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1. 发明授权

US07225905B2 Magnetorheological fluid damper 有权
标题翻译：磁流变阻尼器
公开(公告)号：US07225905B2
公开(公告)日：2007-06-05
申请号：US10691091
申请日：2003-10-22
申请人： Chandra Sekhar Namuduri , Alan Lampe Browne , Nancy L. Johnson
发明人： Chandra Sekhar Namuduri , Alan Lampe Browne , Nancy L. Johnson
IPC分类号： F16F13/30
CPC分类号： F16F9/535
摘要： A magnetorheological damper device is provided having an increased shear interface area per unit volume of device, which enhances the stroking force of the damper. The damper generally includes a thrust shaft comprising an external threaded surface in threaded communication with a sealed housing, wherein at least one end of the thrust shaft extends from the housing; a plurality of rotors and stators alternatingly arranged in the housing, wherein the plurality of rotors comprise a planar surface with a centrally located aperture that is rotatably engaged with the threaded surface of the thrust shaft, wherein the plurality of stators is fixedly attached to the housing and comprises a centrally located aperture dimensioned to accommodate vertical movement of the thrust shaft and a planar surface substantially parallel to the planar surface of the at least one rotor, and wherein alternating stators comprises a permanent magnet or an electromagnet; and a magnetorheological fluid disposed in a space defined by the plurality of rotors and stators.
摘要翻译：提供了一种磁流变阻尼器装置，其具有每单位体积装置增加的剪切界面面积，这增强了阻尼器的抚摸力。阻尼器通常包括推力轴，其包括与密封壳体螺纹连通的外螺纹表面，其中推力轴的至少一端从壳体延伸; 多个转子和定子，其交替地布置在壳体中，其中多个转子包括具有中心定位的孔的平坦表面，其可旋转地与推力轴的螺纹表面接合，其中多个定子固定地附接到壳体并且包括中心定位的孔，其尺寸适于容纳推力轴的垂直运动和基本上平行于至少一个转子的平坦表面的平面，并且其中交替定子包括永磁体或电磁体; 以及设置在由所述多个转子和定子限定的空间中的磁流变流体。

2. 发明授权

US06909201B2 Dual voltage architecture for automotive electrical systems 有权
标题翻译：汽车电气系统的双电压架构
公开(公告)号：US06909201B2
公开(公告)日：2005-06-21
申请号：US10336960
申请日：2003-01-06
申请人： Balarama Vempaty Murty , Chandra Sekhar Namuduri
发明人： Balarama Vempaty Murty , Chandra Sekhar Namuduri
IPC分类号： H02J7/14 , B60L1/00
CPC分类号： H02J7/1423 , H02J2001/008 , Y02T10/7005 , Y10T307/625
摘要： A dual voltage automotive electrical system includes a generator for generating a first nominal voltage on a first voltage bus and a bi-directional DC/DC converter for converting the first nominal voltage to a second nominal voltage on a second voltage bus, the second nominal voltage being lower than said first nominal voltage. A battery is coupled to the first voltage bus and selectably coupled to the second voltage bus, and is capable of supplying power to loads on both the first voltage bus and the second voltage bus.
摘要翻译：双电压汽车电气系统包括用于在第一电压总线上产生第一标称电压的发电机和用于将第一标称电压转换为第二电压总线上的第二额定电压的双向DC / DC转换器，第二标称电压低于所述第一标称电压。电池耦合到第一电压总线并且可选地耦合到第二电压总线，并且能够向第一电压总线和第二电压总线两端的负载供电。

