Method for limiting clutch torque to reduce high MU wheel slip

    公开(公告)号:US10029566B2

    公开(公告)日:2018-07-24

    申请号:US15027939

    申请日:2014-10-08

    Abstract: A method for limiting the amount of torque biased to a high mu wheel of a vehicle comprises processing clutch torque data to determine an electronic limited slip differential clutch torque limit, processing wheel speed data to generate mu slip data, comparing the generated mu slip data to threshold mu slip data. When the generated mu slip data is greater than the threshold mu slip data, the method comprises reducing the electronic limited slip differential clutch torque limit by a predetermined ratio.

    Method and apparatus for real time estimation of road surface friction coefficient
    4.
    发明授权
    Method and apparatus for real time estimation of road surface friction coefficient 有权
    实时估计路面摩擦系数的方法和装置

    公开(公告)号:US08914213B2

    公开(公告)日:2014-12-16

    申请号:US13979996

    申请日:2013-03-12

    Abstract: A computer program product, a method and an apparatus for detection of road surface friction coefficient for vehicle stability control are disclosed. The computer program product comprises stored instructions for receiving detected vehicle parameters from a vehicle; calculating a lookup value based on the detected vehicle parameters, the calculating comprising an recursive least square estimation; retrieving a road surface friction coefficient from a lookup table by matching the calculated lookup value to the road surface friction coefficient stored in the lookup table; calculating adjustments to the vehicle using the road surface friction coefficient; and outputting the adjustments to a vehicle control system for execution.

    Abstract translation: 公开了一种用于检测车辆稳定性控制的路面摩擦系数的计算机程序产品,方法和装置。 计算机程序产品包括用于从车辆接收检测到的车辆参数的存储指令; 基于检测到的车辆参数来计算查找值,所述计算包括递归最小二乘估计; 通过将计算的查找值与存储在查找表中的路面摩擦系数进行匹配来从查找表获取路面摩擦系数; 使用路面摩擦系数计算车辆调整; 并将所述调整输出到车辆控制系统以进行执行。

    Method and apparatus for real time estimation of road surface friction coefficient

    公开(公告)号:US08868310B2

    公开(公告)日:2014-10-21

    申请号:US13979996

    申请日:2013-03-12

    Abstract: A computer program product, a method and an apparatus for detection of road surface friction coefficient for vehicle stability control are disclosed. The computer program product comprises stored instructions for receiving detected vehicle parameters from a vehicle; calculating a lookup value based on the detected vehicle parameters, the calculating comprising an recursive least square estimation; retrieving a road surface friction coefficient from a lookup table by matching the calculated lookup value to the road surface friction coefficient stored in the lookup table; calculating adjustments to the vehicle using the road surface friction coefficient; and outputting the adjustments to a vehicle control system for execution.

    METHOD AND APPARATUS FOR REAL TIME ESTIMATION OF ROAD SURFACE FRICTION COEFFICIENT
    6.
    发明申请
    METHOD AND APPARATUS FOR REAL TIME ESTIMATION OF ROAD SURFACE FRICTION COEFFICIENT 有权
    道路表面摩擦系数实时估计的方法和装置

    公开(公告)号:US20140114547A1

    公开(公告)日:2014-04-24

    申请号:US13979996

    申请日:2013-03-12

    Abstract: A computer program product, a method and an apparatus for detection of road surface friction coefficient for vehicle stability control are disclosed. The computer program product comprises stored instructions for receiving detected vehicle parameters from a vehicle; calculating a lookup value based on the detected vehicle parameters, the calculating comprising an recursive least square estimation; retrieving a road surface friction coefficient from a lookup table by matching the calculated lookup value to the road surface friction coefficient stored in the lookup table; calculating adjustments to the vehicle using the road surface friction coefficient; and outputting the adjustments to a vehicle control system for execution.

    Abstract translation: 公开了一种用于检测车辆稳定性控制的路面摩擦系数的计算机程序产品,方法和装置。 计算机程序产品包括用于从车辆接收检测到的车辆参数的存储指令; 基于检测到的车辆参数来计算查找值,所述计算包括递归最小二乘估计; 通过将计算的查找值与存储在查找表中的路面摩擦系数进行匹配来从查找表获取路面摩擦系数; 使用路面摩擦系数计算车辆调整; 并将所述调整输出到车辆控制系统以进行执行。

    System and method for clutch pressure control
    8.
    发明授权
    System and method for clutch pressure control 有权
    离合器压力控制系统和方法

    公开(公告)号:US09388866B2

    公开(公告)日:2016-07-12

    申请号:US14775468

    申请日:2014-03-10

    Abstract: A clutch system comprises a hydraulic control circuit for controlling a hydraulic system. The hydraulic control circuit comprises processor-executable control instructions to perform a method for controlling hydraulic pressure. The method comprises receiving a target hydraulic pressure. The method generates and outputs pressure control valve commands based on a detected current hydraulic pressure, a detected temperature, and the target hydraulic pressure by implementing proportional integral derivative (PID) calculations and sliding mode calculations while carrying out a closed loop pressure control. The method converts the target hydraulic pressure into motor speed control commands and into motor direct current commands by implementing a linear quadratic regulator (LQR) calculation while carrying out a closed loop speed control. The method controls the electric motor using the motor direct current commands. And, the method controls the pressure control valve by using the pressure control valve commands.

    Abstract translation: 离合器系统包括用于控制液压系统的液压控制回路。 液压控制电路包括执行控制液压方法的处理器可执行控制指令。 该方法包括接收目标液压。 该方法通过在执行闭环压力控制的同时实现比例积分微分(PID)计算和滑动模式计算,基于检测到的当前液压,检测温度和目标液压产生并输出压力控制阀命令。 该方法通过在执行闭环速度控制时实现线性二次调节器(LQR)计算,将目标液压转换为电机速度控制命令和电机直流指令。 该方法使用电机直流指令控制电动机。 并且,该方法通过使用压力控制阀命令来控制压力控制阀。

    System and Method for Clutch Pressure Control
    9.
    发明申请
    System and Method for Clutch Pressure Control 有权
    离合器压力控制系统与方法

    公开(公告)号:US20160069402A1

    公开(公告)日:2016-03-10

    申请号:US14775468

    申请日:2014-03-10

    Abstract: A clutch system comprises a hydraulic control circuit for controlling a hydraulic system. The hydraulic control circuit comprises processor-executable control instructions to perform a method for controlling hydraulic pressure. The method comprises receiving a target hydraulic pressure. The method generates and outputs pressure control valve commands based on a detected current hydraulic pressure, a detected temperature, and the target hydraulic pressure by implementing proportional integral derivative (PID) calculations and sliding mode calculations while carrying out a closed loop pressure control. The method converts the target hydraulic pressure into motor speed control commands and into motor direct current commands by implementing a linear quadratic regulator (LQR) calculation while carrying out a closed loop speed control. The method controls the electric motor using the motor direct current commands. And, the method controls the pressure control valve by using the pressure control valve commands.

    Abstract translation: 离合器系统包括用于控制液压系统的液压控制回路。 液压控制电路包括执行控制液压方法的处理器可执行控制指令。 该方法包括接收目标液压。 该方法通过在执行闭环压力控制的同时实现比例积分微分(PID)计算和滑动模式计算,基于检测到的当前液压,检测温度和目标液压产生并输出压力控制阀命令。 该方法通过在执行闭环速度控制时实现线性二次调节器(LQR)计算,将目标液压转换为电机速度控制命令和电机直流指令。 该方法使用电机直流指令控制电动机。 并且,该方法通过使用压力控制阀命令来控制压力控制阀。

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