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1. 发明申请

US20070285195A1 Direct flux control system for magnetic structures 审中-公开
标题翻译：磁结构直接磁通控制系统
公开(公告)号：US20070285195A1
公开(公告)日：2007-12-13
申请号：US11451953
申请日：2006-06-13
申请人： Thomas W. Nehl , Suresh Gopalakrishnan , Fang Deng
发明人： Thomas W. Nehl , Suresh Gopalakrishnan , Fang Deng
IPC分类号： H01F1/00
CPC分类号： H01F7/1844 , G01R33/14 , H01F7/1638 , H01F2007/1692
摘要： A method for controlling a magnetic structure including the steps of determining a flux associated with the magnetic structure and generating a control signal based, at least in part, upon the determined flux.
摘要翻译：一种用于控制磁性结构的方法，包括以下步骤：至少部分地基于所确定的磁通量来确定与所述磁性结构相关联的磁通并产生控制信号。

2. 发明授权

US10060399B2 Method and apparatus for optimum drive signal control of an electromagnetically-activated actuator 有权
公开(公告)号：US10060399B2
公开(公告)日：2018-08-28
申请号：US15135785
申请日：2016-04-22
申请人： Chandra S. Namuduri , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
发明人： Chandra S. Namuduri , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
IPC分类号： F02M51/06 , F02M63/00 , H02K33/16 , F02D41/20
CPC分类号： F02M51/0614 , F02D41/20 , F02D2041/1409 , F02D2041/2034 , F02D2041/2037 , F02D2041/2051 , F02D2041/2055 , F02D2041/2072 , F02M63/0017 , H02K33/16
摘要： An electromagnetically-activated actuator includes an electrical coil, an armature moveable between rest and actuated positions, and a bi-directional driver. A method for controlling an actuator event includes applying a supply voltage at a first polarity across the coil for a first duration to drive a forward current through the coil effective to move the armature away from the rest position. The forward current has a forward current peak at the end of the first duration. After the first duration, the supply voltage is applied at a second polarity across the coil for a second duration to drive a reverse current through the coil. The second duration terminates when the reverse current attains a predetermined reverse current peak, wherein the predetermined reverse current peak is coincident with the armature returning to the rest position.

3. 发明申请

US20170306907A1 METHOD AND APPARATUS FOR OPTIMUM DRIVE SIGNAL CONTROL OF AN ELECTROMAGNETICALLY-ACTIVATED ACTUATOR 审中-公开
公开(公告)号：US20170306907A1
公开(公告)日：2017-10-26
申请号：US15135785
申请日：2016-04-22
申请人： CHANDRA S. NAMUDURI , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
发明人： CHANDRA S. NAMUDURI , Suresh Gopalakrishnan , Avoki M. Omekanda , Thomas W. Nehl
IPC分类号： F02M51/06 , F02M63/00 , H02K33/16 , F02D41/20
CPC分类号： F02M51/0614 , F02D41/20 , F02D2041/1409 , F02D2041/2034 , F02D2041/2037 , F02D2041/2051 , F02D2041/2055 , F02D2041/2072 , F02M63/0017 , H02K33/16
摘要： An electromagnetically-activated actuator includes an electrical coil, an armature moveable between rest and actuated positions, and a bi-directional driver. A method for controlling an actuator event includes applying a supply voltage at a first polarity across the coil for a first duration to drive a forward current through the coil effective to move the armature away from the rest position. The forward current has a forward current peak at the end of the first duration. After the first duration, the supply voltage is applied at a second polarity across the coil for a second duration to drive a reverse current through the coil. The second duration terminates when the reverse current attains a predetermined reverse current peak, wherein the predetermined reverse current peak is coincident with the armature returning to the rest position.

