Input/Output Device And Steering Measurement Device

Abstract: An input/output device (3) comprises: an identification signal command unit (4) that outputs, to an electric power steering device (50) which adds auxiliary steering force to a steering provided to a vehicle, an identification signal for identifying a parameter of the electric power steering device or a command signal for instructing the electric power steering device to start outputting the identification signal; and a parameter identification unit (5) that identifies the parameter of the electric power steering device from a response of the electric power steering device to the identification signal, wherein the parameter identification unit identifies the parameter of the electric power steering device on the basis of responses to a first identification signal and a second identification signal which are output when the steering is in a prescribed rotation state, wherein the first identification signal is for identifying a linear parameter and the second identification signal is for identifying a non-linear parameter.

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