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    • 9. 发明公开
    • Vehicle dynamic control system
    • Kraftfahrzeug- Dynamiksteuersystem
    • EP0941902A2
    • 1999-09-15
    • EP99301902.5
    • 1999-03-12
    • FUJI JUKOGYO KABUSHIKI KAISHA
    • Matsuno, KojiMatsuura, Munenori
    • B60T7/12
    • B60Q9/00B60T8/1755B60T2260/04B60W10/04B60W10/06B60W10/10B60W10/184B60W30/18172B60W40/072B60W40/076B60W50/14B60W2050/0051B60W2050/0071B60W2510/182B60W2520/10B60W2520/105B60W2520/125B60W2550/402
    • Recognizing curve geometry, judgement accuracy on over speed is improved with minimal increase of calculation load, even when a road to an objective curve is not a straight line.
      The standard deceleration calculator 35 calculates a standard deceleration from road surface friction coefficient and road slope. The permissible access speed calculator 39 calculates a permissible access speed from permissible lateral acceleration based on road geometry and road surface friction coefficient. The equivalent linear distance calculator 41 calculates an equivalent linear distance converting winding part of a road to the objective curve into an equivalent straight line. The passing judgement 43 compares a required deceleration, which is determined based on the present vehicle speed, the permissible access speed and the equivalent linear distance, with a warning deceleration and a forced deceleration which are calculated from the standard deceleration. According to comparison result, the warning deceleration controller 44 carries out warning control through the display 27 and loudspeaker 28 and forced deceleration control by the engine control unit 24, the transmission control unit 25 and the brake control unit 26.
    • 识别曲线几何,即使当到客观曲线的道路不是直线时,也可以最小化计算负荷的增加,提高超速判定精度。 标准减速度计算器35计算路面摩擦系数和道路坡度的标准减速度。 允许访问速度计算器39基于道路几何形状和路面摩擦系数来计算从允许的横向加速度的允许访问速度。 等效线性距离计算器41计算到目标曲线的道路的等效线性距离转换绕组部分为等效直线。 通过判定部43根据当前车速,允许的存取速度和等效的线性距离来确定所需的减速度,并根据标准减速度计算出警告减速度和强制减速度。 根据比较结果,警告减速控制器44通过显示器27和扬声器28执行警告控制,并由发动机控制单元24,变速器控制单元25和制动控制单元26进行强制减速控制。