JP7029533B2 - 車両の発進プロセスを制御する方法及び走行ダイナミックシステム - Google Patents
車両の発進プロセスを制御する方法及び走行ダイナミックシステム Download PDFInfo
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- JP7029533B2 JP7029533B2 JP2020529535A JP2020529535A JP7029533B2 JP 7029533 B2 JP7029533 B2 JP 7029533B2 JP 2020529535 A JP2020529535 A JP 2020529535A JP 2020529535 A JP2020529535 A JP 2020529535A JP 7029533 B2 JP7029533 B2 JP 7029533B2
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- IQVNEKKDSLOHHK-FNCQTZNRSA-N (E,E)-hydramethylnon Chemical compound N1CC(C)(C)CNC1=NN=C(/C=C/C=1C=CC(=CC=1)C(F)(F)F)\C=C\C1=CC=C(C(F)(F)F)C=C1 IQVNEKKDSLOHHK-FNCQTZNRSA-N 0.000 description 1
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- Control Of Transmission Device (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Description
発進プロセスに関する運転者要求が出現することと、
車輪のスリップmsが、定義された車輪のスリップ限界値ms_maxよりも大きいことと、
粘着係数μが小さいことと、
から成るグループの中の一つ又は複数を満たす場合にも、本方法が実行される。
2 走行路
3 前輪
4a,4b 駆動される後輪
5 エンジン
6 例えば、自動変速機のためのクラッチ・変速機ユニット
7 走行ダイナミックシステム
9 被動軸
10 エンジン制御機器
11 変速機制御機器
12 ブレーキ制御機器
13 ブレーキシステム
14a,14b 駆動される後輪の車輪ブレーキ
15a,15b 後輪4a,4bにおける車輪回転数センサー
16 走行ダイナミック制御機器
18 操作機器
19 アクセルペダル
20 アクセルペダル制御機器
S1 イグニッション信号
S2 作動信号
S3 アクセルペダル信号
S4 変速機制御要求信号
S5 エンジンモーメント要求信号
S6 ATC要求信号
α 走行路の勾配、走行路勾配
μ 車輪3,4a,4bに対する走行路2の静止粘着係数(摩擦係数)
μd 車輪3,4a,4bに対する走行路2の動粘着係数
A 水平線
E クラッチ接続プロセス
Fa 駆動力
Fa,max 最大限に伝達可能な力
Ha 後車軸
HSKA 不安定な分岐
K1 判定基準
ms 後輪4a,4bの車輪スリップ
ms(Fa,max) 目標スリップ
M4 エンジン駆動モーメント
M4_max 最大エンジン駆動モーメント
M9 出力駆動モーメント
n3 前輪3の車輪速度
n4a,n4b 後輪4a,4bの車輪速度
P ブレーキ圧
P4a,P4b 二つの後輪ブレーキに関するブレーキ圧
R 制御シーケンス
PR 制御シーケンス用ブレーキ圧
SR 制御シーケンス信号
tc クラッチ接続プロセス時間長
tcs 標準的なクラッチ接続プロセス時間長
t 時間
v 走行速度
Va 前車軸
v_tres 限界走行速度
μ_tres 限界粘着係数
Claims (26)
- 車両(1)の発進プロセスを制御する方法において、少なくとも、
a)制御シーケンス(R)を作動して、制御シーケンス信号(SR)をセットする工程と、
b)最大エンジン駆動モーメント(M4_max)を定義する工程と、
c)発進プロセスに関する走行要求を検知した場合に、
c1)制御シーケンスが停止している場合に規定される標準的なクラッチ接続プロセス時間長(tcs)よりも長いクラッチ接続プロセス時間長(tc)によってクラッチ・変速機ユニット(6)を駆動する工程と、
