JP6911775B2 - 車両用制御装置 - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
図1は、本発明が適用されたハイブリッド車両10の駆動系統を説明する骨子図で、制御系統の要部を併せて示した図である。ハイブリッド車両10は、例えばFF(前置エンジン前輪駆動)型等の横置き用の駆動系統を有するもので、エンジン12と左右一対の駆動輪14との間の動力伝達経路に、第1駆動部16、第2駆動部18、終減速装置20、および左右一対の車軸22等を備えて構成されている。エンジン12は、ガソリンエンジン、ディーゼルエンジン等の内燃機関で、そのクランク軸24には、トルク変動を吸収するダンパ装置26が接続されている。ダンパ装置26は、クランク軸24に連結される第1回転要素26a、および入力軸28を介して差動機構30に連結される第2回転要素26bとを備えているとともに、それ等の第1回転要素26aと第2回転要素26bとの間には複数種類のスプリング32および摩擦機構34が介在させられており、ねじり角Φの変化に対する入力トルクTinの変化の割合に対応する剛性値(ばね定数)が段階的に変化させられる。また、ダンパ装置26の外周端部にはトルクリミッタ35が設けられている。このダンパ装置26は、入力トルクTinに関連する回転特性を有する回転部材に相当し、第1回転要素26aはエンジン12側の連結部に相当する。
(a) 蓄電装置62の蓄電残量SOCが、エンジン12の始動性確保等のために予め定められた下限値以下である。
(b) エンジン始動要求がある(エアコン要求、運転者のアクセル操作など)。
(a) 蓄電装置62の蓄電残量SOCが、エンジン12の始動性確保等のために予め定められた下限値以下である。
(b) エンジン始動要求がある(エアコン要求、運転者のアクセル操作など)。
(c) 車両が共振する条件である(タイヤ入力サージ、波状路など)。
(d) 駆動力不足になる(坂路、縁石、高駆動力走行など)。
(e) 他の要件でモータトルクを発生する必要がある(モータ押し当てトルク、エンジン始動時など)。
(f) モータコギングトルクが大きい低回転領域(低車速領域)である。
(g) 車両停車状態の計測時に車両が移動している。
Claims (9)
- エンジンと、電動機と、該エンジンと該電動機との間に設けられ、入力トルクに関連する回転特性を有する回転部材と、を備える車両用の制御装置において、
前記車両は、前記回転部材の前記エンジン側の連結部の少なくとも一方向の回転を阻止する回転ロック機構と、前記エンジンの回転速度を検出するエンジン回転速度センサと、を備えており、
前記回転ロック機構により前記連結部の回転を阻止した状態で、前記電動機により前記回転部材にトルクを加えて該回転部材のねじり角を計測することにより、前記回転特性として少なくともねじり剛性を検出する特性検出部と、
前記特性検出部によって検出された前記ねじり剛性に基づいて実共振周波数を算出し、前記エンジン回転速度センサから供給されるエンジン回転速度信号の中の前記実共振周波数の振動成分が減衰されるように該エンジン回転速度信号をフィルタリングするエンジン回転フィルタリング部と、
を有することを特徴とする車両用制御装置。 - 前記実共振周波数と予め定められた設定共振周波数との周波数差に基づいて、該設定共振周波数に応じて予め定められた減衰周波数帯域および減衰ゲインに関する基準フィルタ特性を補正するフィルタ補正部を有し、
前記エンジン回転フィルタリング部は、前記フィルタ補正部によって前記基準フィルタ特性が補正された後のフィルタ特性に従って前記エンジン回転速度信号をフィルタリングする
ことを特徴とする請求項1に記載の車両用制御装置。 - 前記フィルタ補正部は、前記実共振周波数と前記設定共振周波数との周波数差が予め定められた大小判定値以上の場合は、前記基準フィルタ特性の前記減衰周波数帯域を共振周波数のずれ方向へ移動補正し、前記周波数差が前記大小判定値よりも小さい場合は、前記基準フィルタ特性の前記減衰ゲインを大きくするとともに前記減衰周波数帯域を狭くする強調補正を行なう
ことを特徴とする請求項2に記載の車両用制御装置。 - 前記電動機により前記回転部材を介して前記エンジンを回転駆動する際に、前記エンジン回転フィルタリング部によってフィルタリングされた後の前記エンジン回転速度信号を用いて所定の制御を行なうエンジン回転駆動部を有する
ことを特徴とする請求項1〜3の何れか1項に記載の車両用制御装置。 - 前記エンジンの作動中に、前記エンジン回転フィルタリング部によってフィルタリングされた後の前記エンジン回転速度信号の回転変動に基づいて前記エンジンの失火判定を行なう失火検出部を有する
ことを特徴とする請求項1〜3の何れか1項に記載の車両用制御装置。 - 前記エンジンの作動中に、前記エンジン回転フィルタリング部によってフィルタリングされた後の前記エンジン回転速度信号の回転変動に基づいて動力伝達経路の異音判定を行なう異音検出部を有する
ことを特徴とする請求項1〜3の何れか1項に記載の車両用制御装置。 - エンジンと、電動機と、該エンジンと該電動機との間に設けられ、入力トルクに関連する回転特性を有する回転部材と、を備える車両用の制御装置において、
前記車両は、前記回転部材の前記エンジン側の連結部の少なくとも一方向の回転を阻止する回転ロック機構と、前記エンジンの回転速度を検出するエンジン回転速度センサと、を備えており、
前記回転ロック機構により前記連結部の回転を阻止した状態で、前記電動機により前記回転部材にトルクを加えて該回転部材のねじり角を計測することにより、前記回転特性として少なくともねじり剛性を検出する特性検出部と、
前記特性検出部によって検出された前記ねじり剛性に基づいて実共振周波数を算出し、前記電動機により前記回転部材を介して前記エンジンを回転させる際に、前記実共振周波数に起因して生じる前記エンジンの回転振動が抑制されるように、前記電動機の目標回転速度を前記実共振周波数に応じて周期変動させる電動機回転変動付与部と、
を有することを特徴とする車両用制御装置。 - 前記実共振周波数と予め定められた設定共振周波数との周波数差に基づいて、前記目標回転速度に付与する周期変動の振幅および変動周波数帯域に関して前記設定共振周波数に応じて予め定められた基準変動特性を補正する変動特性補正部を有し、
前記電動機回転変動付与部は、前記変動特性補正部によって前記基準変動特性が補正された後の変動特性に従って前記目標回転速度を周期変動させる
ことを特徴とする請求項7に記載の車両用制御装置。 - 前記変動特性補正部は、前記実共振周波数と前記設定共振周波数との周波数差が予め定められた大小判定値以上の場合は、前記基準変動特性の前記変動周波数帯域を共振周波数のずれ方向へ移動補正し、前記周波数差が前記大小判定値よりも小さい場合は、前記基準変動特性の前記振幅を大きくするとともに前記変動周波数帯域を狭くする強調補正を行なう
ことを特徴とする請求項8に記載の車両用制御装置。
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