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    PITCH CONTROL SYSTEM AND METHOD FOR WIND TURBINE
    1.
    发明申请
    PITCH CONTROL SYSTEM AND METHOD FOR WIND TURBINE 审中-公开
    风力发电机的倾斜控制系统和方法

    公开(公告)号：US20120193917A1

    公开(公告)日：2012-08-02

    申请号：US13355469

    申请日：2012-01-20

    申请人： XI CHEN ,  Lei Li ,  Xuan Cai

    发明人： XI CHEN ,  Lei Li ,  Xuan Cai

    IPC分类号： H02P9/04

    CPC分类号： F03D7/0224 ,  F03D7/047 ,  F05B2240/40 ,  F05B2260/79 ,  Y02E10/723

    摘要： The invention discloses a pitch control system for a wind turbine and a method, comprising a main controller, a secondary controller, a motor and a pitch gearbox, wherein the main controller is connected with a plurality of the secondary controllers through a communication bus; each blade corresponds to one controller and at least two motors, and one pitch gearbox is driven by each motor. The main controller is used for calculating a pitch expected value according to wind speed as well as power and rotation speed of a generator; and the motor is driven by the secondary controller according to the pitch expected value, so as to drive the pitch gearbox and hence drive the blades to vary a pitch angle.

    摘要翻译： 本发明公开了一种风力发电机的变桨控制系统，包括主控制器，副控制器，电动机和变速齿轮箱，其中主控制器通过通信总线与多个次级控制器连接; 每个叶片对应于一个控制器和至少两个电动机，并且一个变速箱由每个电动机驱动。 主控制器用于根据风速以及发电机的功率和转速来计算音高预期值; 并且电动机根据俯仰期望值由次级控制器驱动，以便驱动变桨齿轮箱，从而驱动叶片来改变桨距角。

    Exhaust pipe
    2.
    外观设计
    Exhaust pipe 有权

    公开(公告)号：USD1029719S1

    公开(公告)日：2024-06-04

    申请号：US29849514

    申请日：2022-08-11

    申请人： Lei Li

    设计人： Lei Li

    摘要： FIG. 1 is a front and top perspective view of an exhaust pipe, showing my new design;
    FIG. 2 is a rear and bottom perspective view thereof;
    FIG. 3 is another front and top perspective view thereof;
    FIG. 4 is another rear and bottom perspective view thereof;
    FIG. 5 is a front elevation view thereof;
    FIG. 6 is a rear elevation view thereof;
    FIG. 7 is a left side elevation view thereof;
    FIG. 8 is a right side elevation view thereof;
    FIG. 9 is a top plan view thereof; and,
    FIG. 10 is a bottom plan view thereof.
    The broken lines in the figures illustrate portions of the exhaust pipe that form no part of the claimed design.

    Method of Detecting Source Change for File Level Incremental Backup
    3.
    发明申请
    Method of Detecting Source Change for File Level Incremental Backup 审中-公开

    公开(公告)号：US20190095286A1

    公开(公告)日：2019-03-28

    申请号：US15714366

    申请日：2017-09-25

    申请人： Zhenqiu Fang ,  Lei Li ,  Zhonghua Dang ,  Guangju Li

    发明人： Zhenqiu Fang ,  Lei Li ,  Zhonghua Dang ,  Guangju Li

    IPC分类号： G06F11/14

    摘要： A system and method are presented that identify new, modified, unchanged, and deleted files in an incremental backup through a file list maintained on the backup destination. The FileList is a flat file in which file information about each file on a source node is stored sequentially into the file. During a subsequent incremental backup, the FileList is read sequentially from the backup destination and is used to generate a search tree. A hash value based on the file path is the key to the search tree, with the file's modified time and size being hashed together to form the value of the tree's key-value pair. Files are examined on the source and compared to the key-value pairs in the search tree. Status information in the search tree is modified to indicate discovered files. Unmodified status information identifies files that have been deleted since the previous backup.

    Method and apparatus for transmitting and receiving data in orthogonal frequency division multiplexing system
    4.
    发明授权
    Method and apparatus for transmitting and receiving data in orthogonal frequency division multiplexing system 有权

    公开(公告)号：US10123327B2

    公开(公告)日：2018-11-06

    申请号：US14344926

    申请日：2011-09-19

    申请人： Yang Hu ,  Zhiping Lei ,  Lei Li ,  Jie Mao

    发明人： Yang Hu ,  Zhiping Lei ,  Lei Li ,  Jie Mao

    IPC分类号： H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W88/08

    摘要： Embodiments of the disclosure provide a method in a source node for transmitting data in an OFDM system in which data are transmitted on frequency bands from the source node to a destination node, the method comprising: selecting a set of frequency bands from available frequency bands in the OFDM system; and transmitting data in frequency domain on the selected set of frequency bands to the destination node. Embodiments of the disclosure further provide a method at a destination node for receiving data in an OFDM system in which data are received on frequency bands from a source node, the method comprising: determining a set of frequency bands of available frequency bands on which data are to be received in frequency domain; and receiving the data on the determined set of frequency bands from the source node. Corresponding apparatuses are also provided.

