公开(公告)号：US07289889B2

公开(公告)日：2007-10-30

申请号：US10823170

申请日：2004-04-13

申请人： Sanjeev M. Naik ,  Pradyumna K. Mishra ,  Mark N. Howell ,  Rami I. Debouk ,  Mutasim A. Salman

发明人： Sanjeev M. Naik ,  Pradyumna K. Mishra ,  Mark N. Howell ,  Rami I. Debouk ,  Mutasim A. Salman

IPC分类号： G06F17/00

CPC分类号： B60W50/023 ,  B60T8/885 ,  B60T2270/413 ,  B62D5/001

摘要： A control system and method for use in vehicles, such as automotive vehicles. The control system and method is particularly adapted for use in vehicles having by-wire control systems. The control system uses three system controllers. Each of the controllers is adapted to receive redundant control inputs from at least one input device, such as a steering actuator, an accelerator actuator and a brake actuator. Each controller is adapted to receive a different unprocessed actuator sensor signal and a processed actuator sensor signal which are associated with the input device. Each controller may also be adapted to receive a sensor status signal which is also associated with the input device. In accordance with the method of the invention, these signals may be used to determine a sensor signal which may be used as the basis for control of control systems or components in response to the input device. Depending on the status of these signals, the sensor signal used for control may comprise the processed sensor signal or a resolved sensor signal. The sensor signal used for control may be determined by implementing a voting process in conjunction with the controllers which utilizes both the unprocessed sensor signals and the processed sensor signals.

摘要翻译： 用于诸如汽车的车辆的控制系统和方法。 控制系统和方法特别适用于具有线控制系统的车辆。 控制系统使用三个系统控制器。 每个控制器适于接收来自至少一个输入装置（例如转向致动器，加速器致动器和制动致动器）的冗余控制输入。 每个控制器适于接收与输入设备相关联的不同的未处理的致动器传感器信号和经处理的致动器传感器信号。 每个控制器还可以适于接收也与输入设备相关联的传感器状态信号。 根据本发明的方法，可以使用这些信号来确定传感器信号，该传感器信号可以用作响应于输入装置的控制系统或部件的控制的基础。 根据这些信号的状态，用于控制的传感器信号可以包括经处理的传感器信号或分辨的传感器信号。 用于控制的传感器信号可以通过结合使用未处理的传感器信号和处理的传感器信号的控制器实施投票过程来确定。

公开(公告)号：US20090295559A1

公开(公告)日：2009-12-03

申请号：US12131347

申请日：2008-06-02

申请人： Mark N. Howell ,  Mutasim A. Salman ,  Xidong Tang ,  Xiaodong Zhang ,  Yilu Zhang ,  Yuen-Kwok Chin ,  William C. Lin ,  Rami I. Debouk ,  Steven W. Holland ,  Sugato Chakrabarty ,  Rahul Chougule

发明人： Mark N. Howell ,  Mutasim A. Salman ,  Xidong Tang ,  Xiaodong Zhang ,  Yilu Zhang ,  Yuen-Kwok Chin ,  William C. Lin ,  Rami I. Debouk ,  Steven W. Holland ,  Sugato Chakrabarty ,  Rahul Chougule

IPC分类号： B60Q1/00

CPC分类号： B60Q11/00 ,  B60R2021/01184 ,  B60W30/02 ,  B60W50/0205

摘要： A system and method for determining the root cause of a fault in a vehicle system, sub-system or component using models and observations. In one embodiment, a hierarchical tree is employed to combine trouble or diagnostic codes from multiple sub-systems and components to get a confidence estimate of whether a certain diagnostic code is accurately giving an indication of problem with a particular sub-system or component. In another embodiment, a hierarchical diagnosis network is employed that relies on the theory of hierarchical information whereby at any level of the network only the required abstracted information is being used for decision making. In another embodiment, a graph-based diagnosis and prognosis system is employed that includes a plurality of nodes interconnected by information pathways. The nodes are fault diagnosis and fault prognosis nodes for components or sub-systems, and contain fault and state-of-health diagnosis and reasoning modules.