3. 发明授权

US06498451B1 Torque ripple free electric power steering 有权
标题翻译：扭矩波动免费电动助力转向
公开(公告)号：US06498451B1
公开(公告)日：2002-12-24
申请号：US09656116
申请日：2000-09-06
申请人： Nady Boules , Rassem Ragheb Henry , Chandra Sekhar Namuduri , Thomas Wolfgang Nehl , Bruno Patrice Bernard , Shaotang Chen
发明人： Nady Boules , Rassem Ragheb Henry , Chandra Sekhar Namuduri , Thomas Wolfgang Nehl , Bruno Patrice Bernard , Shaotang Chen
IPC分类号： G05B116
CPC分类号： B62D5/0403 , H02K7/116 , H02K29/03 , H02K29/08 , H02P6/10 , H02P2209/07
摘要： Disclosed is an electric motor system with reduced torque ripple comprising a sinusoidally magnetized permanent magnet, a sinusoidal inverter, a higher resolution position sensor, a composite iron stator yoke, a composite reinforced plastic rotor core and shaft; and a high gear ratio gear reduction box. The novel combination of magnet, inverter, sensor, plastic rotor core and shaft and high gear ratio gear box substantially reduces the torque ripple on the shaft of said motor system.
摘要翻译：公开了一种具有减小的转矩波动的电动机系统，包括正弦磁化永磁体，正弦逆变器，更高分辨率位置传感器，复合铁定子磁轭，复合增强塑料转子芯和轴; 和高齿轮减速箱。磁铁，变频器，传感器，塑料转子铁芯，轴和高速齿轮箱的新颖组合大大减少了所述电机系统的轴上的扭矩波动。

4. 发明授权

US06390252B1 Magnetorheological fluid damper with optimum damping 有权
标题翻译：磁流变阻尼器具有最佳的阻尼
公开(公告)号：US06390252B1
公开(公告)日：2002-05-21
申请号：US09397241
申请日：1999-09-16
申请人： Chandra Sekhar Namuduri , Alexander Apostolos Alexandridis
发明人： Chandra Sekhar Namuduri , Alexander Apostolos Alexandridis
IPC分类号： F16F953
CPC分类号： F16F9/535
摘要： An improved magnetorheological fluid damper is provided which more closely approximates ideal performance requirements including increased turn-up ratio and stiction free performance near zero velocity for realistic automotive applications. The MR damper includes a magnetic flux leakage reduction device positioned at each end of the magnetic damper piston assembly to create a magnetic flux isolation barrier causing magnetic flux to extend through an annular flow gap thereby minimizing flux leakage into other areas such as a piston rod and associated hollow tube. The magnetic flux leakage reduction devices are formed of a non-magnetic material and completely cover a respective adjacent axial face of a piston core. A laminar flow enhancing feature is also provided for enhancing laminar flow and minimizing turbulence in the annular flow gap thereby advantageously reducing the off-state force and increasing the turn-up ratio.
摘要翻译：提供了一种改进的磁流变流体阻尼器，其更接近于理想的性能要求，包括实现汽车应用的零速度附近的增加比率和无静态性能。 MR阻尼器包括位于磁阻尼活塞组件的每一端处的磁通量泄漏减少装置，以产生磁通隔离屏障，使得磁通量延伸通过环形流动间隙，从而最小化到其它区域（例如活塞杆）和相关的中空管。磁通泄漏减少装置由非磁性材料形成，并且完全覆盖活塞芯的各个相邻的轴向面。还提供了一种层流增强特征，用于增强层流并最小化环形流动间隙中的湍流，从而有利地降低了截止状态力并增加了翻转比。

