted into direct currents and squared and the sum, the sum of the squares of the output sin<SP>2</SP>+cos<SP>2</SP>is obtained. Since the level is constant over the entire angle range, faults can be detected with high accuracy by processing, using a window-type comparator. COPYRIGHT: (C)2006,JPO&NCIPI
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