公开(公告)号：US07362077B2

公开(公告)日：2008-04-22

申请号：US11195855

申请日：2005-08-02

Applicant: Keming Chen

Inventor： Keming Chen

IPC: G05F1/00 ,  G05F1/24 ,  H02M3/335 ,  H02M7/5387 ,  H02M5/00 ,  H02M5/293

CPC classification number: H02M3/33569 ,  H02M1/36

Abstract: A boost control module operates semiconductor switches of a boost converter circuit in an avalanche mode to precharge a boost output capacitor. The boost control module comprises a switching module that complementarily transitions a first semiconductor switch and a second semiconductor switch between ON and OFF states when a current does not exceed a maximum current threshold. The switching module transitions the first semiconductor switch and the second semiconductor switch to the OFF state when the current exceeds the maximum current threshold. The switching module maintains the first semiconductor switch and the second semiconductor switch in the OFF state until at least one of the inductor current is less than or equal to a minimum current threshold.

Abstract translation: 升压控制模块以雪崩模式操作升压转换器电路的半导体开关，以对升压输出电容器进行预充电。 升压控制模块包括开关模块，当电流不超过最大电流阈值时，该开关模块在第一半导体开关和第二半导体开关之间在接通和断开状态之间互相转换。 当电流超过最大电流阈值时，开关模块将第一半导体开关和第二半导体开关转换到OFF状态。 开关模块将第一半导体开关和第二半导体开关保持在OFF状态，直到电感器电流中的至少一个小于或等于最小电流阈值。

公开(公告)号：US20070047171A1

公开(公告)日：2007-03-01

申请号：US11209559

申请日：2005-08-23

Applicant: Keming Chen

Inventor： Keming Chen

IPC: H01G2/00

CPC classification number: H02H9/001 ,  H01L27/0248 ,  H02H7/16

Abstract: A capacitor circuit with surge protection that is selectively connected between a voltage source and a device comprises a first capacitance element has one end that communicates with a first terminal of the voltage source. A first transistor has a first terminal that communicates with an opposite end of the first capacitance element and a second terminal that communicates with a second terminal of the voltage source. A control terminal of the first transistor communicates with a capacitor enable signal that provides a controlled turn-on to limit current surge and turns off the first transistor when voltage surge is detected.

Abstract translation: 具有选择性地连接在电压源和器件之间的具有浪涌保护的电容器电路包括具有与电压源的第一端连通的一端的第一电容元件。 第一晶体管具有与第一电容元件的相对端连通的第一端子和与电压源的第二端子连通的第二端子。 第一晶体管的控制端与电容器使能信号通信，该电容使能信号提供受控接通以限制电流浪涌，并在检测到电压浪涌时关断第一晶体管。

公开(公告)号：US07106605B2

公开(公告)日：2006-09-12

申请号：US10881213

申请日：2004-06-30

Applicant: Keming Chen ,  Lateef A. Kajouke ,  James F. Lazar

Inventor： Keming Chen ,  Lateef A. Kajouke ,  James F. Lazar

IPC: H02H7/125

CPC classification number: H02M3/28 ,  H02M3/33569

Abstract: A DC-DC converter comprises an input circuit that stores inductive energy that includes a first switch that releases the stored inductive energy. A transformer includes a primary winding that communicates with the input circuit and a secondary winding. An output circuit communicates with the secondary winding and that includes first and second output conductors and a first diode that communicates with one end of the secondary winding and the first output conductor. A second diode communicates with one end of the secondary winding and the second output conductor. A third diode communicates with an opposite end of the secondary winding and the first output conductor. A fourth diode communicates with an opposite end of the secondary winding and the second output conductor. A first capacitor is connected in parallel to the third diode. A second capacitor is connected in parallel to the fourth diode.

Abstract translation: DC-DC转换器包括存储电感能的输入电路，其包括释放所存储的感应能量的第一开关。 变压器包括与输入电路和次级绕组连通的初级绕组。 输出电路与次级绕组通信，并且包括第一和第二输出导体以及与次级绕组和第一输出导体的一端连通的第一二极管。 第二二极管与次级绕组和第二输出导体的一端连通。 第三二极管与次级绕组和第一输出导体的相对端连通。 第四二极管与次级绕组和第二输出导体的相对端连通。 第一电容器并联连接到第三二极管。 第二电容器并联连接到第四二极管。

公开(公告)号：US20050041438A1

公开(公告)日：2005-02-24

申请号：US10643732

申请日：2003-08-19

Applicant: Keming Chen ,  James Lazar ,  Lateef Kajouke

Inventor： Keming Chen ,  James Lazar ,  Lateef Kajouke

IPC: H02M3/28 ,  H02M3/335 ,  H02M7/5387

CPC classification number: H02M7/5387 ,  H02M3/33592 ,  Y02B70/1475

Abstract: A DC/DC converter includes a first leg and a second leg. A controller employs hard switching in the first leg to reduce the conduction loss. The controller employs zero voltage in the second leg to reduce the switching loss.