c2)駆動される車輪(4a,4b)の車輪速度(n4a,n4b)を検出して、少なくとも被動軸(9)に対する出力駆動モーメント(M9)を設定することにより、駆動される車輪(4a,4b)の車輪スリップ(ms)を制御する工程と、
c3)車輪スリップ(ms)と走行速度(v)に応じて、最大エンジン駆動モーメント(M4_max)を改めて定義する工程と、
d)駆動力(Fa)の最大値(Fa,max)及び/又は限界粘着係数(μ_tres)及び/又は限界走行速度(v_tres)に到達した場合に、坂道で車輪の回転を伴うスリップが発生することがないように発進プロセスの制御シーケンス(R)を停止して、制御シーケンス信号(SR)をリセットする工程と、
を有する方法。 - 前記の駆動される車輪(4a,4b)の車輪速度(n4a,n4b)と駆動されない車輪(3)の車輪速度(n3)の測定及び駆動モーメント(9)の設定による駆動される車輪(4a,4b)の車輪スリップ(ms)の制御が、少なくとも1つのクラッチ・変速機ユニット(6)を駆動する工程(St4)を有することを特徴とする請求項1に記載の方法。
- 前記のクラッチ・変速機ユニット(6)を駆動する場合に、出力駆動モーメント(M9)を設定するために、時間(t)又は駆動される車輪(4a,4b)の車輪速度(n4)に応じたランプ関数に基づき、クラッチ(6a)が投入されることを特徴とする請求項2に記載の方法。
- 前記の制御シーケンス(R)の作動後に、クラッチ・変速機ユニット(6)がクラッチ(6a)を解除することを特徴とする請求項1から3までのいずれか一つに記載の方法。
- 前記の車輪スリップ(ms)の制御の前に、
a1)車両(1)の駆動される車輪(4a,4b)の車輪ブレーキ(14a,14b)に制御シーケンス用ブレーキ圧(PR)を加える工程が規定されるとともに、
前記の駆動される車輪の車輪スリップ(ms)を制御する工程c2)の後に、
c2a)駆動される車輪(4a,4b)の車輪ブレーキ(14a,14b)に対するブレーキ圧(P)を低減する工程が規定される、
ことを特徴とする請求項1から4までのいずれか一つに記載の方法。 - 前記の駆動される車輪(4a,4b)の車輪ブレーキ(14a,14b)に制御シーケンス用ブレーキ圧(PR)を加える前に、駆動される車輪(4a,4b)が停止状態となるように、ブレーキ圧(P)が増大されることを特徴とする請求項1から5までのいずれか一つに記載の方法。
- 工程c2)において、被動軸(9)に対する出力駆動モーメント(M9)の設定が、少なくとも1つのクラッチ・変速機ユニット(6)の駆動によって行なわれることを特徴とする請求項1から6までのいずれか一つに記載の方法。
- 前記の出力駆動モーメント(M9)の設定により車輪スリップ(ms)を制御する場合に、クラッチ・変速機ユニット(6)に加えて、エンジン(5)が駆動されることを特徴とする請求項1から7までのいずれか一つに記載の方法。
- 前記の出力駆動モーメント(M9)の設定により車輪スリップ(ms)を制御する場合に、クラッチ・変速機ユニット(6)に加えて、駆動される車輪(4a,4b)のブレーキ圧(P)が制御されることを特徴とする請求項1から8までのいずれか一つに記載の方法。
- 前記の駆動される車輪(4a,4b)のブレーキ圧(P4a,P4b)の制御が、が、時間(t)又は車輪速度(n4a,n4b)に応じて実行されることを特徴とする請求項9に記載の方法。
- 第一の駆動される車輪(4a)において、より大きなスリップ(ms)を検出した場合に、同じ車軸の他方の駆動される車輪(4b)におけるブレーキ圧(P)が低下されることを特徴とする請求項1から10までのいずれか一つに記載の方法。
- 前記の制御シーケンス(R)の作動が、運転者により作動信号(S2)が入力された場合に実行されることを特徴とする請求項1から11までのいずれか一つに記載の方法。
- 前記の制御シーケンス(R)の作動が、検出された車両状態データに応じた判定基準(K1)である、
発進プロセスに関する運転者要求が出現することと、
車輪スリップ(ms)が、定義された車輪スリップ限界値(ms_max)よりも大きいことと、
粘着係数(μ)が小さいことと、
