Model-based control of an automatic transmission power-on downshift
    1.
    发明授权
    Model-based control of an automatic transmission power-on downshift 有权
    基于型号的自动变速箱控制开机降档

    公开(公告)号:US06415213B1

    公开(公告)日:2002-07-02

    申请号:US09574929

    申请日:2000-05-19

    IPC分类号: G06F700

    摘要: An improved control for an automatic transmission power-on downshift, wherein a dynamic model of the transmission is used to schedule the on-coming and off-going clutch pressures based on the transmission input torque and a desired trajectory of the input shaft during the shift. The shift is initiated with the off-going clutch by using the dynamic model achieve consistent initiation of clutch slippage, and to conform the input speed to the desired trajectory. When the input speed nears a synchronization speed for the target speed ratio, the dynamic model is used to engage the on-coming clutch at a rate based on the input torque while maintaining the input speed in synchronism with the target speed ratio. As a result, the control responds appropriately to dynamic changes in input torque, the input speed more accurately tracks the desired trajectory, and the shifts are completed at or near synchronism. Additionally, scheduling the clutch pressures based on the dynamic model achieves more consistent shift feel and improved adaptability to different powertrain and vehicle-type configurations while reducing the number of calibrated parameters requiring adaptive correction.

    摘要翻译: 用于自动变速器开机降档的改进的控制,其中使用变速器的动态模型来基于变速器输入转矩和变速器期间的输入轴的期望轨迹来安排接近和离开的离合器压力 。 通过使用动态模型实现离合器打滑的一致启动并使输入速度符合期望的轨迹,该离合器由离合离合器开始。 当输入速度接近于目标速度比的同步速度时,动态模型用于以与目标速度比同步地保持输入速度的方式基于输入转矩的速率接合来回离合器。 结果,该控制适当地响应于输入转矩的动态变化,输入速度更准确地跟踪期望的轨迹,并且在同步或接近同步完成位移。 另外,基于动态模型安排离合器压力可实现更一致的换档感觉,并提高对不同动力系和车型配置的适应性,同时减少需要自适应校正的校准参数数量。

    Model-based on-coming clutch pressure control for an automatic transmission upshift
    2.
    发明授权
    Model-based on-coming clutch pressure control for an automatic transmission upshift 有权
    用于自动变速器升档的基于型号的即将离合器压力控制

    公开(公告)号:US06332860B1

    公开(公告)日:2001-12-25

    申请号:US09528609

    申请日:2000-03-20

    IPC分类号: B60K4106

    摘要: An improved control for an automatic transmission upshift, wherein the on-coming clutch pressure (Ponc) is scheduled during the torque and inertia phases of the shift in accordance with the summation of feed-forward and feed-back control terms, the feed-forward control term being developed using an inverse dynamic model of the transmission. The feed-forward control term is determined by developing a desired acceleration trajectory of the input shaft, and periodically applying the acceleration trajectory to the inverse dynamic model to obtain an estimate of the required on-coming clutch pressure, given the transmission input torque. The feed-back control term is based on a comparison of the expected input speed response with the actual input speed response, and corrects for modeling errors in the feed-forward control, providing disturbance rejection and improved command following. Additionally, the closed-loop feedback error is used to enable adaptive correction of the feed-forward control so that the estimated on-coming clutch pressure more nearly produces the commanded input shaft acceleration. Controlling the input shaft acceleration in this manner achieves more consistent shift feel and energy dissipation in the on-coming clutch, with less intensive calibration effort and improved adaptability to different powertrain and vehicle-type configurations.