Abstract translation: DC / DC转换器包括第一支路和第二支路。 控制器在第一支路中采用硬切换以减少导通损耗。 控制器在第二支路采用零电压来减少开关损耗。

公开(公告)号：US06850921B1

公开(公告)日：2005-02-01

申请号：US09705008

申请日：2000-11-02

Applicant: Beverly Joyce Becker ,  Chi-Chin Wu ,  Gregory Allen Kaepp ,  Hassen Hammoud ,  Han C. Wang ,  Keming Chen ,  Nanxin Wang

Inventor： Beverly Joyce Becker ,  Chi-Chin Wu ,  Gregory Allen Kaepp ,  Hassen Hammoud ,  Han C. Wang ,  Keming Chen ,  Nanxin Wang

IPC: G06F15/18 ,  G06F17/50

CPC classification number: G06F17/5095

Abstract: A method (100) for cascading system level target to component level design objectives using machine learning and design synthesis techniques. The method (100) of the present invention uses machine learning techniques to build (106, 108) surrogate models from given system targets (102). The method then employs design synthesis methods to determine (110) a range of component level design objectives for the given system level targets using the surrogate models. The range of component level design objectives is fed back (112) to one of the surrogate models to determine (114) the component design objectives.

Abstract translation: 一种用于使用机器学习和设计合成技术将系统级目标级联到组件级设计目标的方法（100）。 本发明的方法（100）使用机器学习技术从给定的系统目标（102）构建（106,108）代理模型。 该方法然后使用设计合成方法来确定（110）使用代理模型的给定系统级目标的一系列组件级设计目标。 组件级设计目标的范围被反馈（112）到其中一个代理模型，以确定（114）组件设计目标。

公开(公告)号：US5828559A

公开(公告)日：1998-10-27

申请号：US794643

申请日：1997-02-03

Applicant: Keming Chen

Inventor： Keming Chen

IPC: H02M1/34 ,  H02M3/158 ,  H03K17/0814 ,  H02H7/12

CPC classification number: H02M1/34 ,  H02M3/158 ,  H03K17/08148 ,  H02M2001/342 ,  Y02B70/1491

Abstract: A soft switching device for electric power switching applications includes a switching element and a soft switching active snubber. The soft switching active snubber includes a capacitor, a rectifier and a soft switching active reset circuit. The capacitor connects in series with the rectifier and both of which connects across the switching element. The soft switching active reset circuit, connected across the rectifier as well as the capacitor, is responsive to a reset signal for active resetting of the capacitor within the normal switching cycle of the switching element. Energy absorbed by the capacitor is recovered to the input voltage source or to the load. This occurs contemporaneous with the power switching operation of the switching element. With the active snubber, soft switching is provided for both the switching element and a snubber switch within the active reset circuit, for an efficient and reliable circuit operation. The active snubber also allows additional controls for implementing an intelligent soft switching device. The soft switching device is a complete self-contained circuit. Its operation does not depend on any external circuit components. It can be used as an efficient, reliable, versatile and intelligent power switch in any kind of power switching applications. The active snubber and soft switching device introduce a new type of standard component for power electronics. They can be used in series or in parallel. The active snubber can also provide stress relief for a diode, a switching circuit and a mechanical switch.

Abstract translation: 用于电力开关应用的软开关装置包括开关元件和软开关有源缓冲器。 软开关有源缓冲器包括电容器，整流器和软开关有源复位电路。 电容器与整流器串联连接，两者都连接在开关元件上。 连接在整流器和电容器两端的软开关有源复位电路响应于复位信号，用于在开关元件的正常开关周期内有效地复位电容器。 电容吸收的能量被恢复到输入电压源或负载。 这与开关元件的电源开关操作同时发生。 利用有源缓冲器，为有效复位电路中的开关元件和缓冲开关提供软开关，以实现高效可靠的电路操作。 主动缓冲器还允许实现智能软开关设备的附加控制。 软开关器件是一个完整的独立电路。 其操作不依赖于任何外部电路组件。 它可以用作任何类型的电源开关应用中的高效，可靠，通用和智能的电源开关。 主动缓冲器和软开关器件引入了一种新型的电力电子标准元件。 它们可以串联或并联使用。 有源缓冲器还可以为二极管，开关电路和机械开关提供应力消除。

公开(公告)号：US08063826B2

公开(公告)日：2011-11-22

申请号：US12379189

申请日：2009-06-15

Applicant: Aitan Ameti ,  Keming Chen ,  Robert J. Fontana ,  Edward A. Richley ,  Belinda Turner

