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    • 3. 发明授权
    • Model-based transmission upshift control with engine torque management
    • 基于型号的变速箱升档控制与发动机转矩管理
    • US06364811B1
    • 2002-04-02
    • US09598283
    • 2000-06-22
    • Gregory A HubbardJeffrey Kurt RundeLarry Theodore NitzTimothy Alan RobinsonTodd M Steinmetz
    • Gregory A HubbardJeffrey Kurt RundeLarry Theodore NitzTimothy Alan RobinsonTodd M Steinmetz
    • F16H6104
    • F16H61/061B60W10/06B60W10/115B60W2710/1016Y02T10/56Y10T477/675Y10T477/6937Y10T477/6939
    • An improved control for an automatic transmission upshift, wherein the engine output torque and on-coming clutch pressure are coordinated during the shift based on an inverse dynamic model of the transmission to achieve a desired output torque trajectory. The desired output torque trajectory is influenced by operator demand, and an initial value of the desired output torque trajectory is used along with the engine output torque to develop an input acceleration trajectory. The inverse dynamic model of the transmission is used (1) to determine an engine torque command that will achieve both the input acceleration trajectory and the desired output torque trajectory, and (2) to determine a feed-forward pressure command for the on-coming clutch that will produce the input acceleration trajectory, given the engine torque command. The desired output torque trajectory and the engine output torque are used to determine the expected input speed, and a feed-back control term based on the deviation of the measured input speed from the expected input speed is used to adjust the on-coming clutch pressure command to account for model errors. Finally, the closed-loop feedback error is used to enable adaptive correction of the feed-forward control so that the feed-forward clutch pressure more nearly produces the commanded input shaft acceleration.
    • 用于自动变速器升档的改进的控制,其中基于变速器的逆动力学模型,在换档期间协调发动机输出扭矩和接通离合器压力,以实现期望的输出转矩轨迹。 期望的输出转矩轨迹受操作者需求的影响,并且使用期望的输出转矩轨迹的初始值以及发动机输出转矩来产生输入加速轨迹。 使用变速器的逆动力学模型(1)来确定将实现输入加速度轨迹和期望输出转矩轨迹的发动机扭矩指令,以及(2)确定用于接下来的前馈压力指令 给定发动机扭矩指令的离合器将产生输入加速度轨迹。 使用期望的输出转矩轨迹和发动机输出转矩来确定预期的输入速度,并且使用基于测量的输入速度与预期输入速度的偏差的反馈控制项来调整接通离合器压力 命令来解释模型错误。 最后,使用闭环反馈误差来实现前馈控制的自适应校正,使得前馈离合器压力更接近地产生指令的输入轴加速度。
    • 4. 发明授权
    • Adaptive on-coming clutch fill control for an automatic transmission
    • 用于自动变速器的自适应进场离合器填充控制
    • US06292732B1
    • 2001-09-18
    • US09566713
    • 2000-05-09
    • Todd M SteinmetzJeffrey Kurt Runde
    • Todd M SteinmetzJeffrey Kurt Runde
    • G06F1700
    • F16H61/061F16H2061/062Y10T477/69379Y10T477/69387
    • An improved on-coming clutch fill control method in which a model of the transmission hydraulic system is used for control purposes to accurately predict the achievement of on-coming clutch torque capacity based on a comparison of the modeled volume of supplied fluid to a reference volume representing the actual volume of the on-coming clutch, and in which the reference volume for each type of shift is adaptively adjusted based on input speed aberrations observed during shifting. If input speed flaring occurs due to an underestimated reference volume, the reference volume is adaptively increased based on the volume of fluid supplied to the on-coming clutch between the initial detection of flaring and a detection of maximum flaring. If the input speed does not flare, but an early pull-down or overlap is detected, the reference volume is adaptively decreased based on the volume of fluid supplied to the on-coming clutch between the initial detection of pull-down or overlap and the expected achievement of on-coming clutch torque capacity.
    • 一种改进的即将到来的离合器填充控制方法,其中使用传动液压系统的模型用于控制目的,以便基于所提供的流体的模型体积与参考体积的比较来精确地预测即将到来的离合器扭矩能力的实现 代表着陆式离合器的实际体积,并且其中根据换挡期间观察到的输入速度像差自适应地调整每种类型的换档的参考体积。 如果由于低估的参考体积而发生输入速度扩张,则基于在初始检测扩口和检测最大扩口之间提供给即将离合器的流体体积,参考体积自适应地增加。 如果输入速度不闪烁,但是检测到早期的下拉或重叠,则基于在初始检测下拉或重叠之间提供给即将离合器的流体体积自适应地降低参考体积, 预期实现即将来临的离合器扭矩能力。
    • 6. 发明授权
    • Off-going clutch control for upshifting of an automatic transmission
    • 用于自动变速器升档的离合器离合器控制
    • US06319172B1
    • 2001-11-20
    • US09524595
    • 2000-03-14
    • Todd M SteinmetzGregory A Hubbard
    • Todd M SteinmetzGregory A Hubbard
    • F16H6104
    • F16H61/061F16H61/08F16H2061/062Y10T477/6937Y10T477/69387
    • An improved transmission upshift control in which the off-going clutch is controlled to emulate the behavior of an ideal free-wheel device to thereby achieve nearly ideal timing of the off-going clutch disengagement relative to the on-coming clutch engagement. During the preparation phase of the shift, the off-going pressure is reduced in proportion to the estimated volume of fluid supplied to the on-coming clutch such that the off-going pressure is at a calibrated value when the on-coming clutch is filled. However, the calibrated value is adjusted upward in direct relation to the transmission input torque above a given level so as to emulate the reaction torque that would be exerted by an ideal free-wheel device for maintaining the current speed ratio. The torque phase of the control commences when the estimated volume indicates that the on-coming clutch is completely filled. At such point, the off-going clutch pressure decreases from the calibrated value at a rate determined as a function of the scheduled on-coming clutch torque to emulate the rate of decay that would occur with an ideal free-wheel device as the on-coming clutch engages. If the confidence level is low, the off-going clutch control parameters are biased to extend the engagement of the off-going clutch. If the extended engagement of the off-going clutch results in a tie-up condition due to engagement of the on-coming clutch, the off-going pressure is quickly released.
    • 改进的变速器升档控制,其中控制脱离离合器以模拟理想的离合器装置的行为,从而实现相对于即将离合器接合的脱离离合器分离的几乎理想的定时。 在换档的准备阶段期间,离开的压力与提供给即将离合器的流体的估计体积成比例地减小,使得当接通的离合器被填充时,脱离压力处于校准值 。 然而,校准值与传动输入扭矩直接相关的方式向上调整到高于给定的水平,以便模拟由理想的剩余轮装置施加的用于维持当前速度比的反作用转矩。 当估计的音量表示即将到来的离合器完全充满时,控制的扭矩相位开始。 在这一点上,脱离离合器压力以校准值以按照预定的接近离合器扭矩的函数确定的速率降低,以模拟在理想的离合器装置中将发生的衰减速率, 离合器啮合。 如果置信水平低,则偏离离合器控制参数被偏置以延长脱离离合器的接合。 如果脱离离合器的延长接合导致由于接合离合器的接合而导致的结合状态,则快速释放脱离的压力。