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公开(公告)号：US20150012193A1
公开(公告)日：2015-01-08
申请号：US14475693
申请日：2014-09-03
发明人： Gregory Michael Pietron , Nimrod Kapas , Joseph F. Kucharski , Steven Adam Hermann , Christopher Gregory Garbacz , Yuji Fujii , Diana Yanakiev , Roberto Teran, JR.
CPC分类号： F16H61/0213 , F16H61/68 , G01L3/10 , G01L3/101 , G01L11/025
摘要： A transmission includes sensors positioned adjacent respective pairs of magnetized bands on a shaft of the transmission for detecting magnetic flux emanating from the bands in response to torque on the shaft. The transmission further includes an electronics interface assembly configured to respectively provide drive signals to the sensors and to receive from the sensors, in response to the drive signals, output signals indicative of the torque on the shaft as detected by the sensors.
摘要翻译： 变速器包括位于变速器的轴上相邻的相对对的磁化带对的传感器，用于响应于轴上的扭矩检测从带发出的磁通量。 变速器还包括电子接口组件，其被配置为分别向传感器提供驱动信号，并响应于驱动信号从传感器接收表示由传感器检测到的轴上的转矩的输出信号。
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32.发明授权Automatic transmission shift control based on transmission input shaft torque signal 有权基于传动输入轴转矩信号的自动变速箱换档控制公开(公告)号：US08894544B2
公开(公告)日：2014-11-25
申请号：US13798456
申请日：2013-03-13
发明人： Alexander O'Connor Gibson , Seung-Hoon Lee , Yuji Fujii , Gregory Michael Pietron , Diana Yanakiev , Joseph F. Kucharski , Nimrod Kapas
CPC分类号： B60W10/11 , B60W10/02 , B60W10/06 , F16H63/502 , F16H2063/504 , F16H2306/42 , Y10T477/641 , Y10T477/675 , Y10T477/688
摘要： A system and method for minimizing torque disturbances during a shift event for an automatic transmission control actual transmission input shaft torque using a transmission input shaft signal produced by an input shaft torque sensor. The torque sensor provides a signal to a controller that monitors the measured transmission input torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter, an input torque sensor coupled to the input shaft of the transmission and a controller configured to control engine torque to cause the measured transmission input shaft torque to achieve a target transmission input shaft torque during the shift event.
摘要翻译： 一种用于使用由输入轴扭矩传感器产生的变速器输入轴信号的自动变速器控制实际变速器输入轴转矩的换档事件期间的转矩扰动最小化的系统和方法。 扭矩传感器向控制器提供信号，该控制器监测测量的变速器输入扭矩。 扭矩传感器可以由应变仪，压电测力传感器或磁 - 弹性转矩传感器来实现。 该系统可以包括具有发动机的车辆动力系，经由变矩器耦合到发动机的变速器，耦合到变速器的输入轴的输入转矩传感器和被配置为控制发动机扭矩以使测量的变速器输入轴转矩 以在换档事件期间实现目标传动输入轴转矩。
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33.发明申请公开(公告)号：US20140324308A1
公开(公告)日：2014-10-30
申请号：US13873423
申请日：2013-04-30
IPC分类号： F16D48/06
CPC分类号： F16D48/06 , F16D48/066 , F16D2500/30803 , F16D2500/70252 , F16D2500/70282 , F16D2500/7044 , F16D2500/70605 , F16D2500/70663 , F16D2500/7101
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20140244067A1
公开(公告)日：2014-08-28
申请号：US13777100
申请日：2013-02-26
发明人： Dimitar P. Filev , John O. Michelini , Steven J. Szwabowski , Diana Yanakiev , Mahmoud Abou-Nasr, I
CPC分类号： G06F17/00 , B60W10/00 , B60W2550/142 , G01C21/32 , G06F17/16
摘要： Road grade is modeled over a region in which a vehicle is driven on roadways having a grade that varies over a plurality of predetermined grade ranges. A succession of grade values are generated while operating the vehicle at a predetermined rate, wherein each grade value identifies a respective grade range then being encountered. A Markov chain road-grade model is updated in response to the succession of grade values, wherein the model represents respective elements of probability in a matrix of transition events from each predetermined grade range to a respective next-in-succession grade range. Each element of the matrix has a value πi,j representing a weighted frequency of transition events from a first respective grade value to a second respective grade value divided by a weighted frequency of transition events initiating from the first respective grade value, so that the matrix successively approximates the road grade of the region.
摘要翻译： 道路坡度建模在车辆在具有在多个预定等级范围内变化的等级的道路上行驶的区域上。 在以预定的速率操作车辆时产生一连串的等级值，其中每个等级值识别然后遇到的相应的坡度范围。 根据等级值的连续性来更新马尔可夫链道路等级模型，其中模型表示从每个预定等级范围到相应的后继级别范围的过渡事件的矩阵中的概率的相应元素。 矩阵的每个元素具有值“p”; i，j表示从第一相应等级值到第二相应等级值的转移事件的加权频率除以从第一相应等级值开始的转换事件的加权频率，使得 矩阵依次逼近该区域的道路等级。
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公开(公告)号：US08788166B1
公开(公告)日：2014-07-22
申请号：US13779848
申请日：2013-02-28
CPC分类号： F16H61/061 , F16H61/686 , F16H2059/425 , F16H2061/0496 , Y02T10/76 , Y10T477/27 , Y10T477/675
摘要： A downshift control method during a coasting drive condition includes computing changes in output torque and input speed from initial output torque and initial input speed; reducing offgoing element pressure, provided a change in input speed exceeds a reference input speed change; using closed loop control based on output torque and a change in measured output torque to adjust oncoming element pressure such that output torque remains between predetermined maximum and minimum torques; and fully engaging the oncoming element.
