Hydraulic control device and driving force distribution device for four-wheel drive vehicle provided with the same
    4.
    发明授权
    Hydraulic control device and driving force distribution device for four-wheel drive vehicle provided with the same 有权
    液压控制装置和驱动力分配装置的四轮驱动车辆配备

    公开(公告)号:US09377063B2

    公开(公告)日:2016-06-28

    申请号:US14767164

    申请日:2014-01-29

    Inventor: Hiroki Yoshino

    Abstract: The hydraulic control device includes a hydraulic fluid temperature estimation means for estimating the temperature of the hydraulic fluid supplied to the hydraulic clutch (actuator). The hydraulic fluid temperature estimation means calculates an output of logistic regression from an integrated value of driving currents and an average value of driving voltage of the electric motor. If the calculated output of the logistic regression is equal to or more than a first threshold value, the hydraulic fluid estimation means calculates a posteriori probability from such output. If the calculated posteriori probability is equal to or more than the second threshold larger than the first threshold value, the hydraulic fluid temperature estimation means determines the posteriori probability to be a final determination result, thereby determining the temperature of the hydraulic fluid to be a predetermined temperature.

    Abstract translation: 液压控制装置包括用于估计供给到液压离合器(致动器)的液压流体的温度的液压流体温度估计装置。 液压流体温度推定装置根据驱动电流的积分值和电动机的驱动电压的平均值来计算逻辑回归的输出。 如果逻辑回归的计算输出等于或大于第一阈值,则液压流体估计装置从该输出计算后验概率。 如果计算出的后验概率等于或大于大于第一阈值的第二阈值,则液压流体温度估计装置将后验概率确定为最终确定结果,从而将液压流体的温度确定为预定的 温度。

    Adaptive control of a flow control solenoid valve
    5.
    发明授权
    Adaptive control of a flow control solenoid valve 有权
    流量控制电磁阀的自适应控制

    公开(公告)号:US09188221B2

    公开(公告)日:2015-11-17

    申请号:US14185236

    申请日:2014-02-20

    Abstract: A vehicle includes an engine, first clutch, transmission, and controller. The transmission includes a gearbox, position sensors, and a fluid circuit. The gearbox contains a second clutch. The fluid circuit includes a pump and a flow control solenoid valve. The controller opens the valve via flow control signals to allow fluid to pass into or from the particular clutch it feeds. The controller executes steps of a method to determine an actual flow rate through the valve as the clutch moves, and also calculates a compensation scale factor as a ratio of the commanded and actual flow rates. The controller modifies the flow control signals in a subsequent clutch actuation using the compensation scale factor, such as by multiplying a commanded flow rate corresponding to the flow control signals by the compensation scale factor. A system includes rotatable members connected by a clutch, the controller, valve, and position sensor.

    Abstract translation: 车辆包括发动机,第一离合器,变速器和控制器。 变速器包括齿轮箱,位置传感器和流体回路。 变速箱包含第二离合器。 流体回路包括泵和流量控制电磁阀。 控制器通过流量控制信号打开阀门,以使流体进入或从其进给的特定离合器进入。 控制器执行一种方法的步骤,以确定当离合器移动时通过阀的实际流量,并且还计算作为指令和实际流量之比的补偿比例因子。 控制器使用补偿比例因子来修改后续离合器致动中的流量控制信号,例如通过将与流量控制信号相对应的指令流量乘以补偿比例因子。 系统包括通过离合器,控制器,阀和位置传感器连接的可旋转构件。

Patent Agency Ranking