JP6004195B2 - 車両の車体振動制御装置 - Google Patents
車両の車体振動制御装置 Download PDFInfo
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Description
自動車等の車両における指令駆動力の演算は、マイクロコンピュータのような電子制御装置によって行われ、ノッチフィルタによる指令駆動力の演算は、運転者の過去の要求駆動力、現在の要求駆動力及び過去の指令駆動力に基づいて、所定の時間毎に行われる。よって、フィルタ処理により運転者の要求駆動力がなまされて指令駆動力が生成される。そのため、要求駆動力の変化に対する駆動源の駆動力増減の応答性が低下する。要求駆動力が段差的に増加又は減少する状況に於いては、要求駆動力の変化に対し指令駆動力の変化が遅れることが避けられない。
〔課題を解決するための手段及び発明の効果〕
図1は、本発明による車両の車体振動制御装置10の第一の実施形態を示すブロック図である。図1において、車体振動制御装置10は、車両12に搭載されており、車体(VB)14と、車体14を含む車両12に駆動力を付与する駆動装置(DU)16と、駆動装置16を制御する電子制御装置(ECU)18とを含んでいる。なお、図示の実施形態に於いては、駆動装置16は、エンジン及びトランスミッション(自動変速機、無段変速機又はデュアルクラッチトランスミッション)の組合せであるが、ハイブリッドシステム、電動機の如き他の駆動装置であってもよい。また、電子制御装置18は、例えばマイクロコンピュータの如く演算機能及び記憶機能を備えた任意の電子制御装置であってよい。
yn=anxn+an−1xn−1+an−2xn−2
−bn−1yn−1−bn−2yn−2 …(2)
(A)車両に駆動力を付与しないパーキングポジション(P)又はニュートラルポジション(N)と車両に駆動力を付与するドライブポジション(D)との間にてシフトポジションが変化した。
(B)車両の走行モードが変化した。
(C)シフトポジションがパーキングポジション(P)又はニュートラルポジション(N)である。
この場合には、ステップ20及び60において否定判別が行われる。よって、ステップ90において、修正後の指令駆動力Fdfilaとして指令駆動力Fdfilを示す信号が駆動力制御ブロック22へ出力される。また、この場合には、指令駆動力Fdfil過去の値の影響を受けないので、フィルタのリセットは行われない。
この場合には、ステップ20において肯定判別が行われる。よって、ステップ50において、修正後の指令駆動力Fdfilaとして要求駆動力Fdreqを示す信号が駆動力制御ブロック22へ出力される。よって、車両の駆動力はノッチフィルタ24のフィルタ処理による影響を受けないので、フィルタのリセットは不要であり、フィルタ処理に起因する車両の駆動力の応答性の低下も生じない。
この場合には、ステップ20において否定判別が行われるが、ステップ60において肯定判別が行われる。よって、ステップ70において、ノッチフィルタ24がリセットされ、ステップ90において、修正後の指令駆動力Fdfilaとして指令駆動力Fdfilを示す信号が駆動力制御ブロック22へ出力される。
図6は、本発明による車両の車体振動制御装置10の第二の実施形態において、指令駆動力修正ブロック30により実行される指令駆動力の修正及びフィルタリセットのルーチンの一例を示すフローチャートである。なお、図6において、図4に示されたステップと同一のステップには図4において付されたステップ番号と同一のステップ番号が付されている。
Claims (1)
- 運転者の要求駆動力を演算する要求駆動力演算装置と、車両に駆動力を付与する駆動装置と、指令駆動力に基づいて前記駆動装置を制御する駆動力制御装置と、前記要求駆動力演算装置より要求駆動力を示す信号を受信し、ノッチ周波数が車体の振動の周波数成分を低減するための値に設定されたノッチフィルタであって、前記信号をフィルタ処理し、処理後の信号を前記駆動力制御装置へ指令駆動力を示す信号として出力するノッチフィルタとを有する車両の車体振動制御装置において、
前記ノッチフィルタは、過去の要求駆動力、現在の要求駆動力及び過去の指令駆動力に基づいて、所定の時間毎に指令駆動力を演算し、
前記車体振動制御装置は、シフトポジションセンサからの信号に基づいて、(a)シフトポジションがパーキングポジション及びニュートラルポジションの一方とドライブポジションとの間にて変化した、及び(b)シフトポジションがパーキングポジション及びニュートラルポジションの一方である、の何れかの条件が成立しているか否かの判別により、指令駆動力を前記フィルタ処理の効果が低減された値に修正する必要性があるか否かを判定する判定装置と、前記判定装置により前記必要性があると判定されているときには、指令駆動力を前記フィルタ処理の効果が低減された値に修正する指令駆動力修正装置を有し、
前記指令駆動力修正装置は、前記判定装置により前記必要性がなくなったと判定されたときには、その直後の指令駆動力の演算に際し、過去の要求駆動力及び過去の指令駆動力に代えて現在の要求駆動力を使用して指令駆動力を演算するよう、前記ノッチフィルタを修正し、指令駆動力の演算後に前記ノッチフィルタの修正を解除する
ことを特徴とする車両の車体振動制御装置。
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US14/554,171 US9199523B2 (en) | 2013-11-29 | 2014-11-26 | Vehicle body vibration control device for vehicle |
CN201410710537.7A CN104670241B (zh) | 2013-11-29 | 2014-11-28 | 车辆的车身振动控制装置 |
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