Inventor： Aitan Ameti ,  Keming Chen ,  Robert J. Fontana ,  Edward A. Richley ,  Belinda Turner

IPC: G01S3/02

CPC classification number: G01S5/021 ,  G01S5/0009 ,  G01S5/14

Abstract: Instead of normalizing time reference of independent spatially-located clocks using a reference tag transmission from known location, the present invention uses an interarrival time interval between a pulse pair of UWB pulses as a timing metric. Thus, a method of synchronizing spatially-located clocks or normalizing time indications thereof comprises transmitting a UWB pulse pair, determining at first and second monitoring stations a respective count value indicative of a locally measured time interval between received pulse pairs, determining a ratio between clock counts of first and second monitoring stations, and utilizing the ratio to determine clock skew, e.g., a timing correction to be applied to respective local clocks of the monitoring stations. A corresponding system comprises a reference tag transmitter that transmits a pulse pair of UWB pulses to define a time reference interval, a first independent receiver that receives, the pulse pair to generate a first count value indicative an interarrival interval between the pulse pair, a second independent receiver that receives the pulse pair to similarly generate a second count value, and a processor hub responsive to the count values to determine a ratio corresponding to the ratio of respective clock frequencies of the first and second receiver clocks. Once the correction is applied, time-of-arrival information from object tag transmissions may be used to determine object location with sub-foot position accuracies.

Abstract translation: 本发明使用来自已知位置的参考标签传输来代替使用独立空间位置的时钟的时间参考来标准化，本发明使用UWB脉冲对之间的间隔时间间隔作为定时度量。 因此，同步空间位置的时钟或归一化时间指示的方法包括发送UWB脉冲对，在第一和第二监视站确定指示接收的脉冲对之间本地测量的时间间隔的相应计数值，确定时钟之间的比率 第一和第二监测站的计数，并且利用该比率来确定时钟偏差，例如应用于监测站的各个本地时钟的定时校正。 相应的系统包括：参考标签发射器，其发射脉冲对UWB脉冲以定义时间参考间隔;第一独立接收机，接收所述脉冲对以产生指示所述脉冲对之间的间隔间隔的第一计数值;第二 接收脉冲对以类似地产生第二计数值的独立接收机，以及响应于计数值的处理器集线器，以确定对应于第一和第二接收机时钟的各个时钟频率的比率的比率。 一旦应用校正，可以使用来自对象标签传输的到达时间信息来确定具有子脚位置精度的对象位置。

公开(公告)号：US08058743B2

公开(公告)日：2011-11-15

申请号：US12241398

申请日：2008-09-30

Applicant: Keming Chen ,  Christopher P. Henze ,  George R. Woody

Inventor： Keming Chen ,  Christopher P. Henze ,  George R. Woody

IPC: B60L1/00

CPC classification number: B60L1/00 ,  B60L2210/14 ,  Y02T10/7225 ,  Y10T307/406

Abstract: Systems and/or apparatus are provided for automotive electrical systems having power converters that are coupled by using a transformer. An electrical system comprises a boost converter, wherein a first winding of a transformer is coupled between the input node of the boost converter and a first reference node. The boost converter further includes a switch coupled between the first reference node and a second reference node and a diode coupled between the first reference node and the output node of the boost converter. An energy source is coupled between the input node and the second reference node and a first electrical load is coupled between the output node and the second reference node. The electrical system further comprises a voltage converter having an input coupled to a second winding of the transformer, and a second electrical load coupled to the output of the voltage converter.

Abstract translation: 为具有通过使用变压器耦合的功率转换器的汽车电气系统提供系统和/或设备。 电气系统包括升压转换器，其中变压器的第一绕组耦合在升压转换器的输入节点和第一参考节点之间。 升压转换器还包括耦合在第一参考节点和第二参考节点之间的开关以及耦合在升压转换器的第一参考节点和输出节点之间的二极管。 能量源耦合在输入节点和第二参考节点之间，并且第一电负载耦合在输出节点和第二参考节点之间。 电气系统还包括电压转换器，其具有耦合到变压器的第二绕组的输入端和耦合到电压转换器的输出的第二电负载。

公开(公告)号：US20090243934A1

公开(公告)日：2009-10-01

申请号：US12379189

申请日：2009-06-15

Applicant: Aitan Ameti ,  Keming Chen ,  Robert J. Fontana ,  Edward A. Richley ,  Belinda Turner

Inventor： Aitan Ameti ,  Keming Chen ,  Robert J. Fontana ,  Edward A. Richley ,  Belinda Turner

