FAULT ISOLATION IN ELECTRONIC RETURNLESS FUEL SYSTEM
    1.
    发明申请
    FAULT ISOLATION IN ELECTRONIC RETURNLESS FUEL SYSTEM 有权
    电子回收燃料系统中的故障分离

    公开(公告)号:US20130213123A1

    公开(公告)日:2013-08-22

    申请号:US13400216

    申请日:2012-02-20

    Abstract: A method for detecting and isolating an actual fault in a fuel delivery system having a fuel pump and a fuel pump motor, includes monitoring fuel pressure, pump current, and pump voltage. Each of a plurality of fault triggers are designated as one of flagged and un-flagged based on at least one of the fuel pressure, the pump current and the pump voltage. The actual fault in the fuel delivery system is isolated from a plurality of possible faults when a condition respective to one of the possible faults is satisfied based on at least one of the plurality of fault triggers designated as flagged and un-flagged.

    Abstract translation: 一种用于检测和隔离具有燃料泵和燃料泵电动机的燃料输送系统中的实际故障的方法,包括监测燃料压力,泵电流和泵电压。 基于燃料压力,泵浦电流和泵浦电压中的至少一个,将多个故障触发中的每一个指定为标记和未标记的一个。 当基于指定为被标记和未被标记的多个故障触发中的至少一个故障触发时,当满足可能故障之一的条件时,燃料输送系统中的实际故障与多个可能故障隔离。

    Linear and non-linear identification of the longitudinal tire-road friction coefficient
    2.
    发明授权
    Linear and non-linear identification of the longitudinal tire-road friction coefficient 有权
    纵向轮胎路面摩擦系数的线性和非线性识别

    公开(公告)号:US08498775B2

    公开(公告)日:2013-07-30

    申请号:US12987483

    申请日:2011-01-10

    Abstract: A method of estimating a tire-road friction coefficient includes determining when the slope of a tire characteristic curve relating a utilized longitudinal friction of a tire to longitudinal slip of the tire is linear and non-linear. When the slope of the tire characteristic curve is linear, then the tire-road friction coefficient is estimated by correlating the slope of the tire characteristic curve to the tire-road friction coefficient. When the slope of the tire characteristic curve is non-linear, indicating that the tire is near or at saturation, then the tire-road friction coefficient is estimated by calculating a current utilized longitudinal friction of the tire.

    Abstract translation: 估计轮胎路面摩擦系数的方法包括确定轮胎特性曲线的斜率是否与所使用的轮胎的纵向摩擦相关的轮胎的纵向滑动是线性的和非线性的。 当轮胎特性曲线的斜率为线性时,通过将轮胎特性曲线的斜率与轮胎路面摩擦系数相关联来估计轮胎路面摩擦系数。 当轮胎特性曲线的斜率为非线性时,表示轮胎接近或处于饱和状态,则通过计算轮胎的当前利用的纵向摩擦来估计轮胎路面摩擦系数。

    Co-Operative On-Board and Off-Board Component and System Diagnosis and Prognosis
    3.
    发明申请
    Co-Operative On-Board and Off-Board Component and System Diagnosis and Prognosis 有权
    合作的车载和非车载组件和系统诊断和预后

    公开(公告)号:US20130184929A1

    公开(公告)日:2013-07-18

    申请号:US13351473

    申请日:2012-01-17

    CPC classification number: G05B23/0283

    Abstract: A cooperative diagnostic and prognosis system for generating a prognosis of at least one component in a vehicle. An in-vehicle diagnostic unit determines a diagnostic signature of the component each time an occurrence of a condition is triggered and transmits the diagnostic signature to an off-board diagnostic unit. The off-vehicle diagnostic unit determines a SOH of the component and a rate-of-change in the SOH of the component. The off-vehicle diagnostic unit determines whether the rate-of-change in the SOH is greater than a threshold. The off-vehicle diagnostic unit requests additional information from the vehicle in response to the rate-of-change in the SOH being greater than the threshold. The additional information relating to operating parameter data associated with the component. The off-vehicle diagnostic unit receives the requested information and predicts a time-to-failure of the component.

    Abstract translation: 一种用于产生车辆中至少一个部件的预后的协作诊断和预后系统。 车载诊断单元在每次触发条件的发生时确定组件的诊断签名,并将诊断签名发送到车外诊断单元。 离车诊断单元确定组件的SOH和组件的SOH中的变化率。 离车诊断单元确定SOH中的变化率是否大于阈值。 响应于SOH中的变化率大于阈值,车外诊断单元从车辆请求附加信息。 与组件相关的操作参数数据的附加信息。 离车诊断单元接收所请求的信息并预测组件的故障时间。

    Vehicle traction control system
    5.
    发明授权
    Vehicle traction control system 失效
    车辆牵引力控制系统

    公开(公告)号:US5025882A

    公开(公告)日:1991-06-25

    申请号:US467581

    申请日:1990-01-19

    CPC classification number: B60T8/175

    Abstract: A vehicle acceleration wheel slip control system monitors wheel slip and when a wheel slip condition becomes excessive as wheel slip increases during vehicle acceleration, engine torque output is initially reduced in accord with the rate of change in wheel slip. This derivative adjustment produces a significant correction to the engine torque output before the slip condition becomes very large. Thereafter, when the slip condition represents recovery from the excessive slip condition, the engine torque output is controlled in accord with the error in wheel slip from a desired value. This proportional adjustment maintains a desired slip value while maintaining stable acceleration slip control.