摘要翻译： 一种用于确定车辆系统，子系统或部件中使用模型和观测值的故障的根本原因的系统和方法。 在一个实施例中，使用分层树来组合来自多个子系统和组件的故障或诊断代码，以得到某一诊断代码是否准确地给出特定子系统或组件的问题的指示的置信度估计。 在另一个实施例中，采用依赖于层次信息理论的分级诊断网络，其中在网络的任何级别仅仅将所需的抽象信息用于决策。 在另一个实施例中，采用基于图的诊断和预后系统，其包括通过信息路径互连的多个节点。 节点是组件或子系统的故障诊断和故障预测节点，并包含故障和状态健康诊断和推理模块。

公开(公告)号：US08095261B2

公开(公告)日：2012-01-10

申请号：US12398895

申请日：2009-03-05

申请人： Mark N. Howell ,  Mutasim A. Salman ,  Xidong Tang ,  Yilu Zhang ,  Xiaodong Zhang ,  Yuen-Kwok Chin ,  Soumen De ,  Debprakash Patnaik ,  Sabyasachi Bhattacharya ,  Pulak Bandyopadhyay ,  Balarama V. Murty ,  Ansaf I. Alrabady ,  Rami I. Debouk ,  Steven W. Holland ,  George Paul Montgomery, Jr.

发明人： Mark N. Howell ,  Mutasim A. Salman ,  Xidong Tang ,  Yilu Zhang ,  Xiaodong Zhang ,  Yuen-Kwok Chin ,  Soumen De ,  Debprakash Patnaik ,  Sabyasachi Bhattacharya ,  Pulak Bandyopadhyay ,  Balarama V. Murty ,  Ansaf I. Alrabady ,  Rami I. Debouk ,  Steven W. Holland ,  George Paul Montgomery, Jr.

IPC分类号： G01M17/00 ,  G06F11/00

CPC分类号： G05B19/0428 ,  G05B2219/24069 ,  G05B2219/24216 ,  G05B2219/2637 ,  G07C5/008 ,  G07C5/085

摘要： A system and method for enhancing vehicle diagnostic and prognostic algorithms and improving vehicle maintenance practices. The method includes collecting data from vehicle components, sub-systems and systems, and storing the collected data in a database. The collected and stored data can be from multiple sources for similar vehicles or similar components and can include various types of trouble codes and labor codes as well as other information, such as operational data and physics of failure data, which are fused together. The method generates classes for different vehicle components, sub-systems and systems, and builds feature extractors for each class using data mining techniques of the data stored in the database. The method also generates classifiers that classify the features for each class. The feature extractors and feature classifiers are used to determine when a fault condition has occurred for a vehicle component, sub-system or system.

摘要翻译： 一种用于增强车辆诊断和预测算法并改进车辆维护实践的系统和方法。 该方法包括从车辆部件，子系统和系统收集数据，以及将收集的数据存储在数据库中。 收集和存储的数据可以来自类似车辆或类似部件的多个来源，并且可以包括各种类型的故障代码和劳动代码以及其它信息，诸如故障数据的操作数据和物理学，它们被融合在一起。 该方法为不同车辆组件，子系统和系统生成类，并使用存储在数据库中的数据的数据挖掘技术为每个类构建特征提取器。 该方法还生成为每个类分类功能的分类器。 特征提取器和特征分类器用于确定车辆部件，子系统或系统何时发生故障状况。

公开(公告)号：US07424642B2

公开(公告)日：2008-09-09

申请号：US11409870

申请日：2006-04-24

申请人： Mark N. Howell ,  Pradyumna K. Mishra

发明人： Mark N. Howell ,  Pradyumna K. Mishra

IPC分类号： G06F11/00 ,  G06F11/08 ,  G06F7/00 ,  G06F19/00 ,  G05B9/02 ,  G05B9/03 ,  G01M17/00 ,  G01R31/00 ,  H03K19/003 ,  H03K19/007

CPC分类号： G05B9/03

摘要： A system and method for reintegration of a redundant controller after occurrence of a fault is provided, comprising synchronizing outputs of a primary controller with outputs of secondary controllers. The controller is placed in a different mode of operation in which its output is not used in system control. A meta-controller is activated to drive the primary controller to the same states at which the secondary or redundant controllers operate. A voting mechanism is used to determine a fault in an output to a controlled device. Control of the device using the secondary outputs is effected. The primary controller recalculates the primary output, based upon the primary output; a feedback signal; and, the secondary outputs. Control using the primary output is permitted when the primary output is within an allowable range of the secondary outputs.

