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11. 发明授权

US08497664B2 High efficiency multi-phase generator 有权
标题翻译：高效率多相发电机
公开(公告)号：US08497664B2
公开(公告)日：2013-07-30
申请号：US12622198
申请日：2009-11-19
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02P11/00 , H02P9/00
CPC分类号： H02M7/219
摘要： A generator system that includes a six-phase AC machine and an active rectifier bridge employing low on-resistance switches, such as MOSFET switches, for converting the AC current from the machine to a DC current. The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the six-phase current flow. The system determines the phase-to-ground voltages of the machine for inputs to the switch control circuit. The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages. The control circuit uses a specific control scheme to determine if each of the phase-to-phase voltages is above or below first and second predetermined threshold voltages, where if the phase-to-phase voltage is above the first threshold voltage, the control circuit closes the switch, and if the phase-to-phase voltage is below the second threshold voltage, the control circuit opens the switch.
摘要翻译：一种发电机系统，其包括六相交流电机和采用低导通电阻开关（例如MOSFET开关）的有源整流桥，用于将来自机器的交流电流转换为直流电流。该系统还包括开关控制电路，以与六相电流流同步地切换MOSFET开关。该系统确定机器的开关控制电路输入的相对地电压。控制电路根据相对地电压来计算相间电压。控制电路使用特定的控制方案来确定每个相间电压是否高于或低于第一和第二预定阈值电压，其中如果相间电压高于第一阈值电压，则控制电路关闭开关，并且如果相间电压低于第二阈值电压，则控制电路打开开关。

12. 发明授权

US08448952B2 Vehicle with active-regenerative suspension 有权
标题翻译：具有主动再生悬架的车辆
公开(公告)号：US08448952B2
公开(公告)日：2013-05-28
申请号：US13118922
申请日：2011-05-31
申请人： Liviu Serbu , Chandra S. Namuduri , Christopher J Mettrick , Joseph K Moore
发明人： Liviu Serbu , Chandra S. Namuduri , Christopher J Mettrick , Joseph K Moore
IPC分类号： B60G17/04 , F16F15/03
CPC分类号： B60G17/0195 , B60G2300/50 , B60G2300/60 , B60K6/20
摘要： In accordance with an exemplary embodiment, an active suspension system having a regenerative actuator is provided for an electric or hybrid electric vehicle. The system comprises a drive system including a battery mounted to a chassis and a controller coupled to the drive system. The controller also couples to a suspension system between the chassis and at least one wheel of the vehicle. The suspension system includes an actuator having an electric motor providing energy by converting linear movement of a ball screw into rotational movement of a rotor having a hollow core permitting at least a portion of the ball screw to translate within the rotor during operation of the actuator.
摘要翻译：根据示例性实施例，为电动或混合动力电动车辆提供具有再生致动器的主动悬架系统。该系统包括驱动系统，其包括安装到底盘的电池和耦合到驱动系统的控制器。控制器还耦合到底盘与车辆的至少一个车轮之间的悬挂系统。悬架系统包括致动器，其具有通过将滚珠丝杠的线性运动转换成具有中空芯的转子的旋转运动来提供能量的电动机，其允许至少一部分滚珠丝杠在致动器的操作期间在转子内平移。

13. 发明授权

US08392069B2 Method for managing faults in a magneto-rheological hydraulic power steering system 有权
标题翻译：用于管理磁流变液压动力转向系统中的故障的方法
公开(公告)号：US08392069B2
公开(公告)日：2013-03-05
申请号：US13362483
申请日：2012-01-31
申请人： Balarama V. Murty , Suresh Gopalakrishnan , Kenneth J. Shoemaker , Chandra S. Namuduri , Bradley Bezzina , Ebrahim Handy
发明人： Balarama V. Murty , Suresh Gopalakrishnan , Kenneth J. Shoemaker , Chandra S. Namuduri , Bradley Bezzina , Ebrahim Handy
IPC分类号： B62D5/30 , B62D5/04
CPC分类号： B62D5/063 , B62D5/065 , F04C14/08
摘要： A system and method for managing faults occurring in a power steering system in a vehicle is disclosed that has particular application for an MRHPS system to provide reliable functioning of the power steering system. The method includes detecting a fault condition in the MRHPS system and selecting a safe mode from a plurality of predetermined safe modes based on the fault condition. The plurality of predetermined safe modes include a normal operation mode, an engine speed follow mode, a manual mode, a fixed duty cycle mode and a voltage control mode. If a fault condition is detected, the method applies the safe mode to manage the fault condition.
摘要翻译：公开了一种用于管理在车辆中的动力转向系统中发生的故障的系统和方法，其具有用于提供动力转向系统的可靠功能的MRHPS系统的特定应用。该方法包括检测MRHPS系统中的故障状况，并根据故障状况从多个预定的安全模式中选择安全模式。多个预定的安全模式包括正常操作模式，发动机速度跟随模式，手动模式，固定占空比模式和电压控制模式。如果检测到故障条件，则采用安全模式管理故障状态。

