| 摘要 |
PROBLEM TO BE SOLVED: To keep detection accuracy of an object rotation angle high, even when two resolvers are arranged close, concerning a redundancy type rotation angle detection device. SOLUTION: In the redundancy type rotation angle detection device for exciting two resolvers by two excitation means mutually asynchronously, and operating each object rotation angle based on results acquired by sampling each excited resolver output in a prescribed sampling period, each excitation frequency of each resolver by the two excitation means and a sampling frequency for sampling the resolver output are set so that a difference between both excitation frequencies becomes an integer-fold value of the sampling frequency, and output sampling of each resolver excited by the two excitation means is performed at a peak timing of an output amplitude. COPYRIGHT: (C)2009,JPO&INPIT
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