摘要翻译： 提供了一种用于在发生故障之后重新集成冗余控制器的系统和方法，包括使主控制器的输出与次级控制器的输出同步。 控制器处于不同的运行模式，其输出不用于系统控制。 激活元控制器以将主控制器驱动到次要或冗余控制器操作的相同状态。 投票机制用于确定受控设备的输出中的故障。 实现使用次级输出的设备的控制。 主控制器根据主输出重新计算主输出; 反馈信号; 和次级输出。 当主输出在辅助输出的允许范围内时，允许使用主输出的控制。

公开(公告)号：US08560165B2

公开(公告)日：2013-10-15

申请号：US13351473

申请日：2012-01-17

申请人： Mutasim A. Salman ,  Yilu Zhang ,  Mark N. Howell ,  Xidong Tang ,  Youseff A. Ghoneim ,  Walter A. Dorfstatter

发明人： Mutasim A. Salman ,  Yilu Zhang ,  Mark N. Howell ,  Xidong Tang ,  Youseff A. Ghoneim ,  Walter A. Dorfstatter

IPC分类号： G01M17/00 ,  G06F7/00 ,  G06F19/00

CPC分类号： G05B23/0283

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20130184929A1

公开(公告)日：2013-07-18

申请号：US13351473

申请日：2012-01-17

申请人： Mutasim A. Salman ,  Yilu Zhang ,  Mark N. Howell ,  Xidong Tang ,  Youssef A. Ghoneim ,  Walter A. Dorfstatter

发明人： Mutasim A. Salman ,  Yilu Zhang ,  Mark N. Howell ,  Xidong Tang ,  Youssef A. Ghoneim ,  Walter A. Dorfstatter

IPC分类号： G06F7/00

CPC分类号： G05B23/0283

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20110202227A1

公开(公告)日：2011-08-18

申请号：US12707516

申请日：2010-02-17

申请人： Yilu Zhang ,  Mutasim A. Salman ,  Kwang-Keun Shin ,  Satish Rajagopalan ,  Mark N. Howell ,  Xidong Tang ,  Hong S. Bae

发明人： Yilu Zhang ,  Mutasim A. Salman ,  Kwang-Keun Shin ,  Satish Rajagopalan ,  Mark N. Howell ,  Xidong Tang ,  Hong S. Bae

IPC分类号： G06F11/07 ,  G06F7/00

CPC分类号： B60W50/04 ,  B60W50/0097 ,  B60W2510/244 ,  B60W2510/248

摘要： A system and method for providing component and sub-system state of health prognosis in a complex system using fault models and component aging models. The method includes determining a current state of health value for a sub-system using fault signature test results and determining current state of health values for a plurality of components in the sub-system using the fault signature test results. The method also determines current state of health values for components in the system that cannot use fault signature test results using a first probability model and the current state of health values for the plurality of components. The method determines predicted future state of health values for the components in the sub-system using component aging models and determines a predicted future state of health value for the sub-system using a second probability model and the future state of health values of the components.

摘要翻译： 一种使用故障模型和组件老化模型在复杂系统中提供组件和子系统健康状况预测的系统和方法。 该方法包括使用故障签名测试结果确定子系统的健康状况值的当前状态，并使用故障签名测试结果确定子系统中的多个组件的健康值的当前状态。 该方法还确定系统中不能使用第一概率模型使用故障签名测试结果和多个组件的健康状况值的当前状态的组件的健康状况值的当前状态。 该方法使用组件老化模型确定子系统中组件的健康值的预测未来状态，并使用第二概率模型确定子系统的健康值的预测未来状态以及组件的健康值的未来状态 。

公开(公告)号：US20120116630A1

公开(公告)日：2012-05-10

申请号：US12943261

申请日：2010-11-10

申请人： Mark N. Howell ,  Mutasim A. Salman ,  Xidong Tang ,  Yilu Zhang ,  Soumen De ,  Sugato Chakrabarty ,  Rahul Chougule ,  Pulak Bandyopadhyay ,  Steven W. Holland

发明人： Mark N. Howell ,  Mutasim A. Salman ,  Xidong Tang ,  Yilu Zhang ,  Soumen De ,  Sugato Chakrabarty ,  Rahul Chougule ,  Pulak Bandyopadhyay ,  Steven W. Holland

IPC分类号： G06F19/00

CPC分类号： G06Q10/0639

摘要： A method is provided for enhancing service diagnostics utilizing service repair data of previously serviced vehicles. Service repair data of previously serviced vehicles is obtained from a memory storage device. The service data is compiled into a service diagnostic code dataset and a service labor code dataset. The service diagnostic code dataset and service labor code dataset are categorized into an electronic data table. Respective combinations are formed in the electronic data table. An aggregate count is determined for each respective combination in the electronic data table. Either of a respective diagnostic code or a respective service labor code is identified having a correlation with more than one of either service diagnostic codes or service labor codes. At least one of a service repair procedure used to repair the vehicle or a respective service diagnostic code used to identify the fault is modified in response to analyzing the respective combinations.

