Method of detecting abnormality of R/D converter
AssigneeTamagawa Seiki Kabushiki Kaisha
InventorHiroshi Kushihara
Life of this patent
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Abstract
To achieve miniaturization of a resolver apparatus as a system, to obtain the resolver apparatus at a low cost, and to improve failsafe by installing an abnormality detection unit and a self-diagnosis circuit within the R/D converter. According to the present invention, an abnormality detecting method for an R/D converter in a resolver apparatus includes detecting abnormalities of at least the resolver itself (1), a cable wiring (2) through which the resolver (1) and the R/D converter (3) are connected to each other, and the R/D converter (3) itself by an abnormality detection unit (4) provided in the R/D converter (3).
Claims9
An abnormality detecting method for an R/D converter in a resolver apparatus comprising a resolver for outputting a resolver signal in the form of two-phase sine wave signals as an analog signal obtained by amplitude-modulating a signal of an input rotation angle using an excitation component, and an R/D converter for receiving as its input the resolver signal to convert the resolver signal into a digital angle output, the method comprising:
- detecting abnormalities of at least the resolver itself, a cable wiring through which the resolver and the R/D converter are connected to each other, and the R/D converter itself with an abnormality detection unit provided in the R/D converter.
Dependencies are inferred from the claim text.