JP6546199B2 - 駆動装置の制御装置及び制御方法ならびに記録媒体 - Google Patents
駆動装置の制御装置及び制御方法ならびに記録媒体 Download PDFInfo
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- JP6546199B2 JP6546199B2 JP2016569468A JP2016569468A JP6546199B2 JP 6546199 B2 JP6546199 B2 JP 6546199B2 JP 2016569468 A JP2016569468 A JP 2016569468A JP 2016569468 A JP2016569468 A JP 2016569468A JP 6546199 B2 JP6546199 B2 JP 6546199B2
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
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Description
この駆動モードは、左右の後輪WRL、WRRを第1及び第2リヤモータ41、61の動力で駆動する動作モードである。駆動モードでは、第1及び第2リヤモータ41、61で力行を行うとともに、両者41、61に供給される電力を制御する。また、左右の後輪WRL、WRRを正転させる場合には、第1及び第2リヤモータ41、61のロータ43、63を正転させるとともに、油圧ブレーキ84で第1及び第2リングギヤ53、73を制動する。図4は、駆動モード中、左右の後輪WRL、WRRを正転させた場合における各種の回転要素の間の回転数の関係及びトルクの釣合関係の一例を示している。
この回生モードは、車両Vの走行エネルギを用いて第1及び第2リヤモータ41、61で発電(回生)を行うとともに、回生した電力をバッテリ7に充電する動作モードである。回生モードでは、第1及び第2リヤモータ41、61で回生する電力を制御するとともに、油圧ブレーキ84で第1及び第2リングギヤ53、73を制動する。図5は、回生モードにおける各種の回転要素の間の回転数の関係及びトルクの釣合関係を示している。同図において、TRLは、左輪トルク(左後輪WRLのトルク)であり、TRRは、右輪トルク(右後輪WRRのトルク)である。また、RBRは、油圧ブレーキ84の反力トルクである。その他のパラメータについては、図4を参照して説明したとおりである。なお、回生モード中には、第1及び第2リヤモータ41、61で回生が行われるので、第1及び第2リヤモータ出力トルクTM1、TM2は、負のトルク(制動トルク)である。
この駆動・回生モードは、第1及び第2リヤモータ41、61の一方で力行を行い、両モータ41、61の他方で回生を行う動作モードである。駆動・回生モード中、この一方のモータに供給される電力と、他方のモータで回生する電力を制御するとともに、ワンウェイクラッチ83又は油圧ブレーキ84で第1及び第2リングギヤ53、73を制動する。図6は、第1リヤモータ41で力行を行うとともに、第2リヤモータ61で回生を行った場合における各種の回転要素の間の回転数の関係及びトルクの釣合関係を示している。同図における各種のパラメータは、図4及び図5を参照して説明したとおりである。
ΔTT=2・r・YMOBJ/Tr ……(1)
ここで、rは、左右の後輪WRL、WRRの各々の半径であり、Trは、トレッド幅(左右の後輪WRL、WRRの間の距離)である。
TTL+TTR=TRT ……(2)
TTL−TTR=ΔTT ……(3)
|(TWLOBJ−TWROBJ)−(TWLOBJZ−TWROBJZ)|
<|(TWLOBJ+TWROBJ)−(TWLOBJZ+TWROBJZ)| ……(4)
前述したように、制限制御中フラグF_LIMITCが保持制御フラグF_HOLDCと同様に設定されることから明らかなように、ステップ62によるデルタリミット処理は、車両Vの減速中に実行される。このため、この式(4)の右辺における(TWLOBJ+TWROBJ)−(TWLOBJZ+TWROBJZ)は負値になる一方、左辺における(TWLOBJ−TWROBJ)−(TWLOBJZ−TWROBJZ)は、正値になる場合と負値になる場合がある。
WRL 左後輪(左駆動部、左車輪)
WRR 右後輪(右駆動部、右車輪)
DRS 後輪駆動装置(駆動装置)
1 制御装置