14. 发明授权

US08272214B2 Shape memory alloy cables 有权
标题翻译：形状记忆合金电缆
公开(公告)号：US08272214B2
公开(公告)日：2012-09-25
申请号：US12397482
申请日：2009-03-04
申请人： Nilesh D. Mankame , John Andrew Shaw , Benjamin Reedlunn , Alan L. Browne , Xiujie Gao , Paul W. Alexander , Jan H. Aase , Nancy L. Johnson , Kenneth A. Strom , Sanjeev M. Naik , Chandra S. Namuduri , Robin Stevenson , William R. Rodgers , John C. Ulicny , Christopher P. Henry , Paul E. Krajewski , Ravindra Brammajyosula
发明人： Nilesh D. Mankame , John Andrew Shaw , Benjamin Reedlunn , Alan L. Browne , Xiujie Gao , Paul W. Alexander , Jan H. Aase , Nancy L. Johnson , Kenneth A. Strom , Sanjeev M. Naik , Chandra S. Namuduri , Robin Stevenson , William R. Rodgers , John C. Ulicny , Christopher P. Henry , Paul E. Krajewski , Ravindra Brammajyosula
IPC分类号： F01B29/10 , F02G1/04
CPC分类号： D07B5/00 , D07B1/0673 , D07B2201/2009 , D07B2205/3085 , Y10T428/249922 , D07B2801/10
摘要： A cable adapted for use as an actuator, adaptive structural member, or damper, includes a plurality of longitudinally inter-engaged and cooperatively functioning shape memory alloy wires.
摘要翻译：适于用作致动器，自适应结构构件或阻尼器的电缆包括多个纵向相互接合和协同工作的形状记忆合金线。

15. 发明申请

US20120194040A1 High Torque Density and Low Torque Ripple Actuator System 审中-公开
标题翻译：高扭矩密度和低扭矩波纹致动器系统
公开(公告)号：US20120194040A1
公开(公告)日：2012-08-02
申请号：US13017331
申请日：2011-01-31
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02K11/04
CPC分类号： H02K3/28 , H02K21/16
摘要： A permanent magnet electric machine drive system that includes a plurality of magnets for generating a first magnetic field and a stator is disposed radially outward from the plurality of magnets for generating a magnetic field. The stator includes a plurality of stator poles separated by slots with each respective stator pole having a concentrated winding with a respective number of turns formed around each respective stator pole. Each respective concentrated winding within the stator comprising non-overlapping phases. The concentrated windings form a dual three-phase winding configuration that includes a first set of three-balanced phase windings and a second set of three-balanced phase windings. The first set of three-balanced phase windings is phase shifted in the range of 15 to 45 electrical degrees from the second set of three-balanced phase windings for reducing the torque ripple.
摘要翻译：包括用于产生第一磁场的多个磁体和定子的永磁电机驱动系统从多个磁体径向向外设置，用于产生磁场。定子包括由槽分开的多个定子极，每个相应的定子极具有集中的绕组，其中每个相应的定子极周围形成相应的匝数。定子内的每个相应的集中绕组包括非重叠相。集中绕组形成双重三相绕组配置，其包括第一组三平衡相绕组和第二组三平衡相绕组。第三组三相绕组与第三组三相绕组的相位偏移在15至45度的范围内，以减小转矩波动。

