JP6540716B2 - 車両の制御装置および車両の制御方法 - Google Patents
車両の制御装置および車両の制御方法 Download PDFInfo
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- JP6540716B2 JP6540716B2 JP2016571531A JP2016571531A JP6540716B2 JP 6540716 B2 JP6540716 B2 JP 6540716B2 JP 2016571531 A JP2016571531 A JP 2016571531A JP 2016571531 A JP2016571531 A JP 2016571531A JP 6540716 B2 JP6540716 B2 JP 6540716B2
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- vehicle
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- target value
- friction braking
- control device
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- 230000007423 decrease Effects 0.000 claims description 17
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- 230000001172 regenerating effect Effects 0.000 description 11
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- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Electromagnetism (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Regulating Braking Force (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Controls For Constant Speed Travelling (AREA)
Description
Jm:電動モータのイナーシャ
Jw:駆動輪のイナーシャ
M:車両の重量
Kd:駆動系の捻り剛性
Kt:タイヤと路面の摩擦に関する係数
N:オーバーオールギヤ比
r:タイヤの荷重半径
ωm:電動モータの角速度
Tm:トルク目標値Tm*
Td:駆動輪のトルク
F:車両に加えられる力
V:車両の速度
ωw:駆動輪の角速度
Tb:摩擦制動量(モータ軸換算トルク)
そして、図4より、以下の運動方程式を導くことができる。ただし、式(1)〜(3)中の符号の右上に付されているアスタリスク(*)は、時間微分を表している。また、ωw>0の場合にTb>0、ωw<0の場合にTb<0、ωw=0の場合にTb=0とする。
Claims (9)
- 摩擦制動力を発生させて車両を減速させる車両の制御装置であって、
前記車両の走行速度に比例する速度パラメータを検出する速度パラメータ検出手段と、
アクセル操作量を検出するアクセル操作量検出手段と、
前記車両に作用する外乱トルクを推定する外乱トルク推定手段と、
電気的に摩擦制動量を調整可能な摩擦制動量調整手段と、
車両状態に基づいて、第1のトルク目標値を算出する第1のトルク目標値算出手段と、
前記速度パラメータの低下とともに前記外乱トルクに漸近的に収束する第2のトルク目標値を算出する第2のトルク目標値算出手段と、
前記第1のトルク目標値と前記第2のトルク目標値の大きさを比較することによって、前記車両が停車間際であるか否かを判定する停車間際判定手段と、
前記車両が停車間際ではないと判定されると、前記第1のトルク目標値に基づいて前記摩擦制動量を決定し、前記アクセル操作量が所定値以下であり、かつ、前記車両が停車間際であると判定されると、前記第2のトルク目標値に基づいて前記速度パラメータの低下とともに前記摩擦制動量を前記外乱トルクに漸近的に収束させる制御手段と、
を備えることを特徴とする車両の制御装置。 - 請求項1に記載の車両の制御装置において、
前記速度パラメータに所定のゲインを乗算して、速度フィードバックトルクを算出する速度フィードバックトルク算出手段をさらに備え、
前記制御手段は、前記速度フィードバックトルクおよび前記外乱トルクに基づいて、前記摩擦制動量を決定する、
車両の制御装置。 - 請求項1または請求項2に記載の車両の制御装置において、
前記外乱トルク推定手段は、前記車両へのトルク入力に対する前記速度パラメータの伝達特性のモデルと、摩擦制動量とに基づいて、前記外乱トルクを推定する、
車両の制御装置。 - 請求項3に記載の車両の制御装置において、
前記摩擦制動量と関連する摩擦制動量関連値を検出する検出手段をさらに備え、
前記外乱トルク推定手段が前記外乱トルクを推定する際に用いる前記摩擦制動量は、前記検出手段によって検出される摩擦制動量関連値に基づいて算出される、
車両の制御装置。 - 請求項3に記載の車両の制御装置において、
前記外乱トルク推定手段が前記外乱トルクを推定する際に用いる前記摩擦制動量は、摩擦制動量指令値である、
車両の制御装置。 - 請求項3から請求項5のいずれか一項に記載の車両の制御装置において、
前記外乱トルク推定手段は、前記車両へのトルク入力に対する前記速度パラメータの伝達特性のモデルと、前記車両への摩擦制動量入力に対する前記速度パラメータの伝達特性のモデルと、前記摩擦制動量とに基づいて、前記外乱トルクを推定する、
車両の制御装置。 - 請求項1から請求項6のいずれか一項に記載の車両の制御装置において、
前記速度パラメータは、原動機の回転速度である、
車両の制御装置。 - 請求項7に記載の車両の制御装置において、
登坂路において前記アクセル操作量が所定値以下であり、かつ、前記車両が停車間際になると、前記原動機の回転速度の低下とともに前記原動機のトルクを前記外乱トルクに収束させる原動機トルク調整手段をさらに備える、
車両の制御装置。 - 摩擦制動力を発生させて車両を減速させる制動力発生手段と、前記車両の状態を検出する状態検出手段と、前記状態検出手段の検出結果に基づいて前記制動力発生手段の制御を行う制御手段とを有する車両の制御方法であって、
前記制御手段は、
前記車両の走行速度に比例する速度パラメータを検出するステップと、
アクセル操作量を検出するステップと、
前記車両に作用する外乱トルクを推定するステップと、
車両状態に基づいて、第1のトルク目標値を算出する第1のトルク目標値算出ステップと、
前記速度パラメータの低下とともに前記外乱トルクに漸近的に収束する第2のトルク目標値を算出する第2のトルク目標値算出ステップと、
前記第1のトルク目標値と前記第2のトルク目標値の大きさを比較することによって、前記車両が停車間際であるか否かを判定する停車間際判定ステップと、
前記車両が停車間際ではないと判定されると、前記第1のトルク目標値に基づいて摩擦制動量を決定し、前記アクセル操作量が所定値以下であり、かつ、前記車両が停車間際であると判定されると、前記第2のトルク目標値に基づいて前記速度パラメータの低下とともに前記摩擦制動量を前記外乱トルクに漸近的に収束させるステップと、
を備えることを特徴とする車両の制御方法。
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