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    Methods for parts procurement quantity determination where demand is uncertain for the product in which the parts are used
    34.
    发明授权
    Methods for parts procurement quantity determination where demand is uncertain for the product in which the parts are used 失效
    使用零件的产品需求不确定的零件采购数量确定方法

    公开(公告)号：US5287267A

    公开(公告)日：1994-02-15

    申请号：US698632

    申请日：1991-05-10

    Applicant: Rangarajan Jayaraman ,  Robin Roundy ,  Ramesh Srinivasan

    Inventor： Rangarajan Jayaraman ,  Robin Roundy ,  Ramesh Srinivasan

    IPC: G06Q10/06 ,  G06Q10/08 ,  G06Q30/02 ,  G06F15/24

    CPC classification number: G06Q10/06 ,  G06Q10/087 ,  G06Q30/0202

    Abstract: Methods are described for predicting parts procurement requirements for products over a plurality of time periods, with certain of the parts being common to a plurality of products. The actual demand for the products is unknown, but the method assures that a specified service level is met for all products and minimizes expected excess part inventories. The methods are provided with inputs which, among others, includes lists of parts for each product, prices for the parts, and demand forecasts for each product in each time period, each forecast in the form of a mean and standard deviation. The description of the problem includes an objective function of minimizing expected excess inventory while satisfying the constraint that a specified service level be achieved. The problem is transformed into an unconstrained problem through the use of a Lagrange multiplier. The solution is achieved by performing a one parametric search on the value of the multiplier. The solution may achieve higher service levels than specified. Additional methods are described for improving the procurement decisions to more closely meet the service requirement.

    Abstract translation: 描述了用于预测多个时间段内的产品的零件采购要求的方法，其中某些部件对于多个产品是共同的。 对产品的实际需求是未知的，但是该方法确保所有产品达到指定的服务水平，并将预期的超量部件库存最小化。 这些方法提供了输入，其中包括每个产品的零件清单，零件的价格和每个时间段内每个产品的需求预测，每个预测以平均值和标准偏差的形式。 该问题的描述包括最小化预期超额库存的目标函数，同时满足实现指定服务水平的约束。 通过使用拉格朗日乘数将问题转化为无约束的问题。 该解决方案是通过对乘数值执行一个参数搜索来实现的。 该解决方案可能达到比指定的更高的服务水平。 描述了用于改进采购决策以更紧密地满足服务要求的其他方法。

    Method and system for communicating digital voice data
    37.
    发明授权
    Method and system for communicating digital voice data 有权
    用于传送数字语音数据的方法和系统

    公开(公告)号：US08204006B2

    公开(公告)日：2012-06-19

    申请号：US11440969

    申请日：2006-05-25

    Applicant: Ramesh Srinivasan

    Inventor： Ramesh Srinivasan

    IPC: H04W4/00 ,  H04J3/16

    CPC classification number: H04L65/1059 ,  H04B3/23 ,  H04M7/0069

    Abstract: Methods and systems have been provided for communicating digital voice data. According to various embodiments of the invention, a user interface is provided at a network device in the presence of DSP resources. Selection is made by the user interface about whether to use the DSP resources. Based on the selection, the digital voice data is communicated. Selection of bypassing a DSP resource is made by default if no DSP resources are present.

    Abstract translation: 已经提供了用于传送数字语音数据的方法和系统。 根据本发明的各种实施例，在存在DSP资源的情况下，在网络设备处提供用户接口。 用户界面选择是否使用DSP资源。 基于选择，传达数字语音数据。 如果不存在DSP资源，则默认情况下选择旁路DSP资源。

    Ripple Cancellation
    38.
    发明申请
    Ripple Cancellation 有权
    波纹取消

    公开(公告)号：US20110278935A1

    公开(公告)日：2011-11-17

    申请号：US13154888

    申请日：2011-06-07

    Applicant: Ranganathan Gurunathan ,  Ramesh Srinivasan ,  Pavana Kumar

    Inventor： Ranganathan Gurunathan ,  Ramesh Srinivasan ,  Pavana Kumar

    IPC: H02J1/00 ,  H01M8/24

    CPC classification number: H02M7/497 ,  H02M1/14 ,  Y10T307/685

    Abstract: Systems, methods and devices for power generation systems are described. In particular, embodiments of the invention relate to the architecture of power conditioning systems for use with fuel cells and methods used therein. More particularly, embodiments of the present invention relate to methods and systems usable to reduce ripple currents in fuel cells.

    Abstract translation: 描述了用于发电系统的系统，方法和装置。 特别地，本发明的实施例涉及用于燃料电池的功率调节系统的结构及其中使用的方法。 更具体地，本发明的实施例涉及可用于减少燃料电池中的纹波电流的方法和系统。

    Uninterruptible fuel cell system
    40.
    发明申请
    Uninterruptible fuel cell system 有权
    不间断燃料电池系统

    公开(公告)号：US20090273240A1

    公开(公告)日：2009-11-05

    申请号：US12149488

    申请日：2008-05-02

    Applicant: Ranganathan Gurunathan ,  Ramesh Srinivasan ,  Ame Watson Ballantine

    Inventor： Ranganathan Gurunathan ,  Ramesh Srinivasan ,  Ame Watson Ballantine

    IPC: H02J9/00

    CPC classification number: H02J9/062 ,  H02J2001/004 ,  Y02B10/72 ,  Y02B90/14 ,  Y10T307/615 ,  Y10T307/625

    Abstract: An exemplary method of providing electrical power is provided. A first alternating current is received from a grid. The first alternating current is converted to a first direct current using a first inverter in electrical communication with the grid. The first inverter is also in electrical communication with a fuel cell system. The first direct current is converted to a second alternating current using a second inverter, and the second alternating current is provided to a load.

    Abstract translation: 提供了一种提供电力的示例性方法。 从网格接收第一交流电流。 使用与电网电连通的第一逆变器将第一交流电转换为第一直流电。 第一逆变器还与燃料电池系统电连通。 使用第二反相器将第一直流电流转换为第二交流电，并将第二交流电提供给负载。

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