16. 发明申请

US20120181854A1 METHOD AND APPARATUS FOR ELECTRIC POWER MANAGEMENT IN A VEHICLE 有权
标题翻译：车辆电力管理的方法与装置
公开(公告)号：US20120181854A1
公开(公告)日：2012-07-19
申请号：US13006542
申请日：2011-01-14
申请人： Suresh Gopalakrishnan , Chandra S. Namuduri , Mark C. Hoinka , Sanjeev M. Naik , Lei Hao
发明人： Suresh Gopalakrishnan , Chandra S. Namuduri , Mark C. Hoinka , Sanjeev M. Naik , Lei Hao
IPC分类号： B60L1/00
CPC分类号： B60L11/1861 , B60L11/1868 , B60L2210/10 , B60L2240/12 , B60L2240/545 , Y02T10/7016 , Y02T10/7044 , Y02T10/7066 , Y02T10/7216
摘要： An on-vehicle DC/DC converter transforms high-voltage electric power originating from an on-vehicle high-voltage source to low-voltage electric power at a regulated voltage level. The low-voltage electric power is distributed by a low-voltage bus. A method for operating the DC/DC converter includes monitoring a state of charge and a temperature of a low-voltage battery connected to the low-voltage bus, setting a DC/DC converter command to a nominal voltage level as a function of the state of charge and temperature of the low-voltage battery, monitoring a total low-voltage electric load, and adjusting the DC/DC converter command to a minimum low-voltage reference voltage when the vehicle is operating below a predetermined speed and the total low-voltage electric load is greater than a predetermined load.
摘要翻译：车载DC / DC转换器将来自车载高压源的高压电力以稳定的电压水平转换为低压电力。低压电力由低压母线分配。用于操作DC / DC转换器的方法包括监视与低压总线连接的低电压电池的充电状态和温度，将DC / DC转换器命令设置为作为状态的函数的标称电压电平的低压电池的充电和温度，监测总的低压电负载，并且当车辆运行低于预定速度时，将DC / DC转换器命令调整到最小的低电压参考电压，电压电负载大于预定负载。

17. 发明授权

US08020650B2 Control of a starter-alternator during a high-voltage battery fault condition 有权
标题翻译：在高压电池故障状态下控制起动器交流发电机
公开(公告)号：US08020650B2
公开(公告)日：2011-09-20
申请号：US12407143
申请日：2009-03-19
申请人： Keith D. Van Maanen , Sean E. Gleason , Chandra S. Namuduri , Steven V. Wybo
发明人： Keith D. Van Maanen , Sean E. Gleason , Chandra S. Namuduri , Steven V. Wybo
IPC分类号： B60W10/00 , B60L9/00
CPC分类号： B60L3/0046 , B60L11/005 , B60L11/14 , B60L2210/40 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241
摘要： A method sustains auxiliary power generation aboard a mild hybrid electric vehicle (HEV) in response to a high-voltage (HV) electrical fault condition and executes one of a pair of default limp-home modes depending on the state of the engine at the time of the fault. Each limp-home mode sustains auxiliary power generation during the fault, and at least one mode charges capacitors in the HV bus circuit to provide magnetizing current to a motor generator unit (MGU). An HEV includes a controller and algorithm for sustaining auxiliary power generation during the above fault condition, with the algorithm adapted to control output of an auxiliary power module (APM) and execute one of a pair of default limp-home modes, including a mode in which the APM charges the capacitors to enable a power inverter module (PIM) to provide an initial excitation current to the MGU after the starter motor restarts the engine.
摘要翻译：一种方法是在温和的混合动力电动汽车（HEV）的基础上，在高电压（HV）的电气故障条件下进行辅助发电，并根据发动机的状态执行一对默认的跛行家庭模式的错误。每个跛脚家庭模式在故障期间保持辅助发电，并且至少一个模式对HV总线电路中的电容器充电以向电动发电机单元（MGU）提供磁化电流。 HEV包括用于在上述故障状态期间维持辅助发电的控制器和算法，该算法适用于控制辅助电源模块（APM）的输出，并执行一对默认跛行模式，其中包括一种模式其中APM对电容器充电，以使电源逆变器模块（PIM）在起动器电动机重新起动发动机之后向MGU提供初始励磁电流。

18. 发明申请

US20110116291A1 HIGH EFFICIENCY MULTI-PHASE GENERATOR 有权
标题翻译：高效率多相发电机
公开(公告)号：US20110116291A1
公开(公告)日：2011-05-19
申请号：US12622198
申请日：2009-11-19
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02M7/155
CPC分类号： H02M7/219
摘要： A generator system that includes a six-phase AC machine and an active rectifier bridge employing low on-resistance switches, such as MOSFET switches, for converting the AC current from the machine to a DC current. The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the six-phase current flow. The system determines the phase-to-ground voltages of the machine for inputs to the switch control circuit. The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages. The control circuit uses a specific control scheme to determine if each of the phase-to-phase voltages is above or below first and second predetermined threshold voltages, where if the phase-to-phase voltage is above the first threshold voltage, the control circuit closes the switch, and if the phase-to-phase voltage is below the second threshold voltage, the control circuit opens the switch.
摘要翻译：一种发电机系统，其包括六相交流电机和采用低导通电阻开关（例如MOSFET开关）的有源整流桥，用于将来自机器的交流电流转换为直流电流。该系统还包括开关控制电路，以与六相电流流同步地切换MOSFET开关。该系统确定机器的开关控制电路输入的相对地电压。控制电路根据相对地电压来计算相间电压。控制电路使用特定的控制方案来确定每个相间电压是否高于或低于第一和第二预定阈值电压，其中如果相间电压高于第一阈值电压，则控制电路关闭开关，并且如果相间电压低于第二阈值电压，则控制电路打开开关。

