Diagnostic Device of RD Converter, Steering System, and Power Train System

摘要

To diagnose whether a diagnostic function inside an RD converter is normally operated with a simple configuration even if abnormality occurs in the RD converter itself.;A diagnostic device of an RD converter diagnostic unit according to the present invention generates and inputs a resolver output that is in an error state to an RD converter, and determines that the diagnostic unit is normally operated if a diagnosis result of the RD converter indicates an abnormal state.

主权项

1. A diagnostic device of an RD converter diagnostic unit configured to diagnose whether a diagnostic unit is normally operated, the diagnostic unit diagnosing an RD converter, the RD converter calculating a detection angle using two output signals of a resolver, the two output signals periodically changing and having different phases, and the resolver expressing the detection angle by the two output signals, the diagnostic device comprising:
an error state signal generation unit configured to generate the output signals that have become in an error state as error state signals, separately from the output signals; a fault injection unit configured to switch whether either the output signals or the error state signals is input to the RD converter; and an RD converter diagnostic function diagnostic unit configured to receive a diagnosis result of whether the RD converter is normally operated from the diagnostic unit, and to diagnose whether the diagnostic unit is normally operated based on the diagnosis result, wherein the RD converter diagnostic function diagnostic unit
determines that the diagnostic unit is normally operated when the fault injection unit inputs the error state signals to the RD converter, and the diagnosis result indicates that the RD converter is abnormally operated, anddetermines that the diagnostic unit is abnormally operated when the fault injection unit inputs the error state signals to the RD converter, and the diagnosis result indicates that the RD converter is normally operated.