Diagnostic device for current sensor
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShuichi IWATA, Yuki JOJIMA
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Abstract
A diagnostic device for a current sensor disclosed herein may include an AC power calculation unit, a DC power calculation unit, and a determination unit. The AC power calculation unit may be configured to calculate AC power outputted from the inverter based on a measurement value measured by the current sensor. The DC power calculation unit may be configured to calculate DC power outputted from a DC power source that supplies power to the inverter. The determination unit may be configured to output a signal for notifying occurrence of an abnormality of the current sensor in a case where a difference between the calculated AC power and the calculated DC power is larger than a predetermined threshold.
Claims4
A diagnostic device for a current sensor for measuring current flowing between an inverter and an AC motor, the diagnostic device comprising:
- an AC power calculation unit configured to calculate AC power outputted from the inverter based on a measurement value measured by the current sensor;
- a DC power calculation unit configured to calculate DC power outputted from a DC power source that supplies power to the inverter;
- and
- a determination unit configured to output a signal for notifying an abnormality of the current sensor in a case where a difference between the calculated AC power and the calculated DC power is larger than a predetermined threshold.
Dependencies are inferred from the claim text.