IPC: G01S3/02

CPC classification number: G01S5/021 ,  G01S5/0009 ,  G01S5/14

Abstract: Instead of normalizing time reference of independent spatially-located clocks using a reference tag transmission from known location, the present invention uses an interarrival time interval between a pulse pair of UWB pulses as a timing metric. Thus, a method of synchronizing spatially-located clocks or normalizing time indications thereof comprises transmitting a UWB pulse pair, determining at first and second monitoring stations a respective count value indicative of a locally measured time interval between received pulse pairs, determining a ratio between clock counts of first and second monitoring stations, and utilizing the ratio to determine clock skew, e.g., a timing correction to be applied to respective local clocks of the monitoring stations. A corresponding system comprises a reference tag transmitter that transmits a pulse pair of UWB pulses to define a time reference interval, a first independent receiver that receives, the pulse pair to generate a first count value indicative an interarrival interval between the pulse pair, a second independent receiver that receives the pulse pair to similarly generate a second count value, and a processor hub responsive to the count values to determine a ratio corresponding to the ratio of respective clock frequencies of the first and second receiver clocks. Once the correction is applied, time-of-arrival information from object tag transmissions may be used to determine object location with sub-foot position accuracies.

Abstract translation: 本发明使用来自已知位置的参考标签传输来代替使用独立空间位置的时钟的时间参考来标准化，本发明使用UWB脉冲对之间的间隔时间间隔作为定时度量。 因此，同步空间位置的时钟或归一化时间指示的方法包括发送UWB脉冲对，在第一和第二监视站确定指示接收到的脉冲对之间本地测量的时间间隔的相应计数值，确定时钟之间的比率 第一和第二监测站的计数，并且利用该比率来确定时钟偏差，例如应用于监测站的各个本地时钟的定时校正。 相应的系统包括：参考标签发射器，其发射脉冲对UWB脉冲以定义时间参考间隔;第一独立接收机，接收所述脉冲对以产生指示所述脉冲对之间的间隔间隔的第一计数值;第二 接收脉冲对以类似地产生第二计数值的独立接收机，以及响应于计数值的处理器集线器，以确定对应于第一和第二接收机时钟的各个时钟频率的比率的比率。 一旦应用校正，可以使用来自对象标签传输的到达时间信息来确定具有子脚位置精度的对象位置。

公开(公告)号：US07492316B1

公开(公告)日：2009-02-17

申请号：US11480982

申请日：2006-07-06

Applicant: Aitan Ameti ,  Keming Chen ,  Robert J. Fontana ,  Edward A. Richley ,  Belinda Turner

Inventor： Aitan Ameti ,  Keming Chen ,  Robert J. Fontana ,  Edward A. Richley ,  Belinda Turner

IPC: G01S3/02

CPC classification number: G01S5/021 ,  G01S5/0009 ,  G01S5/14

Abstract: Instead of normalizing time reference of independent spatially-located clocks using a reference tag transmission from known location, the present invention uses an interarrival time interval between a pulse pair of UWB pulses as a timing metric. Thus, a method of synchronizing spatially-located clock or normalizing time indications thereof comprises transmitting a UWB pulse pair, determining at first and second monitoring stations a respective count value indicative of a locally measured time interval between received pulse pairs, determining a ratio between clock counts of first and second monitoring stations, and utilizing the ratio to determine clock skew, e.g., a timing correction to be applied to respective local clocks of the monitoring stations. A corresponding system comprises a reference tag transmitter that transmits a pulse pair of UWB pulses to define a time reference interval, a first independent receiver that receives the pulse pair to generate a first count value indicative an interarrival interval between the pulse pair, a second independent receiver that receives the pulse pair to similarly generate a second count value, and a processor hub responsive to the count values to determine a ratio corresponding to the ratio of respective clock frequencies of the first and second receiver clocks. Once the correction is applied, time-of-arrival information from object tag transmissions may be used to determine object location with sub-foot position accuracies.

Abstract translation: 本发明使用来自已知位置的参考标签传输来代替使用独立空间位置的时钟的时间参考来标准化，本发明使用UWB脉冲对之间的间隔时间间隔作为定时度量。 因此，同步空间位置的时钟或其归一化时间指示的方法包括：发送UWB脉冲对，在第一和第二监视站确定指示接收到的脉冲对之间本地测量的时间间隔的相应计数值，确定时钟之间的比率 第一和第二监测站的计数，并且利用该比率来确定时钟偏差，例如应用于监测站的各个本地时钟的定时校正。 相应的系统包括参考标签发射器，其发射脉冲对UWB脉冲以限定时间参考间隔;第一独立接收机，其接收脉冲对以产生指示脉冲对之间的间隔间隔的第一计数值，第二独立 接收器接收脉冲对以类似地产生第二计数值，以及响应于计数值的处理器集线器，以确定对应于第一和第二接收器时钟的各个时钟频率的比率的比率。 一旦应用校正，可以使用来自对象标签传输的到达时间信息来确定具有子脚位置精度的对象位置。