JP6031166B1 - 車両の自動運転制御装置 - Google Patents
車両の自動運転制御装置 Download PDFInfo
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Abstract
Description
ここで、Ieは駆動系の等価慣性であり、ωslipは駆動系の回転速度である。
Tcont=Tauto …(3)
ここで、Tautoは、例えば、ドライバにより予め設定された車速で走行するのに必要な駆動トルクや、先行車を追い越す際の駆動トルク等のTCSが作動する前に設定されている自動運転に必要な自動運転要求駆動トルクである。
ここで、ΔTtcsは、所定のTCS要求駆動トルクの復帰量(例えば、一定値、或いは、スリップ量等に応じて設定される量)である。尚、(4)式中の添字(t)は、今回値であることを示し、(t-1)は、前回値であることを示す。
ここで、ΔTcontは、予め設定するTCS作動時の自動運転要求駆動トルク低減量であり、例えば、図3に示すようなマップを参照して設定される。具体的には、前回のトラクションコントロール要求駆動トルクTtcs(t-1)と、TCS作動時の自動運転要求駆動トルクTcont(t-1)との差に応じて設定され、この差が大きいほど大きな低減量に設定され、TCS作動時の自動運転要求駆動トルクTcontが、素早くトラクションコントロール要求駆動トルクTtcsに近づくように設定される。
ここで、ΔTautoは、予め設定する再設定された自動運転要求駆動トルクのトルク増加量であり、例えば、図4に示すようなマップを参照して設定される。具体的には、路面摩擦係数μが小さいときほど、トルク増加量ΔTautoが小さな値に設定され、駆動トルクが緩やかに復帰するように設定されている。
10 走行制御部(トラクションコントロール要求駆動トルク設定手段、自動運転要求駆動トルク低下手段、トルク比較手段、自動運転要求駆動トルク設定手段)
11 周辺環境認識装置
12 走行パラメータ検出装置
13 自車位置情報検出装置
14 車車間通信装置
15 道路交通情報通信装置
16 スイッチ群
21 エンジン制御装置
22 ブレーキ制御装置
23 ステアリング制御装置
24 表示装置
25 スピーカ・ブザー
Claims (5)
- 自車両が走行する走行環境情報と自車両の走行情報を検出し、所定に設定される自動運転要求駆動トルクを目標トルクとして自動運転制御を実行する車両の自動運転制御装置において、
予め設定するトラクションコントロールの作動条件が成立した際に、トラクションコントロール要求駆動トルクを目標トルクとして設定し、駆動トルクを低下させて駆動輪のスリップを抑制するトラクションコントロール要求駆動トルク設定手段と、
上記トラクションコントロールが作動した際に、上記自動運転要求駆動トルクを予め設定する低減量で次第に低下させる自動運転要求駆動トルク低下手段と、
上記トラクションコントロール要求駆動トルク設定手段が設定する上記トラクションコントロール要求駆動トルクと、上記自動運転要求駆動トルク低下手段で低下させられた自動運転要求駆動トルクとを比較するトルク比較手段と、
上記トルク比較手段で、上記トラクションコントロール要求駆動トルクが上記低下させられた自動運転要求駆動トルクを上回った場合は、上記トラクションコントロールを終了し、上記低下させられた上記自動運転要求駆動トルクを上記自動運転制御の自動運転要求駆動トルクとして再設定する自動運転要求駆動トルク設定手段と、
を備えたことを特徴とする車両の自動運転制御装置。 - 上記自動運転要求駆動トルク低下手段は、上記トラクションコントロール要求駆動トルク設定手段が設定する上記トラクションコントロール要求駆動トルクと、上記自動運転要求駆動トルク低下手段で低下させられた自動運転要求駆動トルクとの差に応じて上記低減量を設定することを特徴とする請求項1記載の車両の自動運転制御装置。
- 上記自動運転要求駆動トルク設定手段は、上記再設定された自動運転要求駆動トルクが、予め設定する閾値以上であり、かつ、上記再設定された自動運転要求駆動トルクが、上記トラクションコントロールの作動する前の上記自動運転要求駆動トルクよりも予め設定した値だけ小さい値を基準値として該基準値以上である場合には、上記再設定された自動運転要求駆動トルクを上記自動運転制御の上記自動運転要求駆動トルクとして設定して自動運転を継続させることを特徴とする請求項1又は請求項2記載の車両の自動運転制御装置。
- 上記自動運転要求駆動トルク設定手段は、上記再設定された自動運転要求駆動トルクが、予め設定する閾値よりも小さい場合、或いは、上記再設定された自動運転要求駆動トルクが、上記トラクションコントロールの作動する前の上記自動運転要求駆動トルクよりも予め設定した値だけ小さい値を基準値として該基準値よりも小さい場合には上記再設定された自動運転要求駆動トルクを予め設定する増加量で増加させることを特徴とする請求項1乃至請求項3の何れか一つに記載の車両の自動運転制御装置。
- 上記自動運転要求駆動トルク設定手段が上記再設定された自動運転要求駆動トルクを増加させる増加量は、路面摩擦係数に応じて可変設定することを特徴とする請求項4記載の車両の自動運転制御装置。
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