To provide a technology allowing a normal operation of a torque sensor to be determined even when the number of torque sensors is one.SOLUTION: A failure detection device includes: a failure diagnosis unit for detecting a failure of a torque detection device 200 for detecting a torque applied to a pinion shaft using a plurality of torque sensors; and a target current calculation unit 20. When the failure diagnosis unit has detected a failure of the torque detection device 200, and when at least one of the plurality of torque sensors 203 is normal, the target current calculation unit controls the driving of an electric motor 110 so as to output a continuous torque, namely to continuously generate a torque detectable by the torque sensor 203.SELECTED DRAWING: Figure 2
【課題】トルクセンサが一つである場合においても、このトルクセンサが正常動作していることを判断できる技術を提供する。【解決手段】ピニオンシャフトに印加されたトルクを複数のトルクセンサにて検出するトルク検出装置200の故障を検出する故障診断部と、故障診断部がトルク検出装置200の故障を検出した場合に、複数のトルクセンサ203の少なくとも1つが正常である場合にトルクセンサ203にて検出可能なトルクを連続的に発生させる連続トルクを出力するように電動モータ110の駆動を制御する目標電流算出部20と、を備える。【選択図】図2
FAILURE DETECTION DEVICE, ELECTRIC POWER STEERING DEVICE
故障検出装置、電動パワーステアリング装置
2018-12-20
Patent
Electronic Resource
Japanese
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