2 ECU(制御手段、目標値算出手段、減速取得手段、コン
ピュータ)
2a ROM(記憶媒体)
21 車速センサ(速度取得手段、運動状態取得手段、制御用パ
ラメータ取得手段)
22 操舵角センサ(運動状態取得手段、制御用パラメータ取得
手段)
23 横加速度センサ(運動状態取得手段、制御用パラメータ取
得手段)
24 ヨーモーメントセンサ(運動状態取得手段、制御用パラメ
ータ取得手段)
25 アクセル開度センサ(制御用パラメータ取得手段)
26 ブレーキスイッチ(減速取得手段)
41 第1リヤモータ(左回転電機)
61 第2リヤモータ(右回転電機)
VP 車速(輸送機器の進行速度、輸送機器の運動状態、制御用
パラメータ)
θ 操舵角(輸送機器の運動状態、制御用パラメータ)
GL 横加速度(輸送機器の運動状態、制御用パラメータ)
YM ヨーモーメント(輸送機器の運動状態、制御用パラメータ)
AP アクセル開度(制御用パラメータ)
TRT 目標トルク和(左右和目標値)
ΔTT 目標トルク差(左右差目標値)
TWLPRO 左輪暫定目標トルク(通常用制御で制御される値)
TWRPRO 右輪暫定目標トルク(通常用制御で制御される値)
TWLOBJZ 前回値(制限制御の終了時に制御されていた値)
TWROBJZ 前回値(制限制御の終了時に制御されていた値)
VPHI 高車速(所定速度)
TTWLR 左右トルク和(左右駆動力和)
ΔTWLR 左右トルク差(左右駆動力差)
Claims (10)
- 輸送機器の進行方向に対して左側に配置された該輸送機器の推進用の左駆動部の駆動力である左駆動力と、前記輸送機器の進行方向に対して右側に配置された該輸送機器の推進用の右駆動部の駆動力である右駆動力とを調整することによって、前記左駆動力と前記右駆動力との和である左右駆動力和と、前記左駆動力と前記右駆動力との差異である左右駆動力差とを互いに独立して変更可能な駆動装置の制御装置であって、
前記輸送機器の旋回方向と逆方向のヨーモーメントが該輸送機器に作用するように、前記駆動装置を介して前記左駆動力及び前記右駆動力を制御することで前記左右駆動力差を生じさせる逆配分制御を実行する制御手段と、
前記輸送機器の減速を取得する減速取得手段と、を備え、
前記制御手段は、前記逆配分制御の実行中、前記輸送機器の減速が取得されたときに、前記逆配分制御を維持するとともに、前記左右駆動力差の変化が前記左右駆動力和の変化よりも小さくなるように、前記左駆動力及び前記右駆動力を制御する制限制御を実行することを特徴とする駆動装置の制御装置。 - 前記輸送機器の進行速度を取得する速度取得手段をさらに備え、
前記制御手段は、前記逆配分制御の実行中、前記取得された前記輸送機器の進行速度が所定速度以上である場合において、該輸送機器の減速が取得されたときに、前記制限制御を開始することを特徴とする請求項1に記載の駆動装置の制御装置。 - 前記制御手段は、前記制限制御として、前記左右駆動力差がほぼ一定に保持されるように、前記左駆動力及び前記右駆動力を制御することを特徴とする、請求項1又は2に記載の駆動装置の制御装置。
- 前記減速取得手段は、前記輸送機器の減速の終了又は前記輸送機器の加速をさらに取得し、
前記制御手段は、前記輸送機器の減速の終了又は前記輸送機器の加速が取得されるまで、前記制限制御を継続することを特徴とする、請求項1ないし3のいずれかに記載の駆動装置の制御装置。 - 前記輸送機器の運動状態を取得する運動状態取得手段をさらに備え、
前記制御手段は、前記制限制御の終了後、前記左駆動力及び前記右駆動力を、該制限制御の終了時に制御されていた値から、前記取得された輸送機器の運動状態に応じて通常用制御で制御される値に徐々に戻すように制御することを特徴とする、請求項1ないし4のいずれかに記載の駆動装置の制御装置。 - 前記輸送機器は車両であり、
前記左右の駆動部は、前記車両の左右の車輪であることを特徴とする、請求項1ないし5のいずれかに記載の駆動装置の制御装置。 - 前記駆動装置は、前記左駆動部及び前記右駆動部にそれぞれ連結された左回転電機及び右回転電機を有することを特徴とする、請求項1ないし6のいずれかに記載の駆動装置の制御装置。
- 輸送機器の進行方向に対して左側に配置された該輸送機器の推進用の左駆動部の駆動力である左駆動力と、前記輸送機器の進行方向に対して右側に配置された該輸送機器の推進用の右駆動部の駆動力である右駆動力とを調整することによって、前記左駆動力と前記右駆動力との和である左右駆動力和と、前記左駆動力と前記右駆動力との差異である左右駆動力差とを互いに独立して変更可能な駆動装置の制御装置であって、
