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    System and method for simulating the performance of a virtual vehicle
    4.
    发明授权
    System and method for simulating the performance of a virtual vehicle 有权
    用于模拟虚拟车辆的性能的系统和方法

    公开(公告)号：US08862346B2

    公开(公告)日：2014-10-14

    申请号：US13425086

    申请日：2012-03-20

    申请人： Benjamin J. Saltsman ,  Xubin Song ,  Benjamin J. Morris ,  Chia-Hsiang Liu ,  Zhijun Tang

    发明人： Benjamin J. Saltsman ,  Xubin Song ,  Benjamin J. Morris ,  Chia-Hsiang Liu ,  Zhijun Tang

    IPC分类号： G06F7/00 ,  G06F17/00 ,  G06F19/00 ,  B60W10/10

    CPC分类号： G06F17/00 ,  B60W10/10 ,  G01M17/007 ,  G07C5/08

    摘要： A mobile computing apparatus simulates the performance of a virtual vehicle using the route, driving behavior and loading experience of a baseline vehicle. The baseline vehicle is instrumented and operational data is collected, forming a data set. The apparatus includes simulator logic configured to construct a duty cycle from the data set representative of the operation of the baseline vehicle during travel along the route (e.g., a loading duty cycle). The data set includes route data with distance and vehicle speed information, engine data associated with the engine, and operational element data. The logic defines a virtual vehicle that is the same as the baseline vehicle but that includes a virtual operational element, such as a transmission, that is different than that in the baseline vehicle. The logic determines a performance characteristic, such as fuel economy, of the virtual vehicle using the constructed duty cycle.

    摘要翻译： 移动计算设备使用基线车辆的路线，驾驶行为和加载经验来模拟虚拟车辆的性能。 对基线车辆进行检测，收集运行数据，形成数据集。 该装置包括模拟器逻辑，其被配置为在沿路线行驶期间（例如，装载占空比）从表示基线车辆的操作的数据集构建占空比。 数据集包括具有距离和车速信息的路线数据，与发动机相关联的发动机数据和操作元件数据。 该逻辑定义与基准车辆相同的虚拟车辆，但是包括与基准车辆不同的虚拟操作元件，例如变速器。 该逻辑决定了使用构造的占空比的虚拟车辆的性能特征，例如燃料经济性。

    Method for estimating clutch engagement parameters in a strategy for clutch management in a vehicle powertrain
    5.
    发明授权
    Method for estimating clutch engagement parameters in a strategy for clutch management in a vehicle powertrain 失效
    用于在车辆动力总成中的离合器管理策略中估计离合器接合参数的方法

    公开(公告)号：US07603219B2

    公开(公告)日：2009-10-13

    申请号：US12070942

    申请日：2008-02-22

    申请人： Sameer A. Joshi ,  Ananthakrishnan Surianarayanan ,  Chia-Hsiang Liu

    发明人： Sameer A. Joshi ,  Ananthakrishnan Surianarayanan ,  Chia-Hsiang Liu

    IPC分类号： G06F7/00 ,  B60W10/02

    CPC分类号： F16D48/06 ,  F16D2500/3165 ,  F16D2500/70264 ,  F16D2500/70605 ,  F16D2500/7082 ,  Y10T477/70

    摘要： A method is disclosed for computing clutch engagement characteristics of a friction clutch system in a vehicle powertrain. A dynamic model of the system is used under conditions that cause clutch slipping. Algebraic equations defining a functional relationship between clutch torque and an engagement angle have characteristic parameters that are estimated using a non-linear least squares technique. The non-linear least squares technique repetitively minimizes the difference between a measured clutch output speed and a clutch output speed from the system dynamic model for the same inputs until a small insignificant error is reached. Parameter estimates are used to update each engagement characteristic.

    摘要翻译： 公开了一种用于计算车辆动力系中的摩擦离合器系统的离合器接合特性的方法。 在导致离合器滑动的条件下使用系统的动态模型。 定义离合器转矩和接合角度之间的函数关系的代数方程式具有使用非线性最小二乘法估计的特征参数。 非线性最小二乘法重复地将从相同输入的系统动态模型测得的离合器输出速度和离合器输出速度之间的差最小化，直到达到小的无意义的误差。 参数估计用于更新每个接合特性。

    System and method for determining relative brake factors
    6.
    发明授权
    System and method for determining relative brake factors 失效
    用于确定相对制动系数的系统和方法

    公开(公告)号：US5415466A

    公开(公告)日：1995-05-16

    申请号：US232722

    申请日：1994-04-22

    申请人： Michael T. Breen ,  Chia-Hsiang Liu

    发明人： Michael T. Breen ,  Chia-Hsiang Liu

    IPC分类号： B60T7/20 ,  B60T8/00 ,  B60T8/17 ,  B60T8/172 ,  B60T8/26 ,  B60T13/66 ,  B60T13/00

    CPC分类号： B60T8/266 ,  B60T13/66 ,  B60T7/20 ,  B60T8/00 ,  B60T8/1708 ,  B60T8/172 ,  Y10S303/03 ,  Y10S303/04

    摘要： A large articulated vehicle, such as a tractor semi-trailer truck often has a number of braking locations each having a number of brake sites. To properly balance the work performed at the various brake sites in decelerating the vehicle, it is necessary to determine the relative brake factors of each site. The brake factors characterize the braking performance for a particular delivered braking pressure. A system and method for determining the relative brake factors for such a vehicle is provided. The vehicle is decelerated at a known rate while delivered braking pressure is measured and recorded for each braking location. A system of simultaneous equations is then solved to determine the relative brake factors. Once the brake factors have been determined during a sequence of controlled braking events, subsequent braking may be modified to achieve a work-balanced braking mode.