    摘要翻译: 一种用于自动变速器升档的改进的控制,其中根据前馈和反馈控制项的总和,前进离合器压力(Ponc)在变速的转矩和惯性阶段期间被调度,前馈 控制项正在使用传输的逆动力学模型来开发。 前馈控制项是通过产生输入轴的所需加速度轨迹来确定的,并且在给定传动输入转矩的情况下,周期性地将加速度轨迹应用于逆动力学模型以获得所需要的离合器压力的估计。 反馈控制项基于预期输入速度响应与实际输入速度响应的比较,并且校正前馈控制中的建模误差,提供干扰抑制和改进的命令跟随。 另外,闭环反馈误差被用于使得前馈控制的自适应校正,使得估计的接通离合器压力更接近地产生指令的输入轴加速度。 以这种方式控制输入轴的加速度,可以实现更新一致的离合器的换档感觉和能量消耗,同时具有较少的精确校准工作量,并提高了对不同动力系和车辆配置的适应性。

    Adaptive on-coming clutch fill control for an automatic transmission
    3.
    发明授权
    Adaptive on-coming clutch fill control for an automatic transmission 有权
    用于自动变速器的自适应进场离合器填充控制

    公开(公告)号:US06292732B1

    公开(公告)日:2001-09-18

    申请号:US09566713

    申请日:2000-05-09

    IPC分类号: G06F1700

    摘要: 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.

    摘要翻译: 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。

    Force motor current control for an electronically controlled automatic transmission
    4.
    发明授权
    Force motor current control for an electronically controlled automatic transmission 有权
    强制电动机电流控制用于电子控制的自动变速器

    公开(公告)号:US06262556B1

    公开(公告)日:2001-07-17

    申请号:US09571118

    申请日:2000-05-12

    IPC分类号: H02P528

    CPC分类号: F16H61/0251 F16H2061/0258

    摘要: An improved force motor current control including feed-forward and feed-back control terms summed to determine a force motor activation for achieving a current command. The feed-forward control term estimates the force motor activation required to achieve the current command, based on the force motor temperature, the system voltage and a model of the force motor circuit. The feed-back control term compares an expected response to the actual response and develops a control term that corrects for modeling errors, providing disturbance rejection and improved command following. The closed-loop feedback error is used to enable adaptive correction of the feed-forward control so that the estimated force motor activation more nearly produces the commanded current.

    摘要翻译: 改进的电动机电流控制包括前馈和反馈控制项相加,以确定用于实现电流指令的力马达启动。 前馈控制项基于力马达温度,系统电压和力马达电路的型号来估计实现电流指令所需的力马达启动。 反馈控制项将预期响应与实际响应进行比较,并开发出校正建模误差的控制项,提供干扰抑制和改进的命令追踪。 使用闭环反馈误差来实现前馈控制的自适应校正,使得估计的力马达激活更接近地产生指令电流。

    Flow-based on-coming clutch fill control for an automatic transmission
    5.
    发明授权
    Flow-based on-coming clutch fill control for an automatic transmission 有权
    用于自动变速器的基于流量的即将离合器填充控制

    公开(公告)号:US06285942B1

    公开(公告)日:2001-09-04

    申请号:US09531848

    申请日:2000-03-20

    IPC分类号: G06F1700

    摘要: An improved shift control for a hydraulic automatic transmission in which the apply chamber of an on-coming clutch is filled in the preparation phase of the shift using a hydraulic flow rate model to estimate the volume of hydraulic fluid supplied to the apply chamber. In an initial portion of the fill interval, fluid is supplied to the apply chamber at a first elevated pressure, while continuously updating the fluid volume estimate. When the remaining un-filled volume of the apply chamber reaches a reference volume, the supply pressure is reduced to a second pressure at which the next phase of the shift is to be carried out. When the chamber volume is filled, the torque capacity of the clutch rises to a level corresponding to the second pressure, and the next phase of the shift automatically ensues.

    摘要翻译: 一种用于液压自动变速器的改进的变速控制装置,其中使用液压流量模型将待命离合器的施加室填充在变速器的准备阶段,以估计供给到施加室的液压流体的体积。 在填充间隔的初始部分中,在连续更新流体体积估计的同时,以第一升高的压力将流体供应到施用室。 当施加室的剩余未填充体积达到参考体积时,供应压力降低到要进行下一个相移阶段的第二压力。 当室容积填充时,离合器的扭矩容量上升到与第二压力相对应的水平,并且自动地进行下一阶段的换档。

    Model-based transmission upshift control with engine torque management
    6.
    发明授权
    Model-based transmission upshift control with engine torque management 有权
    基于型号的变速箱升档控制与发动机转矩管理

    公开(公告)号:US06364811B1

    公开(公告)日:2002-04-02

    申请号:US09598283

    申请日:2000-06-22

    IPC分类号: F16H6104

    摘要: 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.