4. 发明授权

US09135284B1 Composite execution of rename operations in wide area file systems 有权
标题翻译：在广域文件系统中复合执行重命名操作
公开(公告)号：US09135284B1
公开(公告)日：2015-09-15
申请号：US12047567
申请日：2008-03-13
申请人： Hrishikesh A. Vidwans , Suresh Gopalakrishnan , Shirish H. Phatak
发明人： Hrishikesh A. Vidwans , Suresh Gopalakrishnan , Shirish H. Phatak
IPC分类号： G06F17/30
CPC分类号： G06F17/30117 , G06F17/30123 , G06F17/30203 , G06F17/30309 , G06F17/30371 , H04L67/1097
摘要： Methods, apparatuses, and systems directed to improving shared file access in wide area network file systems. In a particular implementation, one or more elements of a wide area file system cooperate to keep an original file intact on a remote file server until a new copy of the same file is flushed to the remote file server. In a particular implementation, rename operations identifying a source and a target in connection with application-level save operations are executed as two composite operations including creation of the target, and a delayed deletion of the source. The delay after which the source is deleted can be configured to be just large enough so that the application save operation on a local cache can be completed.
摘要翻译：旨在改善广域网文件系统中共享文件访问的方法，设备和系统。在特定实现中，广域文件系统的一个或多个元素协作以将原始文件保持在远程文件服务器上，直到相同文件的新副本被刷新到远程文件服务器。在特定实现中，重新命名与应用程序级保存操作相关联的源和目标的操作被执行为包括目标的创建以及源的延迟删除的两个复合操作。源被删除的延迟可以被配置为足够大，以便可以完成本地缓存上的应用程序保存操作。

5. 发明授权

US08606447B2 Method and apparatus to operate a powertrain system including an electric machine having a disconnected high-voltage battery 有权
标题翻译：用于操作包括具有断开的高压电池的电机的动力系统的方法和装置
公开(公告)号：US08606447B2
公开(公告)日：2013-12-10
申请号：US13113306
申请日：2011-05-23
申请人： Chandra S. Namuduri , Suresh Gopalakrishnan , Keith D. Van Maanen , Bryan M. Ludwig , Bon Ho Bae
发明人： Chandra S. Namuduri , Suresh Gopalakrishnan , Keith D. Van Maanen , Bryan M. Ludwig , Bon Ho Bae
IPC分类号： B60L11/00 , B60L11/04
CPC分类号： B60L11/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , B60W20/50 , B60W50/023 , B60W50/029 , B60W2050/0027 , F02N11/006 , Y02T10/6286 , Y02T10/70 , Y02T10/7077
摘要： A powertrain system includes an electric motor/generator unit. Upon detecting an open high-voltage switch associated with a high-voltage DC electrical bus, low-voltage electrical power is employed to energize the high-voltage DC electrical bus, control parameters are adjusted to operate the electric motor/generator unit in a fault tolerant electric generation mode, an internal combustion engine is operated to spin the electric motor/generator unit, and the electric motor/generator unit is operated in the fault tolerant electric generation mode.
摘要翻译：动力系统包括电动机/发电机单元。当检测到与高压DC电气总线相关联的开放式高压开关时，采用低压电力来激励高压DC电气总线，调整控制参数以使电动机/发电机单元处于故障状态操作内燃机来旋转电动发电机组，电动机/发电机组以容错发电模式运转。

