JP5844331B2 - 縦力制御装置およびそれを備えた鞍乗り型車両 - Google Patents
縦力制御装置およびそれを備えた鞍乗り型車両 Download PDFInfo
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
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- Automation & Control Theory (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Regulating Braking Force (AREA)
Description
(2.1)測定値を所定の演算式に代入して物理量aの値を算出すること:
(2.2)測定値と物理量aの値との対応関係を示すテーブルまたはデータベースを参照して前記測定値に対応する物理量aの値をテーブルなどから読み出すこと:
(2.3)測定値から物理量aの値を推定すること。
まず、図1を参照しながら、本実施形態における自動二輪車1の概略構成を説明する。図1は、自動二輪車1を模式的に示す側面図である。
次に、図1および図2を参照しながら、本実施形態における自動二輪車1が備える縦力制御装置31の構成を説明する。図2は、縦力制御装置31を模式的に示す機能ブロック図である。
続いて、縦力制御部32の構成を説明する。
縦力制御部32は、横滑りが発生しているか否かを判別するために、まず、自動二輪車1の走行速度、バンク角、横方向加速度およびヨーレートに基づいて、横滑り加速度算出部47によって横滑り加速度を算出する。
+If・dωz/dt・secθ ・・・(4)
dry/dt=−V・ωz・secθ−g・tanθ+Ay・secθ
−Ir・dωz/dt・secθ ・・・(5)
+If・dωz/dt・secθ+If・wr・ωz・tanθ・secθ ・・・(6)
dry/dt=−V・ωz・secθ−g・tanθ+Ay・secθ
−Ir・dωz/dt・secθ−Ir・wr・ωz・tanθ・secθ ・・・(7)
駆動力推定部51には、スロットルセンサ37からスロットル開度が入力される。駆動力推定部51は、入力されたスロットル開度に基づいて、駆動輪に作用している駆動力を推定する。本実施形態では、後輪23が駆動輪であるので、前輪8には駆動力は作用していない。駆動力推定部51によって推定された後輪23の駆動力は、縦力推定部53へ出力される。
次に、図7を参照しながら、縦力制御部32の制御動作を説明する。図7は、縦力制御動作のフローチャートである。
14 クラッチアクチュエータ
32 縦力制御部
33 ジャイロスコープ
34 横加速度センサ
35 前輪車速センサ
36 後輪車速センサ
37 スロットルセンサ
38 ブレーキモジュレータ
39 点火プラグ
40 燃料噴射装置
41 スロットルアクチュエータ
45 車速取得部
46 バンク角取得部
47 横滑り加速度算出部
49 判別部
50 縦力低減制御部
51 駆動力推定部
52 制動力推定部
53 縦力推定部
Claims (15)
- 車両に作用する左右方向の加速度である横加速度を取得する横加速度取得部と、
車両のバンク角を取得するバンク角取得部と、
取得された前記横加速度および前記バンク角に基づいて、車輪に作用する前後方向の力の和である縦力の絶対値を少なくとも駆動輪について低減させる縦力制御部と、を備え、
前記縦力制御部は、
少なくとも前記横加速度および前記バンク角に基づいて少なくとも駆動輪の横滑り加速度を算出する横滑り加速度算出部と、
算出された前記横滑り加速度が予め定められた閾値以上であるか否かを判別する判別部と、
を有し、
前記閾値は、車両の走行速度が第1の速度域にあるときよりも、前記走行速度が前記第1の速度域よりも高速側の第2の速度域にあるときにおいて大きい縦力制御装置。 - 前記閾値は、前記第1の速度域において略一定である請求項1に記載の縦力制御装置。
- 前記閾値は、前記第2の速度域において前記走行速度が大きくなるほど大きくなる請求項1または2に記載の縦力制御装置。
- 前記閾値は、前記第2の速度域よりもさらに高速側の第3の速度域において、前記縦力制御部による縦力の低減が実質的に行われないように設定されている請求項1から3のいずれかに記載の縦力制御装置。
- 前記判別部は、前記閾値を全速度域にわたって略同じ値だけ増減させ得る請求項1から4のいずれかに記載の縦力制御装置。
- 車両のヨーレートを検出するヨーレートセンサと、
前記走行速度を取得する車速取得部と、をさらに備え、
前記縦力制御部は、前記横加速度および前記バンク角だけでなく、前記ヨーレートおよび前記走行速度にも基づいて、前記縦力の絶対値を低減させる請求項1から5のいずれかに記載の縦力制御装置。 - 車両のロールレートを検出するロールレートセンサをさらに備え、
前記縦力制御部は、前記ロールレートにも基づいて前記縦力の絶対値を低減させる請求項6に記載の縦力制御装置。 - 前記横滑り加速度算出部は、前記横加速度および前記バンク角だけでなく、前記ヨーレートおよび前記走行速度にも基づいて、前記横滑り加速度を算出する請求項6または7に記載の縦力制御装置。
- 前記縦力制御部は、
前記横滑り加速度の大きさに応じて、前記縦力の絶対値の低減量を変更する請求項1から8のいずれかに記載の縦力制御装置。 - 前記縦力制御部は、
前記横滑り加速度と前記閾値との差、および/または、前記横滑り加速度の単位時間当たりの変化量に応じて前記縦力の絶対値の低減量を変更する請求項1から9のいずれかに記載の縦力制御装置。 - 駆動輪に作用する駆動力を推定する駆動力推定部と、
少なくとも駆動輪に作用する制動力を推定する制動力推定部と、
少なくとも駆動輪に作用する前記駆動力および前記制動力の和である縦力を推定する縦力推定部と、
をさらに備える請求項1から10のいずれかに記載の縦力制御装置。 - 前記縦力制御部は、前記駆動力を低減または増加させることによって、前記縦力を低減させ得る請求項1から11のいずれかに記載の縦力制御装置。
- 前記縦力制御部は、燃料噴射量を低減させること、クラッチの伝達トルクを低減させること、点火プラグの点火頻度を低減させること、および/または、点火プラグの点火時期を遅角することによって、前記駆動力を低減させ得る請求項12に記載の縦力制御装置。
- 前記縦力制御部は、前記制動力を低減または増加させることによって、前記縦力を低減させ得る請求項12または13に記載の縦力制御装置。
- 請求項1から14のいずれかに記載の縦力制御装置を備えた鞍乗り型車両。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013218224A JP5844331B2 (ja) | 2013-10-21 | 2013-10-21 | 縦力制御装置およびそれを備えた鞍乗り型車両 |
US14/520,096 US9079584B2 (en) | 2013-10-21 | 2014-10-21 | Longitudinal force control apparatus and saddled vehicle having the same |
EP14189675.3A EP2862764B1 (en) | 2013-10-21 | 2014-10-21 | Longitudinal force control apparatus and saddled or straddle type vehicle having the same |
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