    摘要翻译: 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。

    Near-zero speed estimation method for a pulse counting speed calculation
    7.
    发明授权
    Near-zero speed estimation method for a pulse counting speed calculation 有权
    用于脉冲计数速度计算的近零速度估计方法

    公开(公告)号:US06289072B1

    公开(公告)日:2001-09-11

    申请号:US09517102

    申请日:2000-03-07

    IPC分类号: G07C300

    CPC分类号: G01P3/489

    摘要: An improved speed indication method for a sensor that develops one or more electrical pulses per unit movement of a movable part, wherein the indicated speed is based on the number of speed pulses generated per unit time, but is constrained by a limit function based on the time elapsed without the generation of a speed pulse. When the pulse generation rate falls below the update rate of the speed indication, a maximum possible speed based on the duration of the “no pulse interval” is computed, and the indicated speed is reduced based on the computed maximum. When the next pulse occurs, the speed indication is updated based on the lower of a new speed calculation and the computed maximum speed. If speed pulses continue to be received, the computed maximum is no longer used as a limit, and the speed indication is updated in accordance with the pulse based speed calculation. As a result, the indicated speed provides a smoothly varying and more accurate representation of the shaft speed at very low speeds, enabling more accurate low speed control.

    摘要翻译: 一种用于传感器的改进的速度指示方法,该传感器在可移动部件的每单位移动中产生一个或多个电脉冲,其中所指示的速度基于每单位时间产生的速度脉冲的数量,但是受限于基于 在没有产生速度脉冲的情况下经过时间。 当脉冲产生速率低于速度指示的更新速率时,计算基于“无脉冲间隔”的持续时间的最大可能速度,并且基于所计算的最大值来指示速度降低。 当发生下一个脉冲时,基于新速度计算和计算出的最大速度的较低值来更新速度指示。 如果继续接收速度脉冲,则计算出的最大值不再用作极限,并且根据基于脉冲的速度计算来更新速度指示。 结果,所指示的速度以非常低的速度提供了轴速度的平滑变化和更准确的表示,从而实现了更精确的低速控制。

    Multi-stage skip downshift control for an automatic transmission
    8.
    发明授权
    Multi-stage skip downshift control for an automatic transmission 有权
    用于自动变速器的多级跳档降档控制

    公开(公告)号:US06656087B1

    公开(公告)日:2003-12-02

    申请号:US10167060

    申请日:2002-06-11

    IPC分类号: B60K4104

    摘要: An improved downshift control for an automatic transmission optimized for sequential shifting achieves skip-downshifting to a target gear by shifting the transmission to neutral and controlling the engine output torque while the transmission is reconfigured to establish the target speed ratio. The engine torque control is designed to allow the transmission input speed to reach the synchronization speed for the target speed ratio at a desired time, and the shift is completed when the transmission input speed actually reaches the synchronization speed. The engine torque control is predicated on a modeled engine torque parameter, and the torque control includes an adaptive parameter for adaptively adjusting the torque control to ensure that the input speed reaches the synchronization speed at the desired time.

    摘要翻译: 用于顺序换档优化的自动变速器的改进的降档控制通过将变速器转换到空档来实现对目标齿轮的跳降降档,并且在重新配置变速器以确定目标速比时控制发动机输出转矩。 发动机转矩控制被设计成允许变速器输入速度在期望的时间达到目​​标速比的同步速度,并且当变速器输入速度实际达到同步速度时,变速完成。 发动机扭矩控制基于建模的发动机转矩参数,并且转矩控制包括用于自适应地调节转矩控制的自适应参数,以确保输入速度在期望时间达到同步速度。