19. 发明申请

US20100259208A1 ELECTRIC MACHINE AND CONTROL METHOD 有权
标题翻译：电机及控制方法
公开(公告)号：US20100259208A1
公开(公告)日：2010-10-14
申请号：US12421001
申请日：2009-04-09
申请人： Lei Hao , Chandra S. Namuduri
发明人： Lei Hao , Chandra S. Namuduri
IPC分类号： H02P6/08 , H02K21/02
CPC分类号： H02K21/028
摘要： A method for controlling an electric machine includes measuring a motor control parameter or parameters and selectively positioning an adjustable member within the electric machine in response the motor control parameters. Selective positioning of the adjustable member varies the geometry of a flux path within the electric machine, thereby inducing a predetermined voltage output in the electric machine. An electric machine includes a rotor, a shaft operatively connected to the rotor to rotate in conjunction therewith, and a stator. An adjustable member is positioned between the rotor and the stator, and has a variable offset position that can be selected by an electronic control unit (ECU) and applied by an actuator to thereby vary the geometry of a flux path within the electric machine. The adjustable member can include a non-magnetic annular hub and magnetic radial arms and axial extensions.
摘要翻译：一种用于控制电机的方法包括测量电机控制参数或参数，并响应于电动机控制参数选择性地将可调节构件定位在电机内。可调节构件的选择性定位改变电机内的通量路径的几何形状，从而在电机中引起预定的电压输出。电机包括转子，可操作地连接到转子以与其一起旋转的轴和定子。可调节构件定位在转子和定子之间，并且具有可由电子控制单元（ECU）选择并由致动器施加的可变偏移位置，从而改变电机内的磁通路径的几何形状。可调节构件可以包括非磁性环形轮毂和磁性径向臂和轴向延伸部。

20. 发明授权

US07686143B2 Magnetorheological device and system and method for using the same 有权
标题翻译：磁流变装置及其使用方法
公开(公告)号：US07686143B2
公开(公告)日：2010-03-30
申请号：US11974133
申请日：2007-10-11
申请人： Chandra S. Namuduri
发明人： Chandra S. Namuduri
IPC分类号： F16F9/53
CPC分类号： F16F9/535 , B60G17/0152 , B60G17/08 , B60G2200/142 , B60G2202/135 , B60G2202/312 , B60G2400/252 , B60G2400/821 , B60G2500/10 , B60G2800/162
摘要： A controllable magnetorheological (MR) damper having first, second and third portions is disclosed. The first and second portions have a translational degree of freedom therebetween, and the third portion has a rotational degree of freedom with respect to the first and second portions. The first and third portions are coupled via a translation-to-rotation converter, and the second and third portions are coupled via a magnetorheological (MR) fluid. A bearing is disposed between the first and second portions for supporting a side load therebetween, a magnetic field generator is in field communication with the magnetorheological fluid, and a signal path is in signal communication with the magnetic field generator. The third portion is rotationally responsive to translational motion between the first and second portions, the shear stress characteristic of the magnetorheological fluid is responsive to the magnetic field generator, and the magnetic field generator is controllably responsive to an excitation signal from the signal path.
摘要翻译：公开了一种具有第一，第二和第三部分的可控磁流变（MR）阻尼器。第一和第二部分之间具有平移自由度，并且第三部分具有相对于第一和第二部分的旋转自由度。第一和第三部分通过平移到旋转转换器耦合，并且第二和第三部分经由磁流变（MR）流体耦合。轴承设置在第一和第二部分之间用于支撑它们之间的侧向载荷，磁场发生器与磁流变流体现场连通，信号路径与磁场发生器信号通信。第三部分对第一和第二部分之间的平移运动进行旋转响应，磁流变流体的剪切应力特性响应于磁场发生器，并且磁场发生器可控地响应于来自信号路径的激励信号。

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