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    Continuously variable transmission clutch control system including special start mode operation
    4.
    发明授权
    Continuously variable transmission clutch control system including special start mode operation 失效
    连续可变变速箱离合器控制系统包括特殊启动模式运行

    公开(公告)号：US5206805A

    公开(公告)日：1993-04-27

    申请号：US377747

    申请日：1989-07-06

    申请人： Werner P. Petzold ,  William P. Umlauf

    发明人： Werner P. Petzold ,  William P. Umlauf

    IPC分类号： B60W10/02 ,  B60W30/18 ,  F16D48/08 ,  F16H61/66 ,  F16H61/662

    CPC分类号： F16H61/66 ,  B60W10/02 ,  B60W10/101 ,  B60W30/18 ,  F16H61/66254 ,  B60W2510/0283 ,  B60W2510/0604 ,  B60W2510/0638 ,  B60W2710/021 ,  B60W2710/1005 ,  F16H63/46

    摘要： The system provides an improved clutch control system for use in a continuously variable transmission system. The system provides for generation of a clutch pressure setpoint to re-engage the clutch during special conditions in which the torque created by the vehicle inertia would tend to drive the engine to an undesirable operating point. Clutch slip speed is monitored as a difference value and integrated to provide a gradually decreasing error signal to return the clutch input speed to the clutch output speed, at which time clutch lockup will occur. Additionally, throttle position is monitored and a maximum torque schedule used to provide a maximum torque signal to prevent driver demand from undesirably racing the engine in similar conditions. A filtered output of the maximum torque schedule provides a pressure setpoint signal representative of actual driver demand which may be added to the clutch slip speed error signal to generate the clutch pressure setpoint. In this fashion, an engine may be loaded by an increase in the clutch pressure at the same time that the clutch input speed is returned to the clutch output speed to restore clutch lock up. Addition of a constant value to the clutch slip speed error signal ensures positive clutch lockup.

    摘要翻译： 该系统提供了一种用于无级变速器系统的改进的离合器控制系统。 该系统提供产生离合器压力设定点以在特定条件下重新接合离合器，在特殊情况下，由车辆惯性产生的扭矩将倾向于将发动机驱动到不期望的操作点。 将离合器滑差速度作为差值进行监控并集成以提供逐渐减小的误差信号，以将离合器输入速度返回到离合器输出速度，此时将发生离合器锁定。 此外，监控节气门位置，并且使用最大扭矩调度表来提供最大转矩信号，以防止驾驶员在类似条件下不期望地使发动机起飞。 最大扭矩计划的过滤输出提供表示实际驾驶员需求的压力设定点信号，其可以被添加到离合器滑差速度误差信号以产生离合器压力设定点。 以这种方式，可以通过增加离合器压力来加载发动机，同时离合器输入速度返回到离合器输出速度以恢复离合器锁定。 为离合器滑差速度误差信号增加一个恒定值可确保离合器锁定正常。

    Temperature compensation technique for a continuously variable transmission control system
    5.
    发明授权
    Temperature compensation technique for a continuously variable transmission control system 失效
    一种无级变速器控制系统的温度补偿技术

    公开(公告)号：US5189611A

    公开(公告)日：1993-02-23

    申请号：US488436

    申请日：1990-02-27

    申请人： Werner P. Petzold ,  William P. Umlauf

    发明人： Werner P. Petzold ,  William P. Umlauf

    IPC分类号： F16H59/72 ,  F16H61/00 ,  F16H61/662

    CPC分类号： F16H61/66254 ,  F16H2061/0078 ,  F16H59/72 ,  Y02T10/84 ,  Y10T477/653

    摘要： Temperature compensation techniques are utilized to provide consistent system response in a continuously variable transmission system or other control system over a range of expected operating temperatures. Variations in the independent transfer functions for various control functions, such as ratio control, line pressure control and clutch control are monitored or measured. Appropriate modifications to system operating parameters are scheduled based upon the measured, simulated or predicted variations in the transfer functions as previously determined. In operation, the disclosed system senses temperature and provides the appropriate compensation and gain parameter modifications in accordance with the selected schedules.