5. 发明授权

US07051849B2 Magnetorheological fluid damper 有权
标题翻译：磁流变阻尼器
公开(公告)号：US07051849B2
公开(公告)日：2006-05-30
申请号：US10691365
申请日：2003-10-22
申请人： Alan Lampe Browne , Nancy L. Johnson , Chandra Sekhar Namuduri
发明人： Alan Lampe Browne , Nancy L. Johnson , Chandra Sekhar Namuduri
IPC分类号： F16F15/03
CPC分类号： F16F9/535
摘要： A magnetorheological damper device is provided having an increased shear interface area per unit volume of the device, which enhances the stroking force of the damper. The damper generally includes a cylindrically shaped housing; a magnetorheological fluid disposed in the cylindrically shaped housing; a piston assembly disposed within the cylindrically shaped housing in sliding engagement with the cylindrically shaped housing defining a first chamber and a second chamber, wherein the piston assembly comprises a plurality of cylindrically shaped fluid passageways extending from the first chamber to the second chamber, and an electromagnet; and a power supply in electrical communication with the electromagnet.
摘要翻译：提供了一种磁流变阻尼器装置，其具有每单位体积的装置的增加的剪切界面面积，这增强了阻尼器的抚平力。阻尼器通常包括圆柱形壳体; 设置在所述圆筒形壳体中的磁流变流体; 活塞组件，设置在所述圆柱形壳体内，与所述圆柱形壳体滑动接合，所述壳体限定第一腔室和第二腔室，其中所述活塞组件包括从所述第一腔室延伸到所述第二腔室的多个圆柱形流体通道，电磁铁以及与电磁体电连通的电源。

6. 发明授权

US06709035B1 Extendible bumper system and method of control 有权
标题翻译：可扩展保险杠系统和控制方法
公开(公告)号：US06709035B1
公开(公告)日：2004-03-23
申请号：US10324589
申请日：2002-12-19
申请人： Chandra Sekhar Namuduri , Lawrence E. Peruski , Gary Lee Jones
发明人： Chandra Sekhar Namuduri , Lawrence E. Peruski , Gary Lee Jones
IPC分类号： B60R1938
CPC分类号： B60R19/40
摘要： An extendible bumper system for a vehicle includes a controller system configured to: determine a distance of travel of a first end of a bumper structure using a signal from a position sensor in a first motor, determine a distance of travel of a second end of the bumper structure using a signal from a position sensor in a second motor, and independently adjust at least one of rotational speed and torque output of rotors in the first and second motors in response to the distances of travel. The rotational speed or torque output of the first and second rotors may be independently adjusted in response to a difference in the distances of travel of the first and second ends of the bumper structure, and the rotational speed or torque output of the first and second rotors may be accelerated or decelerated during predetermined distances of travel. A bumper energy absorber for supporting the bumper structure relative to a vehicle includes an inner tube, outer tube, lead screw, nut and motor. Rotation of the lead screw by the rotor causes translation of the nut along the lead screw for driving at least a portion of the bumper structure between extended and retracted positions.
摘要翻译：用于车辆的可延伸的保险杠系统包括：控制器系统，其被配置为：使用来自第一电动机中的位置传感器的信号来确定保险杠结构的第一端的行进距离，确定所述保险杠结构的第二端的行进距离使用来自第二电动机中的位置传感器的信号的保险杠结构，并且响应于行进距离独立地调节第一和第二电动机中的转子的转速和转矩输出中的至少一个。可以响应于保险杠结构的第一和第二端的行进距离的差异和第一和第二转子的转速或扭矩输出来独立地调节第一和第二转子的转速或扭矩输出可以在预定行驶距离内加速或减速。用于支撑保险杠结构相对于车辆的保险杠能量吸收器包括内管，外管，丝杠，螺母和马达。转子引导螺杆的旋转使得螺母沿导螺杆平移，用于在延伸位置和缩回位置之间驱动保险杠结构的至少一部分。