摘要翻译： 在惯性驾驶状态期间的降档控制方法包括从初始输出转矩和初始输入速度计算输出转矩和输入速度的变化; 如果输入速度的变化超过参考输入速度变化，则减少偏离元件压力; 使用基于输出转矩和测量输出转矩的变化的闭环控制来调节迎面而来的元件压力，使得输出转矩保持在预定的最大和最小转矩之间; 并充分参与即将到来的元素。
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公开(公告)号：US08733183B1
公开(公告)日：2014-05-27
申请号：US13746576
申请日：2013-01-22
发明人： Diana Yanakiev , Eric H. Tseng , Gregory M. Pietron , Yuji Fujii
CPC分类号： G01M13/021 , G01L3/02
摘要： A method for detecting backlash and adjusting driveline variables, includes measuring torque transmitted between components across a torsional discontinuity, measuring driveline twist across the discontinuity, using a ratio of driveline twist divided by torque and an inverse of driveline stiffness to determine whether the driveline is entering, exiting or in a backlash zone, and using measured driveline twist and torque at the backlash zone to adjust reference values of driveline twist and torque.
摘要翻译： 一种用于检测齿隙和调整传动系变量的方法，包括测量扭转不连续部件之间传递的扭矩，测量不连续部分的传动系扭转，使用传动系扭矩除以扭矩的比值和传动系刚度的倒数，确定传动系是否进入 ，离开或在间隙区域，并使用测量的传动系扭转和扭矩在间隙区域调整传动系统扭矩和扭矩的参考值。
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37.发明申请公开(公告)号：US20190084576A1
公开(公告)日：2019-03-21
申请号：US16193714
申请日：2018-11-16
发明人： Christopher John Teslak , Gregory Michael Pietron , Hongtei Eric Tseng , Yuji Fujii , Michael Glenn Fodor , Diana Yanakiev , Seung-Hoon Lee
IPC分类号： B60W30/19 , B60W10/115 , F16H61/06 , F16D67/02 , F16H59/16 , B60W10/02 , B60W10/06 , B60W50/06 , B60W50/00 , F16H61/04
摘要： A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated fiction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.
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公开(公告)号：US09933069B2
公开(公告)日：2018-04-03
申请号：US14689165
申请日：2015-04-17
CPC分类号： F16H61/061 , F16D48/06 , F16D2500/3024 , F16D2500/30421 , F16D2500/3166 , F16D2500/3168 , F16D2500/525 , F16D2500/7044 , F16D2500/70605 , F16D2500/7082 , F16H2061/062
摘要： When a transmission controller issues a control command, such as pressure to control clutch torque, the response may be delayed due to dynamic properties of the control system. These properties can be modeled using a dynamic response model. One potential model is a combination of a pure time delay and a first order distributed delay. Control methods may be improved in several ways by accounting for the dynamic response. First, the dynamic response model may be used to improve adaptation of a transfer function between the commanded control signal and the clutch torque. Second, the command may be adjusted based on the dynamic response model. Both the pure time delay and the time constant of the first order distributed delay may be functions of operating conditions such as temperature.
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公开(公告)号：US09829411B2
公开(公告)日：2017-11-28
申请号：US15068005
申请日：2016-03-11
发明人： Yuji Fujii , Gregory Michael Pietron , Diana Yanakiev , Eric Hongtei Tseng , Vladimir Ivanovic , Jau-Wen Tseng
CPC分类号： G01M13/022 , F16D48/06 , F16D2500/3024 , F16D2500/30412 , F16D2500/30421 , F16D2500/3056 , F16D2500/3166 , F16D2500/3168 , F16D2500/525 , F16D2500/702 , F16D2500/7044 , F16D2500/70448 , F16D2500/70605 , F16D2500/70673 , F16D2500/7082 , F16H61/061 , F16H2061/0037 , F16H2061/0068 , F16H2061/0087 , F16H2061/0093 , F16H2061/064
摘要： A bench test calibration method for generating wet clutch torque transfer functions includes obtaining in-vehicle clutch torques at a set of shift conditions; performing a series of bench tests at various clutch pack clearances and lubrication oil flow rates at the set of shift conditions; adjusting clutch pack clearances and lubrication oil flow rates during the series of bench tests in response to a difference between a bench test measured clutch torques and the corresponding in-vehicle clutch torques exceeding a threshold; and recording relationships between first bench test measured torques and force profiles of a clutch actuator relative to the adjusted clutch pack clearances and lubrication oil flow rates for each of the set of shift conditions as a first transfer function.
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公开(公告)号：US09683656B2
公开(公告)日：2017-06-20
申请号：US14696580
申请日：2015-04-27
IPC分类号： F16H61/02
CPC分类号： F16H61/0213 , F16H59/14 , F16H2061/0223 , F16H2061/0227
摘要： A transmission for a vehicle includes a plurality of clutches that are individually selectively engaged to establish particular power flow paths. The amount of torque flowing through any clutch can be estimated while the clutch is being engaged, being disengaged, or being held locked. The estimated magnitude of clutch torque aids in proper control of the transmission, including how and when to shift between gears. A method and system for determining the uncertainty of estimated clutch torque is provided. Based on the magnitude of uncertainty of estimated clutch torque, the shift schedule can alter to specifically avoid actions that would increase the uncertainty, or the time between shifting gears can increase to reduce the effects of the uncertainty.
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