    Abstract translation: 车辆加速车轮滑移控制系统监测车轮滑移,并且当车辆加速期间车轮滑移增加时车轮滑动状况变得过大时,发动机扭矩输出最初根据车轮滑移的变化率而减小。 在滑移条件变得非常大之前,该微分调整对发动机转矩输出产生显着的校正。 此后,当滑动状态表示从过度滑动状态恢复时,根据期望值来控制发动机转矩输出与车轮滑移中的误差一致。 该比例调整在保持稳定的加速滑移控制的同时保持期望的滑移值。

    Friction-based state of health indicator for an electric power steering system
    6.
    发明授权
    Friction-based state of health indicator for an electric power steering system 有权
    用于电动助力转向系统的基于摩擦的健康状态指示器

    公开(公告)号:US08634986B2

    公开(公告)日:2014-01-21

    申请号:US13075263

    申请日:2011-03-30

    CPC classification number: B62D5/0481 B62D6/008

    Abstract: A method for determining a state of health (SOH) value for an electric power steering (EPS) system in a vehicle includes estimating a first Self-Aligning Torque (SAT) value using a tire dynamics model, which includes modeled dynamics in the linear region of a lateral force acting on the vehicle tires. The method also includes estimating a second SAT value using an extended state observer and nominal parameters for the EPS system, and calculating a variance between the first and second SAT values. The controller monitors a progression of the calculated variance over a calibrated interval using the controller to thereby determine the SOH value, and automatically executes a control action using the SOH value. An EPS system for a vehicle includes a steering wheel, torque and angle sensors, a rack and pinion assembly, a steering motor, and the controller. A vehicle is also disclosed having the same controller.

    Abstract translation: 用于确定车辆中的电动助力转向系统(EPS)系统的健康状态(SOH)值的方法包括使用轮胎动力学模型估计第一自对准转矩(SAT)值,所述轮胎动力学模型包括线性区域中的建模动力学 作用在车辆轮胎上的横向力。 该方法还包括使用扩展状态观察器和EPS系统的标称参数来估计第二SAT值,以及计算第一和第二SAT值之间的方差。 控制器使用控制器在校准的间隔上监视所计算的方差的进展,从而确定SOH值,并且使用SOH值自动执行控制动作。 用于车辆的EPS系统包括方向盘,扭矩和角度传感器,齿条和小齿轮组件,转向马达和控制器。 还公开了具有相同控制器的车辆。

    METHOD AND APPARATUS TO MONITOR AN ELECTRIC MOTOR IN A RETURNLESS FUEL SYSTEM
    8.
    发明申请
    METHOD AND APPARATUS TO MONITOR AN ELECTRIC MOTOR IN A RETURNLESS FUEL SYSTEM 有权
    用于监测回收燃料系统中的电动机的方法和装置

    公开(公告)号:US20130112173A1

    公开(公告)日:2013-05-09

    申请号:US13288073

    申请日:2011-11-03

    Abstract: An electric motor is configured to provide mechanical power to a fuel pump. A method for monitoring the fuel pump includes estimating a pump speed and a nominal pump motor current in relation to a pump motor control signal and a fuel pressure. An armature resistance and a back-emf constant for the electric motor are determined corresponding to the estimated pump speed, a monitored pump motor current, and the pump motor control signal. A nominal armature resistance and a nominal back-emf constant for the electric motor are adjusted in relation to a pump motor temperature. A plurality of residuals are calculated based upon the adjusted nominal armature resistance, the adjusted nominal back-emf constant for the electric motor, the estimated armature resistance and the estimated back-emf constant for the electric motor. The residuals are compared with corresponding thresholds. A fault in the electric motor is detected based upon the comparisons of the residuals with the corresponding thresholds.

    Abstract translation: 电动机构造成向燃料泵提供机械动力。 用于监测燃料泵的方法包括相对于泵电动机控制信号和燃料压力估计泵速度和标称泵电动机电流。 根据估计的泵速,监测的泵电动机电流和泵电机控制信号来确定电动机的电枢电阻和反电动势常数。 相对于泵电机温度调节电动机的标称电枢电阻和标称反电动势常数。 基于经调整的标称电枢电阻,电动机的调整的额定反向电动势,估计的电枢电阻和电动机的估计反电动势常数来计算多个残差。 将残差与相应的阈值进行比较。 基于残差与相应阈值的比较来检测电动机的故障。

    REAL-TIME ALLOCATION OF ACTUATOR TORQUE IN A VEHICLE
    10.
    发明申请
    REAL-TIME ALLOCATION OF ACTUATOR TORQUE IN A VEHICLE 有权
    车辆执行器扭矩的实时分配

    公开(公告)号:US20120197469A1

    公开(公告)日:2012-08-02

    申请号:US13017117

    申请日:2011-01-31

    Abstract: A method for allocating forces among the corners of a vehicle having a redundant actuator suite includes determining a set of desired forces at the center of gravity of the vehicle, and allocating the set of desired forces among the corners of the vehicle as virtual control commands using a controller. The method also includes mapping the virtual control commands at the corners to actual or true control commands at the corners, and controlling a plurality of actuators at the corners using the actual or true control commands. The actuators may include friction brakes and wheel motors. Mapping the virtual control commands may include using a Least Squares formulation. Control of the actuators may be prioritized with respect to each other using weighting matrices. A vehicle includes a controller having actuators and a controller configured for executing the above method.

    Abstract translation: 一种用于在具有冗余致动器套件的车辆的角部之间分配力的方法包括确定在车辆重心处的一组期望的力,并且在车辆的角部之间分配所需的力集合作为虚拟控制命令,使用 一个控制器 该方法还包括将角落处的虚拟控制命令映射到角落处的实际或真实控制命令,并且使用实际或真实的控制命令来控制拐角处的多个致动器。 致动器可以包括摩擦制动器和轮式电动机。 映射虚拟控制命令可以包括使用最小二乘公式。 致动器的控制可以使用加权矩阵相对于彼此来优先。 车辆包括具有致动器的控制器和被配置为执行上述方法的控制器。

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