摘要翻译： 提供了一种利用先前服务车辆的维修数据来增强服务诊断的方法。 从存储器存储装置获得先前服务车辆的维修数据。 服务数据被编译成服务诊断代码数据集和服务人工代码数据集。 服务诊断码数据集和服务人工代码数据集分为电子数据表。 在电子数据表中形成各种组合。 为电子数据表中的每个组合确定聚合计数。 识别与诊断代码或服务劳动代码中的多于一个的相关性的各个诊断代码或相应的服务劳工代码。 响应于分析各个组合，修改用于修理车辆的维修程序中的至少一个或用于识别故障的相应服务诊断代码。

公开(公告)号：US07376499B2

公开(公告)日：2008-05-20

申请号：US11228913

申请日：2005-09-16

申请人： Mutasim A. Salman ,  Mark N. Howell

发明人： Mutasim A. Salman ,  Mark N. Howell

IPC分类号： G01M17/00

CPC分类号： G01R31/2829 ,  G01R31/007 ,  G01R31/2846

摘要： A system and related method for monitoring the state of health of sensors in an integrated vehicle stability control system. In one embodiment, the system determines whether a yaw rate sensor, a lateral acceleration sensor or a hand-wheel angle sensor has failed. The system uses a plurality of models to generate estimates of the outputs of the sensors based on the actual sensor measurements. Residuals are generated as the difference between the measured value and each of the estimates for the particular sensor. The residuals are compared to a threshold to determine whether a fault flag will be set for each residual. The threshold for the hand-wheel angle sensor is an adaptive threshold because it does not have physical redundancy. If the fault flags for the residuals for each sensor have a particular pattern, then a fault is output for that sensor.

摘要翻译： 一种用于监测综合车辆稳定性控制系统中的传感器的健康状态的系统和相关方法。 在一个实施例中，系统确定偏航率传感器，横向加速度传感器或手轮角度传感器是否已经失败。 该系统使用多个模型来基于实际的传感器测量来产生传感器的输出的估计。 残差产生为测量值与特定传感器的每个估计值之间的差值。 将残差与阈值进行比较，以确定是否为每个残差设置故障标志。 手轮角度传感器的阈值是自适应阈值，因为它没有物理冗余。 如果每个传感器的残差的故障标志具有特定的模式，则会为该传感器输出故障。

公开(公告)号：US20100042287A1

公开(公告)日：2010-02-18

申请号：US12190322

申请日：2008-08-12

申请人： XIAODONG ZHANG ,  William C. Lin ,  Yilu Zhang ,  Mutasim A. Salman ,  Yuen-Kwok Chin ,  Steven W. Holland ,  Mark N. Howell

发明人： XIAODONG ZHANG ,  William C. Lin ,  Yilu Zhang ,  Mutasim A. Salman ,  Yuen-Kwok Chin ,  Steven W. Holland ,  Mark N. Howell

IPC分类号： G06F19/00

CPC分类号： G06Q10/06 ,  G07C5/008

摘要： A system and method for providing proactive vehicle system management and maintenance using diagnostic and prognostic information. Vehicle information is collected from vehicle sensors and/or sub-systems by an on-board module on the vehicle and/or at a remote facility where the information is wirelessly transmitted to the remote facility. The collected information is analyzed to determine the health of various systems, sub-systems and components so that the remaining useful life of the systems, sub-systems and components can be predicted. By utilizing the diagnostic and prognostic information, a vehicle control strategy can be reconfigured to minimize customer impact. Further, if a software problem is detected, temporary or permanent software fixes can be provided automatically and remotely through a remote service garage.

摘要翻译： 一种使用诊断和预测信息提供主动式车辆系统管理和维护的系统和方法。 车辆信息从车辆传感器和/或子系统通过车辆上的车载模块和/或远程设施收集，其中信息被无线传输到远程设施。 分析收集到的信息以确定各种系统，子系统和组件的健康状况，以便可以预测系统，子系统和组件的剩余使用寿命。 通过利用诊断和预测信息，可以重新配置车辆控制策略，以尽量减少客户影响。 此外，如果检测到软件问题，可以通过远程服务车库自动和远程地提供临时或永久的软件修复。