JP2010006279A - 車線維持支援装置 - Google Patents
車線維持支援装置 Download PDFInfo
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Abstract
【解決手段】目標ヨーレート・目標横加速度演算部21は、車速Vと曲率半径Rとを用いて、目標ヨーレートr*と目標横加速度Gy *とを演算する。第1の減算器31は、目標ヨーレートr*から、カメラで生成された画像に基づくヨーレートrを減じて、ヨーレート偏差(r*−r)を演算する。第1の関数演算部41は、不感帯の範囲内であるときは出力が小さく、不感帯の範囲を超えると出力が大きくなる関数C1を用いることにより、目標ヨーレートr*からの偏差である(r*−r)を不感帯の範囲内に調整する。第1の関数演算部41で演算されたC1(r*−r)は、パワーステアリング機構を制御するためのアシストトルク追加量Tδの演算に使用される。
【選択図】図3
Description
図1は、本発明の実施の形態に係る車線維持支援装置の概略構成を示す図である。上記車線維持支援装置は、車両に搭載され、ドライバに生じる違和感を抑制するように前輪及び後輪操舵角を制御する。
12 トルクセンサ
13 カメラ
14 車速センサ
15 横加速度センサ
16 パワーステアリング機構
17 後輪操舵機構
20 ECU
21 目標ヨーレート・目標横加速度演算部
22 前後輪舵角演算部
31〜34 第1〜4の減算器
41〜44 第1〜4の関数演算部
Claims (8)
- 道路の車線に対する車両の偏向状態量を検出する偏向状態量検出手段と、
前記偏向状態量検出手段により検出された偏向状態量を用いて、前記車両が前記車線に沿って走行する状態を維持するための制御量を生成する制御量生成手段と、
前記制御量生成手段により生成された制御量をドライバの感受特性に基づく不感帯の範囲内になるように調整する制御量調整手段と、
前記制御量調整手段により調整された制御量に基づいて、前記車両の操舵輪の舵角を制御する操舵輪制御手段と、
を備えた車線維持支援装置。 - 前記車両の運動状態量を検出する運動状態量検出手段と、
前記車両が走行する道路の状態を示す道路状態情報を検出する道路情報検出手段と、を更に備え、
前記制御量生成手段は、前記運動状態量検出手段により検出された運動状態量と、前記道路情報検出手段により検出された道路情報と、の少なくとも1つを更に用いて前記制御量を生成する
請求項1に記載の車線維持支援装置。 - 偏向状態量が前記偏向状態量に対応する不感帯の範囲内にある場合は、前記不感帯の範囲外にある場合に比べて前記偏向状態量に対する出力値の傾きを小さくするように、前記偏向状態量検出手段により検出された偏向状態量を調整する偏向状態量調整手段を更に備え、
前記制御量生成手段は、前記偏向状態量調整手段により調整された偏向状態量を更に用いて制御量を生成する
請求項1または請求項2に記載の車線維持支援装置。 - 前記制御量生成手段は、前記偏向状態量又は前記運動状態量を示すパラメータと、前記パラメータの目標値と、の偏差を前記制御量として生成し、
前記制御量調整手段は、前記偏差が前記パラメータに対応する不感帯の範囲内にある場合は、前記不感帯の範囲外にある場合に比べて前記偏差に対する出力値の傾きを小さくするように、前記制御量生成手段により生成された偏差を調整する
請求項1から請求項3のいずれか1項に記載の車線維持支援装置。 - 前記制御量調整手段は、前記目標値に応じて前記不感帯の範囲を設定する
請求項4に記載の車線維持支援装置。 - 前記制御量調整手段は、前記目標値が大きくなるに従って上限値が大きくなるように前記不感帯の範囲を設定する
請求項5に記載の車線維持支援装置。 - 前記制御量生成手段は、更に前記制御量として操舵反力を生成し、
前記制御量調整手段は、更に前記操舵反力の不感帯の範囲を超えないように前記制御量生成手段により生成された操舵反力を調整する
請求項1から請求項6のいずれか1項に記載の車線維持支援装置。 - 前記制御量調整手段は、複数の操舵量のうち前記操舵反力を優先して調整する
請求項7に記載の車線維持支援装置。
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