R/D conversion method and R/D converter
AssigneeTamagawa Seiki Kabushiki Kaisha
InventorsHiroshi Kushihara, Hirofumi Maruyama, Ryohei Ushikusa, Shinichi Arai
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Abstract
An R/D conversion method includes a step of removing a frequency band including a frequency component that is twice an excitation frequency of excitation signals of a resolver (30) from a digital angle value (φ). The R/D conversion method further includes a step of outputting, by the resolver (30), the resolver signals having a phase difference that corresponds to an angle of the resolver with respect to the excitation signals, respectively, and a step of feeding back the digital angle value (φ) includes feeding back the digital angle value (φ) to the resolver signals.
Claims8
An resolver digital conversion method of converting resolver signals of a resolver of any one of a two-phase excitation/two-phase output type, a one-phase excitation/two-phase output type, or a two-phase excitation/one-phase output type into a digital angle value,
- the R/D conversion method comprising a step of removing a frequency band including a frequency component that is twice an excitation frequency of excitation signals of the resolver from the digital angle value.
An R/D converter for converting resolver signals of a resolver of any one of a two-phase excitation/two-phase output type, a one-phase excitation/two-phase output type, or a two-phase excitation/one-phase output type into a digital angle value,
- the R/D converter comprising a filter configured to remove a frequency band including a frequency component that is twice an excitation frequency of excitation signals of the resolver from the digital angle value.
Dependencies are inferred from the claim text.