    摘要翻译： 诸如拖拉机半挂车的大型铰接车辆通常具有多个制动位置，每个制动位置具有多个制动器位置。 为了在各车辆减速时对各个制动部位进行的工作进行平衡，需要确定各站点的相对制动系数。 制动因素表征特定传动制动压力的制动性能。 提供了一种用于确定这种车辆的相对制动系数的系统和方法。 车辆以已知的速度减速，同时测量并记录每个制动位置的制动压力。 然后解决联立方程组，以确定相对制动系数。 一旦在一系列控制的制动事件中确定了制动因素，则可以修改随后的制动以实现工作平衡制动模式。

    Method for estimating clutch engagement parameters in a strategy for clutch management in a vehicle powertrain
    8.
    发明申请
    Method for estimating clutch engagement parameters in a strategy for clutch management in a vehicle powertrain 审中-公开
    用于在车辆动力总成中的离合器管理策略中估计离合器接合参数的方法

    公开(公告)号：US20070294017A1

    公开(公告)日：2007-12-20

    申请号：US11471267

    申请日：2006-06-20

    申请人： Sameer A. Joshi ,  Ananthakrishnan Surianarayanan ,  Chia-Hsiang Liu

    发明人： Sameer A. Joshi ,  Ananthakrishnan Surianarayanan ,  Chia-Hsiang Liu

    IPC分类号： G06F17/00

    CPC分类号： F16D48/06 ,  F16D2500/3165 ,  F16D2500/70264 ,  F16D2500/70605 ,  F16D2500/7082 ,  Y10T477/70

    摘要： A method is disclosed for estimating clutch engagement characteristics of a friction clutch system in a vehicle powertrain. A dynamic model of the system is used under conditions that cause clutch slipping. Algebraic equations defining a functional relationship between clutch torque and an engagement angle have characteristic parameters that are estimated using a non-linear least squares technique. A non-linear least squares technique iteratively minimizes the difference between a measured output clutch disk speed and an output clutch disk speed from the system dynamic model for the same inputs until a small insignificant error is reached. Parameter estimates are used to compile an estimated clutch engagement characteristic.

    摘要翻译： 公开了一种用于估计车辆动力系中的摩擦离合器系统的离合器接合特性的方法。 在导致离合器滑动的条件下使用系统的动态模型。 定义离合器转矩和接合角度之间的函数关系的代数方程式具有使用非线性最小二乘法估计的特征参数。 非线性最小二乘法迭代地将来自相同输入的系统动态模型的测量输出离合器盘速度和输出离合器盘速度之间的差最小化，直到达到小的无意义的错误。 参数估计用于编译估计的离合器接合特性。

    SYSTEM AND METHOD FOR SIMULATING THE PERFORMANCE OF A VIRTUAL VEHICLE
    10.
    发明申请
    SYSTEM AND METHOD FOR SIMULATING THE PERFORMANCE OF A VIRTUAL VEHICLE 有权
    用于模拟虚拟车辆性能的系统和方法

    公开(公告)号：US20130253782A1

    公开(公告)日：2013-09-26

    申请号：US13425086

    申请日：2012-03-20

    申请人： Benjamin J. Saltsman ,  Xubin Song ,  Benjamin J. Morris ,  Chia-Hsiang Liu ,  Zhijun Tang

    发明人： Benjamin J. Saltsman ,  Xubin Song ,  Benjamin J. Morris ,  Chia-Hsiang Liu ,  Zhijun Tang

    IPC分类号： G06G7/70 ,  G06F7/00

    CPC分类号： G06F17/00 ,  B60W10/10 ,  G01M17/007 ,  G07C5/08

    摘要： A mobile computing apparatus simulates the performance of a virtual vehicle using the route, driving behavior and loading experience of a baseline vehicle. The baseline vehicle is instrumented and operational data is collected, forming a data set. The apparatus includes simulator logic configured to construct a duty cycle from the data set representative of the operation of the baseline vehicle during travel along the route (e.g., a loading duty cycle). The data set includes route data with distance and vehicle speed information, engine data associated with the engine, and operational element data. The logic defines a virtual vehicle that is the same as the baseline vehicle but that includes a virtual operational element, such as a transmission, that is different than that in the baseline vehicle. The logic determines a performance characteristic, such as fuel economy, of the virtual vehicle using the constructed duty cycle.

    摘要翻译： 移动计算设备使用基线车辆的路线，驾驶行为和加载经验来模拟虚拟车辆的性能。 对基线车辆进行检测，收集运行数据，形成数据集。 该装置包括模拟器逻辑，其被配置为在沿路线行驶期间（例如，装载占空比）从表示基线车辆的操作的数据集构建占空比。 数据集包括具有距离和车速信息的路线数据，与发动机相关联的发动机数据和操作元件数据。 该逻辑定义与基准车辆相同的虚拟车辆，但是包括与基准车辆不同的虚拟操作元件，例如变速器。 该逻辑决定了使用构造的占空比的虚拟车辆的性能特征，例如燃料经济性。