6. 发明申请

US20120303189A1 METHOD AND APPARATUS TO OPERATE A POWERTRAIN SYSTEM INCLUDING AN ELECTRIC MACHINE HAVING A DISCONNECTED HIGH-VOLTAGE BATTERY 有权
标题翻译：操作动力系统的方法和装置，包括具有断开的高压电池的电机
公开(公告)号：US20120303189A1
公开(公告)日：2012-11-29
申请号：US13113306
申请日：2011-05-23
申请人： Chandra S. Namuduri , Suresh Gopalakrishnan , Keith D. Van Maanen , Bryan M. Ludwig , Bon Ho Bae
发明人： Chandra S. Namuduri , Suresh Gopalakrishnan , Keith D. Van Maanen , Bryan M. Ludwig , Bon Ho Bae
IPC分类号： B60W20/00
CPC分类号： B60L11/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , B60W20/50 , B60W50/023 , B60W50/029 , B60W2050/0027 , F02N11/006 , Y02T10/6286 , Y02T10/70 , Y02T10/7077
摘要： A powertrain system includes an electric motor/generator unit. Upon detecting an open high-voltage switch associated with a high-voltage DC electrical bus, low-voltage electrical power is employed to energize the high-voltage DC electrical bus, control parameters are adjusted to operate the electric motor/generator unit in a fault tolerant electric generation mode, an internal combustion engine is operated to spin the electric motor/generator unit, and the electric motor/generator unit is operated in the fault tolerant electric generation mode.
摘要翻译：动力系统包括电动机/发电机单元。当检测到与高压DC电气总线相关联的开放式高压开关时，采用低压电力来激励高压DC电气总线，调整控制参数以使电动机/发电机单元处于故障状态操作内燃机来旋转电动发电机组，电动机/发电机组以容错发电模式运转。

7. 发明授权

US07973504B2 Electric power steering control 有权
标题翻译：电动助力转向控制
公开(公告)号：US07973504B2
公开(公告)日：2011-07-05
申请号：US12179954
申请日：2008-07-25
申请人： Chandra S. Namuduri , Scott R. Kloess , Suresh Gopalakrishnan , Yat-Chung Tang
发明人： Chandra S. Namuduri , Scott R. Kloess , Suresh Gopalakrishnan , Yat-Chung Tang
IPC分类号： H02P7/00
CPC分类号： B62D5/049 , B62D5/0484
摘要： A method for improving a failure mode diagnostic of an electric power steering system by overcoming a motor electric lock condition due to position sensor signal corruption or other motor faults. If certain conditions are met, the method determines that the motor is in an electric lock condition, and then reduces a torque current command to the motor so that it is able to be rotated by a vehicle hand-wheel. Once the motor is able to be rotated, then the method determines whether certain conditions have been met to determine whether the position sensor is malfunctioning.
摘要翻译：一种用于通过克服由于位置传感器信号损坏或其他电动机故障引起的电动机电锁状态来改善电动助力转向系统的故障模式诊断的方法。如果满足某些条件，则该方法确定电动机处于电锁状态，然后减小对电动机的转矩电流指令，使其能够通过车辆手轮旋转。一旦电机能够旋转，则该方法确定是否满足某些条件以确定位置传感器是否发生故障。

8. 发明授权

US07962600B2 WAFS disconnected-mode read-write access 有权
标题翻译： WAFS断开模式读写访问
公开(公告)号：US07962600B2
公开(公告)日：2011-06-14
申请号：US12703295
申请日：2010-02-10
申请人： Hrishikesh A. Vidwans , Suresh Gopalakrishnan , Shirish H. Phatak , Murali Rangarajan
发明人： Hrishikesh A. Vidwans , Suresh Gopalakrishnan , Shirish H. Phatak , Murali Rangarajan
IPC分类号： G06F15/173
CPC分类号： H04L67/06 , H04L67/1095 , H04L67/2861
摘要： The present invention, in particular embodiments, provides methods, apparatuses and systems directed to providing a Wide Area File System that is robust against network connectivity issues. In particular implementations, the present invention provides a WAFS disconnected-mode read-write access that provides for a more seamless user experience against WAN or other network connectivity failures. Specific embodiments provide for management, at a network device such as an EFG node, of file objects previously opened during a connected state with a remote file server appliance, creation of new file objects during a disconnected state and re-synchronization of those file objects (data and meta-data) when a connection becomes available.
摘要翻译：本发明在特定实施例中提供了针对网络连接问题提供鲁棒的广域文件系统的方法，装置和系统。在特定实施方式中，本发明提供了一种WAFS断开模式读写访问，为WAN或其他网络连接故障提供更无缝的用户体验。具体实施例提供了在诸如EFG节点的网络设备处管理在与远程文件服务器设备的连接状态期间先前打开的文件对象，在断开状态期间创建新文件对象以及重新同步这些文件对象数据和元数据）。

