公开(公告)号：US20090197126A1

公开(公告)日：2009-08-06

申请号：US12027049

申请日：2008-02-06

申请人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

发明人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

IPC分类号： H01M8/04

CPC分类号： H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M8/04992

摘要： A system and method for limiting the output current of a fuel cell stack as the stack degrades overtime. A look-up table identifies a predetermined voltage set-point for stack current density. A first comparator provides a voltage difference signal between the set-point and the stack voltage. The voltage difference signal is provided to a controller, such as a proportional-integral controller, that provides a current limiting signal. The current limiting signal and a current request signal are provided to a second comparator that selects which signal will be used to limit the maximum output current of the stack. A polarization curve estimator estimates parameters of the stack that will change over the life of the stack. The parameters are provided to a gain scheduler that provides gains to the controller that are based on where in the life of the stack it is currently operating.

摘要翻译： 一种用于限制燃料电池堆的输出电流的系统和方法，因为堆叠降低了加班时间。 查找表识别堆电流密度的预定电压设定点。 第一比较器在设定点和堆叠电压之间提供电压差信号。 电压差信号被提供给提供限流信号的控制器，例如比例积分控制器。 电流限制信号和当前请求信号被提供给第二比较器，第二比较器选择哪个信号将用于限制堆叠的最大输出电流。 极化曲线估计器估计将在堆栈的寿命内改变的堆栈的参数。 这些参数被提供给增益调度器，其为控制器提供增益，其基于其当前正在操作的堆栈的寿命。

公开(公告)号：US08863288B1

公开(公告)日：2014-10-14

申请号：US13341002

申请日：2011-12-30

申请人： David R. Savage ,  Ateeq Sharfuddin ,  Tsu-Yi Lin ,  Benjamin L. Dagana

发明人： David R. Savage ,  Ateeq Sharfuddin ,  Tsu-Yi Lin ,  Benjamin L. Dagana

IPC分类号： G06F11/00

CPC分类号： G06F21/56 ,  G06F21/567

摘要： In systems and methods of detecting malicious software, a software agent comprising at least one scan module is assembled by a source system and is transferred by the source system to a target system. In response to a connection request from the software agent a connection is established to the software agent and a file is received from the target system. At the source system, a static analysis is performed on the transferred file to generate a static threat score, and a dynamic analysis is performed to generate a dynamic threat score. Based on the static threat score and the dynamic threat score an aggregate threat score is generated for the transferred file.

摘要翻译： 在检测恶意软件的系统和方法中，包括至少一个扫描模块的软件代理由源系统组装，并由源系统传送到目标系统。 响应于来自软件代理的连接请求，建立到软件代理的连接，并且从目标系统接收文件。 在源系统中，对传输的文件执行静态分析以生成静态威胁分数，并进行动态分析以生成动态威胁分数。 基于静态威胁分数和动态威胁分数，会为传输的文件生成总威胁分数。

公开(公告)号：US07955743B2

公开(公告)日：2011-06-07

申请号：US12027049

申请日：2008-02-06

申请人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

发明人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

IPC分类号： H01M8/04

CPC分类号： H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M8/04992

摘要： A system and method for limiting the output current of a fuel cell stack as the stack degrades overtime. A look-up table identifies a predetermined voltage set-point for stack current density. A first comparator provides a voltage difference signal between the set-point and the stack voltage. The voltage difference signal is provided to a controller, such as a proportional-integral controller, that provides a current limiting signal. The current limiting signal and a current request signal are provided to a second comparator that selects which signal will be used to limit the maximum output current of the stack. A polarization curve estimator estimates parameters of the stack that will change over the life of the stack. The parameters are provided to a gain scheduler that provides gains to the controller that are based on where in the life of the stack it is currently operating.

摘要翻译： 一种用于限制燃料电池堆的输出电流的系统和方法，因为堆叠降低了加班时间。 查找表识别堆电流密度的预定电压设定点。 第一比较器在设定点和堆叠电压之间提供电压差信号。 电压差信号被提供给提供限流信号的控制器，例如比例积分控制器。 电流限制信号和当前请求信号被提供给第二比较器，第二比较器选择哪个信号将用于限制堆叠的最大输出电流。 极化曲线估计器估计将在堆栈的寿命内改变的堆栈的参数。 这些参数被提供给增益调度器，其为控制器提供增益，其基于其当前正在操作的堆栈的寿命。

公开(公告)号：US20110014535A1

公开(公告)日：2011-01-20

申请号：US12502961

申请日：2009-07-14

申请人： Tayoung Choi ,  Sriram Ganapathy ,  Jaehak Jung ,  David R. Savage ,  Balasubramanian Lakshmanan ,  Pamela M. Vecasey

发明人： Tayoung Choi ,  Sriram Ganapathy ,  Jaehak Jung ,  David R. Savage ,  Balasubramanian Lakshmanan ,  Pamela M. Vecasey

IPC分类号： H01M8/04

CPC分类号： H01M8/04552 ,  G01R31/362 ,  H01M8/04358 ,  H01M8/04589 ,  H01M8/04671 ,  H01M2008/1095

摘要： A system and method for detecting a low performing cell in a fuel cell stack using measured cell voltages. The method includes determining that the fuel cell stack is running, the stack coolant temperature is above a certain temperature and the stack current density is within a relatively low power range. The method further includes calculating the average cell voltage, and determining whether the difference between the average cell voltage and the minimum cell voltage is greater than a predetermined threshold. If the difference between the average cell voltage and the minimum cell voltage is greater than the predetermined threshold and the minimum cell voltage is less than another predetermined threshold, then the method increments a low performing cell timer. A ratio of the low performing cell timer and a system run timer is calculated to identify a low performing cell.

摘要翻译： 一种用于使用测量的电池电压来检测燃料电池堆中的低效电池的系统和方法。 该方法包括确定燃料电池堆运行，堆垛冷却剂温度高于一定温度，并且堆电流密度在相对低的功率范围内。 该方法还包括计算平均单元电压，以及确定平均单元电压和最小单元电压之间的差是否大于预定阈值。 如果平均电池电压和最小电池电压之间的差值大于预定阈值，并且最小电池电压小于另一预定阈值，则该方法增加低效率小区计时器。 计算低执行小区定时器和系统运行定时器的比率以识别低执行小区。