    摘要翻译： 温度补偿技术用于在一系列预期工作温度下在无级变速器系统或其他控制系统中提供一致的系统响应。 监控或测量各种控制功能的独立传递功能的变化，如比率控制，管路压力控制和离合器控制。 基于如先前确定的传递函数中的测量，模拟或预测的变化来调度对系统操作参数的适当修改。 在操作中，所公开的系统感测温度，并根据所选择的时间表提供适当的补偿和增益参数修改。

    Control system for controlling the line pressure in a continuously variable transmission
    6.
    发明授权
    Control system for controlling the line pressure in a continuously variable transmission 失效
    用于控制无级变速器中的管路压力的控制系统

    公开(公告)号：US4982822A

    公开(公告)日：1991-01-08

    申请号：US936527

    申请日：1986-12-01

    申请人： Werner P. Petzold ,  William P. Umlauf

    发明人： Werner P. Petzold ,  William P. Umlauf

    IPC分类号： B60W10/02 ,  B60W30/18 ,  F16H59/06 ,  F16H61/00 ,  F16H61/66 ,  F16H61/662

    CPC分类号： B60W30/18 ,  B60W10/02 ,  B60W10/101 ,  F16H61/66 ,  F16H61/66259 ,  B60W2050/0008 ,  B60W2050/0012 ,  B60W2050/0052 ,  B60W2050/0058 ,  B60W2510/107 ,  B60W2510/1075 ,  B60W2710/1005 ,  F16H63/46 ,  Y10T477/6203

    摘要： A pressure transducer, which senses clutch pressure and effects closed loop clutch control in a continuously variable transmission, is used after the clutch is fully engaged to provide closed loop line pressure control to a desired setpoint, which line pressure regulates the tension on the belt in the transmission. Only a single transducer is needed since there is a known relationship between the clutch and line pressures when the clutch is locked up. Prior to lockup, the line pressure is governed by an open loop controller which establishes the line pressure at a level higher than that called for by the setpoint. This ensures that the line pressure will be high enough to provide the required tension on the belt so that it will not slip. After the clutch is engaged, the closed loop line pressure controller (which includes both the open loop line pressure controller and the closed loop clutch controller) establishes the line pressure at the setpoint. For stable operation, the closed loop controller responds only to relatively slow changes of the setpoint. In response to fast changes, the closed loop controller is made ineffective so that the line pressure will be determined only by the open loop controller and will be greater than the level called for by the setpoint.

    摘要翻译： 在离合器完全接合之后，使用感测离合器压力并实现闭环离合器控制的压力传感器，以提供闭环线路压力控制到期望的设定点，该线路压力调节带上的张力 传输。 只需要一个传感器，因为当离合器被锁定时离合器和管路压力之间存在已知的关系。 在锁定之前，管路压力由开环控制器控制，该控制器将管路压力设置在高于设定值所要求的水平。 这确保线路压力将足够高以在带上提供所需的张力，使得其不会滑动。 在离合器接合之后，闭环线压力控制器（其包括开环管路压力控制器和闭环离合器控制器）建立设定点处的管路压力。 为了稳定运行，闭环控制器只响应设定点相对较慢的变化。 响应快速更改，闭环控制器无效，因此线路压力将仅由开环控制器确定，并将大于设定值所要求的电平。

    Pulse width modulation technique
    7.
    发明授权
    Pulse width modulation technique 失效
    脉宽调制技术

    公开(公告)号：US5144265A

    公开(公告)日：1992-09-01

    申请号：US803173

    申请日：1991-12-05

    申请人： Werner P. Petzold

    发明人： Werner P. Petzold

    IPC分类号： B60W10/02 ,  B60W30/18 ,  F16H61/02 ,  F16H61/662 ,  H03K7/08

    CPC分类号： H03K7/08 ,  B60W10/02 ,  B60W10/10 ,  B60W30/18 ,  B60W30/1819 ,  F16H61/0251 ,  F16H61/66259 ,  B60W2510/0241 ,  B60W2540/10 ,  F16H2061/0255 ,  F16H63/46

    摘要： Improved pulse width modulation technique provides for an increased sampling rate without an increased ON/OFF rate at associated control devices. Both ON/OFF and OFF/ON edges in a PWM signal are modulated. The system then samples at twice the pulse turn-on rate to provide more frequent sampling. System response time may be decreased without an increase in the operating frequency for the associated control device. Particular application of the present invention may be found in continuously variable transmission systems which utilize PWM-controlled electrohydraulic valves for ratio control, line pressure control and clutch control. A system for implementing the PWM signal has a duty-cycle calculator coupled with timing circuits to control input data reading functions and circuit enabling, leading edge and trailing edge regulators and an output pulse generator.

    摘要翻译： 改进的脉冲宽度调制技术提供了增加的采样速率，而不会在相关控制装置处增加ON / OFF速率。 调制PWM信号中的ON / OFF和OFF / ON边沿。 然后系统以两倍的脉冲开启速率进行采样，以提供更频繁的采样。 可以降低系统响应时间，而不会增加相关控制装置的工作频率。 本发明的具体应用可以在使用PWM控制的电动液压阀进行比例控制，管路压力控制和离合器控制的无级变速器系统中找到。 用于实现PWM信号的系统具有与定时电路耦合的占空比计算器，以控制输入数据读取功能和电路使能，前沿和后沿调节器以及输出脉冲发生器。

    Pulse width modulation technique
    8.
    发明授权
    Pulse width modulation technique 失效
    脉宽调制技术

