PROBLEM TO BE SOLVED: To achieve both of stable vehicle stop holding during vehicle stop holding control and improvement of brake pedal operation feeling.SOLUTION: When an ECU starts vehicle stop holding control, the ECU performs low-pass filter processing to a sensor signal detected by a master cylinder pressure sensor using two kinds of cut off frequencies, and calculates two liquid pressure detection values Pmfc1, Pmfc2 (S21). The ECU calculates change gradient A of the master cylinder pressure Pm (S22), and when a magnitude (|A|) of the change gradient A is smaller than a reference gradient Aref, sets the first liquid pressure detection value Pmfc1 as the master cylinder pressure Pm in present calculation, and when the magnitude (|A|) of the change gradient A is equal to or more than the reference gradient Aref, sets the second liquid pressure detection value Pmfc2 as the master cylinder pressure Pm in present calculation (S23-S25).

    【課題】停車保持制御中における安定した停車保持と、ブレーキペダル操作フィーリングの向上とを両立させる。【解決手段】ECUは、停車保持制御を開始すると、マスタシリンダ圧センサにより検出されるセンサ信号を2通りのカットオフ周波数を使ってローパスフィルタ処理を施して、2つの液圧検出値Pmfc1,Pmfc2を算出する(S21)。ECUは、マスタシリンダ圧Pmの変化勾配Aを演算し(S22)、変化勾配Aの大きさ(|A|)が基準勾配Arefよりも小さい場合には、第1液圧検出値Pmfc1を今回の演算時におけるマスタシリンダ圧Pmに設定し、変化勾配Aの大きさ(|A|)が基準勾配Aref以上である場合には、第2液圧検出値Pmfc1を今回の演算時におけるマスタシリンダ圧Pmに設定する(S23〜S25)。【選択図】図4


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    Title :

    VEHICLE BRAKE CONTROLLER


    Additional title:

    車両のブレーキ制御装置


    Contributors:

    Publication date :

    2015-09-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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