の中の少なくとも一つが満たされた場合に実行されることを特徴とする請求項1から12までのいずれか一つに記載の方法。 - 走行路(2)に伝達可能な駆動力(Fa)が、最も時間的に近い制動プロセスのスリップ(ms)又は最も時間的に近い制動・加速プロセスのスリップ(ms)に基づき算出されることを特徴とする請求項13に記載の方法。
- 前記の発進プロセスを制御する工程c2)において、最大粘着係数(μ_tres)を生じさせるスリップ(ms)を設定するために、保存された粘着係数対スリップ曲線が用いられることを特徴とする請求項1から14までのいずれか一つに記載の方法。
- 前記の最大エンジン駆動モーメント(M4_max)を定義する工程b)及び/又は最大エンジン駆動モーメント(M4_max)を改めて定義する工程c3)において、駆動される車輪(4a,4b)の軸荷重データを用いるとともに、駆動軸(Ha)に既知の駆動モーメントを投入した場合に発生するスリップ(ms)を検出することによって、駆動される車輪(4a,4b)と走行路(2)の間の粘着係数(μ)が算出されることを特徴とする請求項1から15までのいずれか一つに記載の方法。
- 前記の制御シーケンス信号(SR)をセットする場合の限界値(μ_tres,v_tres)が制御シーケンス信号(SR)をセットしない場合の限界値よりも小さいことを特徴とする請求項1から16までのいずれか一つに記載の方法。
- 制御シーケンス(R)を停止して、制御シーケンス信号(SR)をリセットするための限界値(μ_tres,v_tres)が限界粘着係数(μ_tres)及び/又は限界走行速度(v_tres)であることを特徴とする請求項1から17までのいずれか一つに記載の方法。
- 請求項1~18のいずれか1項に記載の方法によって、車両(1)の発進プロセスを開ループ制御又は閉ループ制御するための走行ダイナミックシステム(7)において、
車両(1)の駆動される車輪(4a,4b)の車輪速度信号(n4a,n4b)を出力する車輪回転数センサー(15a,15b)と、
アクセルペダル信号(S3)と車輪速度信号(n4a,n4b)を受信して、車両(1)の駆動ユニット(5,6)に要求信号(S4,S5)を出力する走行ダイナミック制御機器(16)であって、少なくとも前記の工程a),c),c1),c2),c3),d)を実行するように構成された走行ダイナミック制御機器(16)と、
を有する走行ダイナミックシステム。 - 前記の走行ダイナミック制御機器(16)が、変速機制御機器(11)への変速機制御要求信号(S4)の出力及び/又はエンジン制御ユニット(10)へのエンジンモーメント要求信号(S5)の出力を実行するように構成されていることを特徴とする請求項19に記載の走行ダイナミックシステム(7)。
- 前記の走行ダイナミック制御機器(16)が、ブレーキ制御機器(12)にATC要求信号(S6)を出力するように構成されていることを特徴とする請求項19又は20に記載の走行ダイナミックシステム(7)。
- 駆動される車輪(4a,4b)の車輪ブレーキ(14a,14b)が常用ブレーキの一部及び/又は駐車ブレーキであることを特徴とする請求項19から21までのいずれか一つに記載の走行ダイナミックシステム(7)。
- 前記の車輪回転数センサー(15a,15b)が能動的な車輪回転数センサー(15a,15b)であることを特徴とする請求項19から22までのいずれか一つに記載の走行ダイナミックシステム(7)。
- 前記の駆動される車輪(4a,4b)のブレーキ圧(P4a,P4b)の制御が、ブレーキ圧(P4a,P4b)の低減によってなされることを特徴とする請求項10に記載の方法。
- 前記の制御シーケンス(R)の作動が、操作機器(18)の操作によってなされることを特徴とする請求項12に記載の方法。
- 車両(1)が商用車(1)であることを特徴とする請求項19に記載の走行ダイナミックシステム(7)。
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PCT/EP2018/074177 WO2019105618A1 (de) | 2017-11-30 | 2018-09-07 | Verfahren und fahrdynamik-system zur regelung eines anfahrvorganges eines fahrzeugs |
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