    Systems and methods for scalable topic detection in social media
    7.
    发明授权
    Systems and methods for scalable topic detection in social media 有权
    在社交媒体中扩展主题检测的系统和方法

    公开(公告)号：US09183293B2

    公开(公告)日：2015-11-10

    申请号：US13324391

    申请日：2011-12-13

    申请人： Lei Li ,  Wei Peng ,  Tong Sun

    发明人： Lei Li ,  Wei Peng ,  Tong Sun

    IPC分类号： G06F17/30 ,  G06Q30/02 ,  G06Q50/00

    CPC分类号： G06F17/30734 ,  G06F17/3071 ,  G06Q30/02 ,  G06Q50/01

    摘要： Embodiments generally relate to systems and methods for detecting topics in social media data. More particularly, the systems and methods can extract a concept hierarchy from a set of data, wherein the concept hierarchy comprises a plurality of layers. Further, the systems and methods can train topic models based on the content in each of the layers. Still further, the systems and methods can select the most appropriate topic model for social media data by balancing the complexity of the model and the accuracy of the topic detection result. Moreover, the systems and methods can use the most appropriate topic model to detect topics in social media data.

    摘要翻译： 实施例通常涉及用于检测社交媒体数据中的主题的系统和方法。 更具体地，系统和方法可以从一组数据中提取概念层次，其中概念层级包括多个层。 此外，系统和方法可以基于每个层中的内容来训练主题模型。 此外，系统和方法可以通过平衡模型的复杂性和主题检测结果的准确性来为社交媒体数据选择最合适的主题模型。 此外，系统和方法可以使用最合适的主题模型来检测社交媒体数据中的主题。

    Method for the production of ethylene glycol
    9.
    发明授权
    Method for the production of ethylene glycol 有权
    乙二醇生产方法

    公开(公告)号：US08962895B2

    公开(公告)日：2015-02-24

    申请号：US14001120

    申请日：2012-02-24

    申请人： Juntao Liu ,  Weimin Yang ,  Lei Li ,  Wanmin Wang ,  Linna Zhang ,  Haifeng Song

    发明人： Juntao Liu ,  Weimin Yang ,  Lei Li ,  Wanmin Wang ,  Linna Zhang ,  Haifeng Song

    IPC分类号： C07C29/149 ,  B01J8/06

    CPC分类号： C07C29/149 ,  B01J8/067 ,  B01J2208/0053 ,  Y02P20/52 ,  C07C31/202

    摘要： The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270° C., a weight hourly space velocity of the oxalate in the range from about 0.2 to about 5 h−1, a molar ratio of hydrogen to the oxalate in the range from about 40:1 to about 200:1 and a reaction pressure in the range from about 1.5 to about 10 MPa, to produce an effluent containing ethylene glycol, in which the reactor is a tube-array reactor using partitioned heat exchange and adopting outer and inner tubes configured in a double-tube structure to facilitate the heat exchange of the catalyst.

    摘要翻译： 本发明涉及使用包含草酸盐和含有铜和/或氧化铜的催化剂的原料生产乙二醇的方法，包括在反应器中在等温范围内的温度条件下将反应器与催化剂接触 约170至约270℃，草酸盐的重时空速在约0.2至约5小时-1的范围内，氢与草酸的摩尔比在约40:1至约200的范围内 ：1，反应压力在约1.5至约10MPa的范围内，以产生含有乙二醇的流出物，其中反应器是使用分隔热交换的管阵列反应器，并采用配置在双组分中的外管和内管， 管结构以促进催化剂的热交换。

    Method and Apparatus for Transmitting and Receiving Data in Orthogonal Frequency Division Multiplexing System
    10.
    发明申请
    Method and Apparatus for Transmitting and Receiving Data in Orthogonal Frequency Division Multiplexing System 审中-公开
    在正交频分复用系统中发送和接收数据的方法和装置

    公开(公告)号：US20140341139A1

    公开(公告)日：2014-11-20

    申请号：US14344926

    申请日：2011-09-19

    申请人： Yang Hu ,  Zhiping Lei ,  Lei Li ,  Jie Mao

    发明人： Yang Hu ,  Zhiping Lei ,  Lei Li ,  Jie Mao

    IPC分类号： H04W72/04 ,  H04L27/26

    CPC分类号： H04W72/0453 ,  H04L5/0044 ,  H04L5/0094 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/265 ,  H04W88/085

    摘要： Embodiments of the disclosure provide a method in a source node for transmitting data in an OFDM system in which data are transmitted on frequency bands from the source node to a destination node, the method comprising: selecting a set of frequency bands from available frequency bands in the OFDM system; and transmitting data in frequency domain on the selected set of frequency bands to the destination node. Embodiments of the disclosure further provide a method at a destination node for receiving data in an OFDM system in which data are received on frequency bands from a source node, the method comprising: determining a set of frequency bands of available frequency bands on which data are to be received in frequency domain; and receiving the data on the determined set of frequency bands from the source node. Corresponding apparatuses are also provided.

    摘要翻译： 本公开的实施例提供了一种在源节点中用于在OFDM系统中发送数据的方法，其中数据在频带上从源节点传送到目的地节点，该方法包括：从可用频带中选择一组频带 OFDM系统; 以及将所选择的频带组上的频域中的数据发送到目的地节点。 本公开的实施例还提供了一种在目的地节点处的用于在OFDM系统中接收数据的方法，其中在源节点上在频带上接收数据，该方法包括：确定数据的可用频带的一组频带 频域接收; 以及从源节点接收关于确定的频带集合的数据。 还提供了相应的装置。