9. 发明授权

US07786687B2 Apparatus and method for control of an active front steering (AFS) system 有权
标题翻译：用于控制主动前转向（AFS）系统的装置和方法
公开(公告)号：US07786687B2
公开(公告)日：2010-08-31
申请号：US12109676
申请日：2008-04-25
申请人： Chandra S. Namuduri , Suresh Gopalakrishnan , Robert R. Bolio , Ross Feller , Balarama V. Murty
发明人： Chandra S. Namuduri , Suresh Gopalakrishnan , Robert R. Bolio , Ross Feller , Balarama V. Murty
IPC分类号： H02P1/04 , H02P6/04
CPC分类号： B62D5/046
摘要： A motor control strategy for a motor in a front steering system for a vehicle that reduces vibrations from the motor being transferred to a vehicle hand-wheel. The control strategy also includes operating the electric motor in a commutation freeze mode if a position error signal is less than a first predetermined threshold by sending signals to coils of the motor to prevent to the motor from rotating, operating the electric motor in a commutation normal mode if the position error signal is greater than a second predetermined threshold that is greater than the first predetermined threshold, and operating the electric motor in an angle step mode if the position error signal is between an intermediate threshold and the second threshold where the angle step mode provides a signal to the motor to move the motor forward or backward a predetermined number of motor steps, one step at a time.
摘要翻译：一种用于车辆的前转向系统中的电动机的电动机控制策略，其减少被传递到车辆手轮的电动机的振动。控制策略还包括如果位置误差信号小于第一预定阈值，则通过向马达的线圈发送信号以防止马达旋转，以换向正常方式操作电动机，以换相冻结模式操作电动机模式，如果位置误差信号大于大于第一预定阈值的第二预定阈值，并且如果位置误差信号在中间阈值和第二阈值之间，角度步长模式下操作电动机，其中角度步模式向马达提供信号以使电机向前或向后移动预定数量的马达步骤，一次一步。

10. 发明授权

US07205772B2 Arc fault detector and method 失效
标题翻译：电弧故障检测器及方法
公开(公告)号：US07205772B2
公开(公告)日：2007-04-17
申请号：US11312929
申请日：2005-12-20
申请人： Malakondaiah Naidu , Thomas J Schoepf , Suresh Gopalakrishnan
发明人： Malakondaiah Naidu , Thomas J Schoepf , Suresh Gopalakrishnan
IPC分类号： G01R31/08
CPC分类号： H02H1/0015 , G01R31/025 , H02H3/44
摘要： An arc fault detector includes a shunt resistor deployed in a protected circuit, an arc discriminator sensing voltages across the shunt resistor and producing an arc indication deduced from current variations associated with parallel and series arc faults, a signal transformer buffering the arc detection signal and producing a pulse, a switch transient detector sensing a voltage differential across load switches and producing a pulsed switch transient signal when the voltage differential across load switches exceeds a reference value, a line interrupter, such as a static relay, a switch controller including logic gates generating a trip signal based on predetermined criteria, and a manual switch for resetting the line interrupter. An embodiment comprises a voltage sensing coil enveloping a toroidal core to detect current variations in conductors passing through the core.
摘要翻译：电弧故障检测器包括部署在受保护电路中的分流电阻器，电弧鉴别器感测分流电阻器两端的电压并产生从与并联和串联电弧故障相关联的电流变化推断出的电弧指示;信号变压器缓冲电弧检测信号并产生脉冲，开关瞬态检测器，当负载开关上的电压差超过参考值时，检测负载开关两端的电压差，并产生脉冲开关瞬态信号;线路断续器，如静态继电器;开关控制器，包括逻辑门产生基于预定标准的跳闸信号，以及用于复位线路断路器的手动开关。一个实施例包括一个包围环形磁芯的电压感测线圈，以检测通过磁芯的导体的电流变化。

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