T-S curve correction method for clutch system

    公开(公告)号:US09970492B2

    公开(公告)日:2018-05-15

    申请号:US15351668

    申请日:2016-11-15

    Abstract: A T-S curve correction method for a clutch system may include: detecting differences between actual positions of a clutch in first and second torque regions and a position on a T-S curve; determining whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than a first reference value; determining whether the difference between the actual position in the second torque region and the position on the T-S curve is equal to or less than a third reference value, when the difference of the actual position in the first torque region is equal to or more than the first reference value; and correcting the slope of the T-S curve in the increasing direction, when the difference of the actual position in the second torque region is equal to or less than the third reference value.

    Driving force transmission control system
    7.
    发明授权
    Driving force transmission control system 有权
    驱动力传动控制系统

    公开(公告)号:US09074645B2

    公开(公告)日:2015-07-07

    申请号:US14332694

    申请日:2014-07-16

    Abstract: A driving force transmission control system includes: an electric motor; a multi-disc clutch; a cam mechanism that converts rotation output from the electric motor into cam thrust force that is axial force in the axial direction of the multi-disc clutch; a pressure-conversion mechanism that converts reaction force against the cam thrust force into pressure of a fluid; a pressure sensor that detects the pressure; and a control unit that computes a command value of a current supplied to the electric motor. The control unit stores the pressure of the fluid during disengagement of the multi-disc clutch, and computes the current command value based on the pressure of the fluid to which the reaction force against the cam thrust force has been applied, and the stored pressure of the fluid.

    Abstract translation: 驱动力传递控制系统包括:电动机; 多片离合器; 将来自电动机的旋转输出转换成作为多片式离合器的轴向的轴向力的凸轮推力的凸轮机构; 压力转换机构,其将反作用力相对于凸轮推力转换成流体的压力; 检测压力的压力传感器; 以及控制单元,其计算提供给电动机的电流的指令值。 控制单元在多片离合器分离期间存储流体的压力,并且基于已经施加了反对凸轮推力的反作用力的流体的压力计算电流指令值,并且存储压力 流体。

    CONTROL OF A TRANSMISSION FRICTION ELEMENT USING AN ADAPTIVE TRANSFER FUNCTION
    9.
    发明申请
    CONTROL OF A TRANSMISSION FRICTION ELEMENT USING AN ADAPTIVE TRANSFER FUNCTION 有权
    使用自适应传递函数控制传动摩擦元件

    公开(公告)号:US20140324308A1

    公开(公告)日:2014-10-30

    申请号:US13873423

    申请日:2013-04-30

    Abstract: A transmission clutch control method includes defining a transfer function relating clutch torque to a control signal under transmission operating conditions; determining a target clutch torque for current operating conditions; determining the target control signal from the transfer function to produce target torque at the clutch; correcting clutch torque on the basis of a difference between the target clutch torque and the actual torque at the clutch by adjusting the control signal; calculating actual clutch torque with reference to transmission input torque and transmission output torque; computing a clutch torque error as a difference between calculated clutch torque and the target clutch torque; and repetitively adjusting the transfer function on the basis of the clutch torque error.

    Abstract translation: 传动离合器控制方法包括在传动操作条件下定义与离合器扭矩相关的控制信号的传递函数; 确定当前操作条件的目标离合器扭矩; 从传递函数确定目标控制信号以在离合器处产生目标转矩; 通过调整控制信号,根据目标离合器转矩与离合器的实际转矩之间的差来修正离合器转矩; 参考传动输入扭矩和变速器输出扭矩计算实际离合器扭矩; 计算离合器扭矩误差作为计算的离合器扭矩与目标离合器扭矩之差; 并基于离合器转矩误差重复地调节传递函数。

    Determining oncoming clutch pressure in a transmission
    10.
    发明授权
    Determining oncoming clutch pressure in a transmission 有权
    确定变速器中的离合器压力

    公开(公告)号:US08818663B2

    公开(公告)日:2014-08-26

    申请号:US13557788

    申请日:2012-07-25

    Abstract: Clutch pressure of an oncoming clutch may be determined during an upshift in an automatic transmission by determining when offgoing and oncoming clutches of the transmission near a speed synchronization point. Aboard a vehicle, proportional-integral-derivative (PID) feedback control logic of for the oncoming clutch may be activated via a controller. The controller and the activated PID logic may be used to introduce a calibrated slip error between the rotational speeds of the offgoing and oncoming clutches. Engine speed is then held in a calibrated flare using the PID logic. Oncoming clutch pressure is recorded during the duration of the calibrated flare, and a control action is executed with respect to the transmission using the recorded oncoming clutch pressure, e.g., using recorded PID gains and/or a pressure/torque relationship of the oncoming clutch. A vehicle having an engine, transmission, and controller may use the controller to execute such a method.

    Abstract translation: 离合器离合器的离合器压力可以在自动变速器的升档期间通过确定在速度同步点附近的传动装置和迎面而来的离合器来确定。 在车辆上,对于即将到来的离合器的比例 - 积分微分(PID)反馈控制逻辑可以通过控制器被激活。 控制器和激活的PID逻辑可以用于在离合器和迎面而来的离合器的转速之间引入经校准的滑差误差。 然后使用PID逻辑将发动机速度保持在校准的火炬中。 在校准的火炬持续时间期间记录离合器压力,并且使用记录的即将到来的离合器压力,例如使用记录的PID增益和/或即将到来的离合器的压力/转矩关系来执行关于变速器的控制动作。 具有发动机,变速器和控制器的车辆可以使用控制器来执行这种方法。

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