前記輸送機器の運動状態及び前記輸送機器の操縦者の要求の少なくとも一方を表す制御用パラメータを取得する制御用パラメータ取得手段と、
該取得された制御用パラメータに基づいて、前記左右駆動力差の目標値である左右差目標値と、前記左右駆動力和の目標値である左右和目標値とを算出する目標値算出手段と、
該算出された左右差目標値及び左右和目標値に応じて、前記左駆動力及び前記右駆動力を制御する制御手段と、を備え、
該制御手段は、前記左右差目標値に応じ、前記輸送機器の旋回方向と逆方向のヨーモーメントが該輸送機器に作用するように、前記駆動装置を介して前記左駆動力及び前記右駆動力を制御することで前記左右駆動力差を生じさせる逆配分制御を実行し、
該逆配分制御の実行中、前記左右差目標値の変化及び前記左右和目標値の変化の双方が取得されたときに、前記逆配分制御を維持するとともに、前記左右駆動力差の変化が前記左右駆動力和の変化よりも小さくなるように、前記左駆動力及び前記右駆動力を制御する制限制御を実行することを特徴とする駆動装置の制御装置。 - 輸送機器の進行方向に対して左側に配置された該輸送機器の推進用の左駆動部の駆動力である左駆動力と、前記輸送機器の進行方向に対して右側に配置された該輸送機器の推進用の右駆動部の駆動力である右駆動力とを調整することによって、前記左駆動力と前記右駆動力との和である左右駆動力和と、前記左駆動力と前記右駆動力との差異である左右駆動力差とを互いに独立して変更可能な駆動装置の制御方法であって、
前記輸送機器の旋回方向と逆方向のヨーモーメントが該輸送機器に作用するように、前記駆動装置を介して前記左駆動力及び前記右駆動力を制御することで前記左右駆動力差を生じさせる逆配分制御を実行するステップと、
前記輸送機器の減速を取得するステップと、
前記逆配分制御の実行中、前記輸送機器の減速が取得されたときに、前記逆配分制御を維持するとともに、前記左右駆動力差の変化が前記左右駆動力和の変化よりも小さくなるように、前記左駆動力及び前記右駆動力を制御する制限制御を実行するステップと、
を含むことを特徴とする駆動装置の制御方法。 - 輸送機器の進行方向に対して左側に配置された該輸送機器の推進用の左駆動部の駆動力である左駆動力と、前記輸送機器の進行方向に対して右側に配置された該輸送機器の推進用の右駆動部の駆動力である右駆動力とを調整することによって、前記左駆動力と前記右駆動力との和である左右駆動力和と、前記左駆動力と前記右駆動力との差異である左右駆動力差とを互いに独立して変更可能な駆動装置を制御するための制御処理をコンピュータに実行させるプログラムが記録された記録媒体であって、
前記制御処理は、
前記輸送機器の旋回方向と逆方向のヨーモーメントが該輸送機器に作用するように、前記駆動装置を介して前記左駆動力及び前記右駆動力を制御することで前記左右駆動力差を生じさせる逆配分制御を実行するステップと、
前記輸送機器の減速を取得するステップと、
前記逆配分制御の実行中、前記輸送機器の減速が取得されたときに、前記逆配分制御を維持するとともに、前記左右駆動力差の変化が前記左右駆動力和の変化よりも小さくなるように、前記左駆動力及び前記右駆動力を制御する制限制御を実行するステップと、
を含むことを特徴とする記録媒体。
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JP6617723B2 (ja) * | 2017-01-26 | 2019-12-11 | トヨタ自動車株式会社 | 制動装置 |
JP6841078B2 (ja) * | 2017-02-21 | 2021-03-10 | トヨタ自動車株式会社 | 駆動力制御装置 |
CN108528269B (zh) | 2017-02-21 | 2021-05-14 | 丰田自动车株式会社 | 驱动力控制装置 |
JP6445091B2 (ja) * | 2017-05-26 | 2018-12-26 | 本田技研工業株式会社 | 動力装置 |
JP6844500B2 (ja) * | 2017-10-30 | 2021-03-17 | トヨタ自動車株式会社 | 車両の挙動制御装置 |
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