JP7131144B2 - 車両の駆動システムに適用される駆動制御装置 - Google Patents
車両の駆動システムに適用される駆動制御装置 Download PDFInfo
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Description
図1に、本実施形態に係る車両20の駆動システム10を示す。駆動システム10は、電気自動車(EV車)である車両20に搭載され、車両20の駆動軸21、22を駆動することができる。駆動システム10は、バッテリ11と、駆動用の発電電動機(モータジェネレータ:MG)であるMG12,13と、インバータ14,15と、コンバータ16と、ECU40とを備えている。
Sn[%]=(VR-VC)/max(VC,VR,a) …(1)
T=kB×TB+kM×TM …(2)
T1=kB×TB1+kM×TM1 …(3)
T2=kB×TB2+kM×TM2 …(4)
第2実施形態に係る駆動制御処理のフローチャートを図5に示す。図5に示すステップS201~S204に係る処理は、図3に示すステップS101~S104と同様であるため、100番台の番号を200番台に読み替えることにより説明を省略する。
第3実施形態に係る駆動制御処理のフローチャートを図6に示す。図6に示すステップS301~S304に係る処理は、図3に示すステップS101~S104と同様であるため、100番台の番号を300番台に読み替えることにより説明を省略する。また、ステップS306,307に係る処理は、それぞれ、図3に示すステップS105、S106と同様であるため、説明を省略する。
第4実施形態に係る駆動制御処理のフローチャートを図7に示す。図7に示すステップS401~S404に係る処理は、図3に示すステップS101~S104と同様であるため、100番台の番号を400番台に読み替えることにより説明を省略する。
第5実施形態に係る駆動制御処理のフローチャートを図8に示す。
図9に、本実施形態に係る車両120の駆動システム110を示す。駆動システム110は、ハイブリッド車(HEV車)である車両120に搭載され、内燃機関18をさらに備えている点において、図1に示す駆動システム10と相違している。内燃機関18はエンジンであり、第2MG13とともに、第2駆動軸22を駆動可能に接続されている。その他の構成については図1と同様であるため、同じ参照番号を付すことにより説明を省略する。
T=kB×TB+kM×TM+kE×TE …(5)
T1=kB×TB1+kM×TM1+kE×TE1 …(6)
T2=kB×TB2+kM×TM2+kE×TE2 …(7)
Claims (9)
- 車両(20,120)に搭載され、モータ(12,13)により前記車両の車輪(31~34)を駆動し、制動装置(35~38)によって前記車輪を制動する駆動システム(10,110)に適用される駆動制御装置(40)であって、
前記車両の走行路の路面状態を判定する路面判定部(41)と、
前記モータが前記車輪を駆動するモータトルクと、前記制動装置が前記車輪を制動する制動トルクとの少なくともいずれか一方を補正することにより、前記車輪の駆動軸を駆動する駆動トルクを補正して前記車両のスリップを抑制するスリップ抑制部(42)と、
前記スリップ抑制部により前記駆動トルクを補正することが決定された場合に、前記路面判定部により前記路面状態が悪路であると判定されたことを条件として、前記モータトルクを前記制動トルクに優先させて調整することにより前記駆動トルクの補正量を調整する補正量調整部(43)と、を備え、
前記補正量調整部は、前記車両が加速すると判断されることを条件として、前記駆動トルクの補正量を調整する駆動制御装置。 - 前記路面判定部は、前記路面状態について悪路の程度を算出し、
前記補正量調整部は、前記悪路の程度に応じて、前記駆動トルクの補正量を調整する請求項1に記載の駆動制御装置。 - 前記補正量調整部は、前記モータの出力が制限されていることを条件として、前記制動トルクの補正量を調整する請求項1または2に記載の駆動制御装置。
- 車両(20,120)に搭載され、モータ(12,13)により前記車両の車輪(31~34)を駆動し、制動装置(35~38)によって前記車輪を制動する駆動システム(10,110)に適用される駆動制御装置(40)であって、
前記車両の走行路の路面状態を判定する路面判定部(41)と、
前記モータが前記車輪を駆動するモータトルクと、前記制動装置が前記車輪を制動する制動トルクとの少なくともいずれか一方を補正することにより、前記車輪の駆動軸を駆動する駆動トルクを補正して前記車両のスリップを抑制するスリップ抑制部(42)と、
前記スリップ抑制部により前記駆動トルクを補正することが決定された場合に、前記路面判定部により前記路面状態が悪路であると判定されたことを条件として、前記モータトルクを前記制動トルクに優先させて調整することにより前記駆動トルクの補正量を調整する補正量調整部(43)と、を備え、
前記補正量調整部は、前記モータの出力が制限されていることを条件として、前記制動トルクの補正量を調整する駆動制御装置。 - 前記路面判定部は、前記路面状態について悪路の程度を算出し、
前記補正量調整部は、前記悪路の程度に応じて、前記駆動トルクの補正量を調整する請求項4に記載の駆動制御装置。 - 前記スリップ抑制部は、
前記車両のスリップ率が所定のスリップ判定値以上である場合に、前記駆動トルクを補正することを決定し、
前記モータトルクを補正する場合には、前記制動トルクを補正する場合よりも前記スリップ判定値を高く設定する請求項1~5のいずれかに記載の駆動制御装置。 - 前記駆動システム(110)は、前記車輪を駆動する内燃機関(18)をさらに備え、
前記スリップ抑制部は、前記制動トルクと、前記モータトルクと、前記内燃機関の内燃トルクとの少なくともいずれか1つを調整する請求項1~6のいずれかに記載の駆動制御装置。 - 前記スリップ抑制部は、前記モータトルクのみを補正する請求項1または2に記載の駆動制御装置。
- 前記スリップ抑制部は、前記制動トルクのみを補正する請求項1または2に記載の駆動制御装置。
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