    公开(公告)号：US5115395A

    公开(公告)日：1992-05-19

    申请号：US555715

    申请日：1990-07-19

    申请人： Werner P. Petzold

    发明人： Werner P. Petzold

    IPC分类号： F16D48/02 ,  B60W10/02 ,  B60W30/18 ,  F16H9/00 ,  F16H61/02 ,  F16H61/08 ,  F16H61/662 ,  F16H63/46 ,  G05B11/28 ,  H03K7/08

    CPC分类号： H03K7/08 ,  B60W10/02 ,  B60W10/10 ,  B60W30/18 ,  B60W30/1819 ,  F16H61/0251 ,  F16H61/66259 ,  B60W2510/0241 ,  B60W2540/10 ,  F16H2061/0255 ,  F16H63/46 ,  Y10T477/62429

    摘要： Improved pulse width modulation technique provides for an increased sampling rate without an increased ON/OFF rate at associated control devices. Both ON/OFF and OFF/ON edges in a PWM signal are modulated. The system then samples at twice the pulse turn-on rate to provide more frequent sampling. System response time may be decreased without an increase in the operating frequency for the associated control device. Particular application of the present invention may be found in continuously variable transmission systems which utilize PWM-controlled electohydraulic valves for ratio control, line pressure control and clutch control. A system for implementing the PWM signal has a duty-cycle calculator coupled with timing circuits to control input data reading functions and circuit enabling, leading edge and trailing edge regulators and an output pulse generator.

    摘要翻译： 改进的脉冲宽度调制技术提供了增加的采样速率，而不会在相关控制装置处增加ON / OFF速率。 调制PWM信号中的ON / OFF和OFF / ON边沿。 然后系统以两倍的脉冲开启速率进行采样，以提供更频繁的采样。 可以降低系统响应时间，而不会增加相关控制装置的工作频率。 本发明的具体应用可以在使用PWM控制的电液阀进行比率控制，管路压力控制和离合器控制的无级变速器系统中找到。 用于实现PWM信号的系统具有与定时电路耦合的占空比计算器，以控制输入数据读取功能和电路使能，前沿和后沿调节器以及输出脉冲发生器。

    Electronic control system for automatic transmission
    9.
    发明授权
    Electronic control system for automatic transmission 失效
    自动变速器电子控制系统

    公开(公告)号：US4220058A

    公开(公告)日：1980-09-02

    申请号：US939029

    申请日：1978-09-01

    申请人： Werner P. Petzold

    发明人： Werner P. Petzold

    IPC分类号： F16H59/16 ,  F16H61/00 ,  F16H61/06 ,  F16H3/74

    CPC分类号： F16H61/061 ,  F16H2061/0078 ,  F16H2061/0477 ,  F16H59/16 ,  Y10T477/69387

    摘要： An upshift gear ratio change is made in an automatic transmission by monitoring the driveline torque and operating a closed loop control system in response to that torque to in turn control the torque to obtain a desired shift. Shift quality is optimized, while torque transients are minimized, by initially closing the loop at the end of the static phase of the upshift when the driveline torque drops to its minimum turnaround point, the torque thereafter being controlled such that it increases from the turnaround point at a specified rate and in accordance with a predetermined first ramp command. As the increasing driveline torque then reaches a prescribed reset level, at an early stage in the dynamic phase, the closed loop control system is released and reset in order to control the torque in accordance with a second ramp command, the second ramp, that the torque is made to follow, thereby starting at a higher level than the first ramp. By initially closing the loop at the relatively low turnaround point undesired torque transients are precluded, and then by resetting the loop shortly thereafter, so that the torque ramp starts at a relatively high level, shift duration is maintained at a desired length and shift quality is enhanced. As a result, each time there is an upshift in the transmission there will be a smooth transition from the original engine speed to the new engine speed.

    摘要翻译： 通过监测传动系统扭矩并且响应于该扭矩操作闭环控制系统来进行自动变速器中的升挡变速比变化，从而控制扭矩以获得期望的换档。 通过在传动系扭矩下降到最小周转点时首先关闭升档静态相位结束时的循环，转矩质量得以最小化，此后的转矩被控制为使其从周转点增加 以规定的速率并根据预定的第一斜坡命令。 随着增加的传动系扭矩达到规定的复位水平，在动态相的早期阶段，闭环控制系统被释放并复位，以便根据第二斜坡指令第二斜坡来控制扭矩 使扭矩跟随，从而从比第一斜坡更高的水平开始。 通过首先在相对低的周转点处闭合回路，排除不期望的扭矩瞬变，然后通过在此之后不久复位回路，使得转矩斜坡在相对高的水平开始，变速持续时间保持在期望的长度，变速质量为 增强。 结果是，每当传动中有升档时，将从原始发动机转速平稳过渡到新的发动机转速。