    Engine limit control for closed-throttle transmission shifting
    9.
    发明授权
    Engine limit control for closed-throttle transmission shifting 有权
    发动机限位控制用于闭路节气门传动换档

    公开(公告)号:US06478713B1

    公开(公告)日:2002-11-12

    申请号:US09692809

    申请日:2000-10-23

    IPC分类号: B60K4104

    摘要: An improved engine and transmission control method for coordinated control of closed-throttle transmission shifting, wherein the transmission control provides engine speed and torque rate limits to the engine control based on the shift parameters. The speed and/or torque rate limits come into play if the driver suddenly increases the engine throttle setting. Additionally, in driver requested garage shifts, initiation of the shift is prevented until the engine speed is within the speed limit. Preferably, the engine speed limit is set a calibrated amount above the computed input synchronization speed (SYNC). Alternately, the engine speed limit may be set to a value that limits the energy dissipated in the on-coming clutch to a predetermined value. With either approach, the engine speed and torque limits modify the engine control only to the extent necessary to preserve high shift quality while limiting the on-coming clutch energy dissipation to a safe level.

    摘要翻译: 一种改进的发动机和变速器控制方法,用于协调控制闭路节气门变速器,其中变速器控制基于换档参数为发动机控制提供发动机转速和转矩限制。 如果驾驶员突然增加发动机节气门设定,速度和/或转矩限制就会发挥作用。 另外,在驾驶员要求的车库班次中,防止发生变速,直到发动机速度在速度限制内。 优选地,将发动机速度限制设置为高于所计算的输入同步速度(SYNC)的校准量。 或者,发动机速度限制可以被设定为将在前进离合器中消耗的能量限制到预定值的值。 采用任何一种方法,发动机转速和转矩限制只能在必要的范围内修改发动机控制,以保持高变速质量,同时将即将到来的离合器能量消耗限制在一个安全的水平。

    Electro-hydraulic control with a manual selection valve
    10.
    发明授权
    Electro-hydraulic control with a manual selection valve 有权
    电动液压控制用手动选择阀

    公开(公告)号:US06319164B1

    公开(公告)日:2001-11-20

    申请号:US09577029

    申请日:2000-05-23

    IPC分类号: F16H3100

    摘要: A power transmission includes a plurality of torque transmitting mechanisms controlled by an electro-hydraulic control system to provide a reverse drive ratio, a neutral condition and a plurality of forward drive ratios. The electro-hydraulic control has three shift valves, two variable pressure control valves, and a manual control valve. Each of the shift valves have a hydraulically on position, established by a respective solenoid valve, and a hydraulically off position, established by a spring. The manual control valve is moveable to a neutral condition, a reverse drive condition and a forward drive condition. In each of the positions during a neutral to reverse, neutral to forward, or forward/reverse interchange, the shift valves are conditioned to be hydraulically on thereby permitting the manual control valve to be the controlling valve member for completing the interchange. When the reverse ratio is established, the manual control valve directs fluid pressure from one of the variable pressure control valves to one of the shift valves to assist the respective spring and urge the shift valve to the hydraulically off position. During the reverse ratio, neutral condition and the first forward ratio one of the torque transmitting mechanisms is continually engaged.

    摘要翻译: 动力传动装置包括由电液控制系统控制的多个扭矩传递机构,以提供倒档驱动比,空档状态和多个正向传动比。 电液控制有三个换档阀,两个可变压力控制阀和一个手动控制阀。 每个换档阀具有通过相应的电磁阀建立的液压位置和由弹簧建立的液压关闭位置。 手动控制阀可移动到空档状态,反转驱动状态和正转驱动状态。 在中立到反向,中立到前进或前进/后退交换期间的每个位置中,换档阀被调节为液压,从而允许手动控制阀作为完成交换的控制阀构件。 当反向比建立时,手动控制阀将流体压力从一个可变压力控制阀引导到一个换档阀,以帮助相应的弹簧并将换档阀推动到液压关闭位置。 在反向比期间,中立状态和扭矩传递机构之一的第一前进比例连续接合。