PROBLEM TO BE SOLVED: To provide an electric power steering device capable of suppressing excessive power consumption.SOLUTION: An electric power steering device comprises: maximum motor torque calculation means (33) for calculating a maximum motor torque which can be generated by an electric motor, the maximum motor torque corresponding to a current input voltage and a motor rotation number; and means (33) for, when a switching circuit (43) is in a first power supply state, if a difference between them obtained by subtracting an actual motor torque from the maximum motor torque becomes less than a first prescribed value α(α>0), switching the state of the switching circuit to a second power supply state, and in a state in which the switching circuit is in the second power supply state, if the difference becomes a second prescribed value β(β>0) or more, switching the state of the switching circuit to the first power supply state.SELECTED DRAWING: Figure 2
【課題】、無駄な電力の消費を抑制することができる電動パワーステアリング装置を提供する。【解決手段】電動モータによって発生させることができる最大モータトルクであって、現在の入力電圧およびモータ回転数に応じた最大モータトルクを演算する最大モータトルク演算手段(33)と、切替回路(43)が第1電力供給状態である場合において、最大モータトルクから実モータトルクを減算することにより得られる両者の差が第1所定値α(α>0)未満になれば、切替回路を第2電力供給状態に切り替え、切替回路が第2電力供給状態である場合において、差が第2所定値β(β>0)以上になれば、切替回路を第1電力供給状態に切り替える手段(33)とを含む。【選択図】図2
ELECTRIC POWER STEERING DEVICE AND POWER SUPPLY STATE SWITCHING METHOD
電動パワーステアリング装置および電力供給状態切替方法
2017-09-21
Patent
Elektronische Ressource
Japanisch
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