7. 发明授权

US06279701B1 Magnetorheological fluid damper with multiple annular flow gaps 有权
标题翻译：磁流变阻尼器具有多个环形流动间隙
公开(公告)号：US06279701B1
公开(公告)日：2001-08-28
申请号：US09394726
申请日：1999-09-13
申请人： Chandra Sekhar Namuduri , Alexander Apostolos Alexandridis , Joseph Madak , David S. Rule
发明人： Chandra Sekhar Namuduri , Alexander Apostolos Alexandridis , Joseph Madak , David S. Rule
IPC分类号： F16F953
CPC分类号： F16F9/535
摘要： An improved magnetorheological fluid damper is provided which closely approximates ideal performance requirements by providing an increased turn-up ratio and improving the linearity of damping force response. The MR damper includes a plurality of concentric annular flow gaps formed between concentrically mounted flux rings positioned on a piston core. By utilizing multiple flow gaps, the present damper increases the overall magnetorheological damping affect thereby creating a higher damping force and an increased tun-up ratio for a given piston size. Alternatively, the present multiple flow gap design permits a given damping force requirement to be achieved with a piston having a significantly reduced length thereby permitting a longer piston stroke. Also, multiple flow gaps permit greater design optimization for controlling damping force linearity.
摘要翻译：提供了一种改进的磁流变流体阻尼器，其通过提供增加的上升比和改善阻尼力响应的线性度来接近理想的性能要求。 MR阻尼器包括在定位在活塞芯上的同心安装的磁通环之间形成的多个同心环形流动间隙。通过利用多个流动间隙，本阻尼器增加了整个磁流变阻尼的影响，从而产生较高的阻尼力和给定的活塞尺寸的增加比。或者，本多重流动间隙设计允许通过具有显着减小的长度的活塞来实现给定的阻尼力要求，从而允许更长的活塞行程。此外，多个流动间隙允许更大的设计优化来控制阻尼力线性。

8. 发明授权

US07354056B2 Trailer stability control apparatus 有权
标题翻译：拖车稳定性控制装置
公开(公告)号：US07354056B2
公开(公告)日：2008-04-08
申请号：US10444502
申请日：2003-05-23
申请人： Chandra Sekhar Namuduri , David S. Rule
发明人： Chandra Sekhar Namuduri , David S. Rule
IPC分类号： B60D1/32
CPC分类号： B60D1/322
摘要： A trailer stability control apparatus for a vehicle and a trailer includes a trailer hitch assembly interconnecting a rear end of the vehicle and a front end of the trailer. The trailer stability control apparatus also includes at least one controllable damper connected to the trailer hitch assembly. The trailer stability control apparatus further includes a controller electrically connected to the at least one controllable damper for providing continuously controllable damping forces between the vehicle and the trailer.
摘要翻译：用于车辆和拖车的拖车稳定性控制装置包括将车辆的后端和拖车的前端互连的拖车牵引组件。拖车稳定性控制装置还包括连接到拖车牵引装置的至少一个可控制的阻尼器。拖车稳定性控制装置还包括电连接到所述至少一个可控阻尼器的控制器，用于在车辆和拖车之间提供连续可控的阻尼力。

9. 发明授权

US06983832B2 Impact energy absorber and process 有权
标题翻译：冲击能量吸收器和过程
公开(公告)号：US06983832B2
公开(公告)日：2006-01-10
申请号：US10691372
申请日：2003-10-22
申请人： Chandra Sekhar Namuduri , Alan Lampe Browne , John C. Ulicny
发明人： Chandra Sekhar Namuduri , Alan Lampe Browne , John C. Ulicny
IPC分类号： F16F9/53 , F16F7/12
CPC分类号： F16F9/36 , F16F9/535
摘要： A tunable and reusable impact energy absorbing system and process includes a control structure comprising a sleeve having an outer surface fixedly attached to a chassis, a seal at each end of the sleeve, a magnetorheological fluid disposed between the seals, and a coil in proximity to the magnetorheological fluid, wherein the seal and the magnetorheological fluid are in sliding engagement with a support member, wherein the impact surface is fixedly attached to a support member. Varying the current to the coil alters the magnetic field upon the magnetorheological fluid, which can be used to tune the yield stress of the sliding engagement.
摘要翻译：可调和可重复使用的冲击能量吸收系统和方法包括控制结构，该控制结构包括具有固定地连接到底盘的外表面的套筒，套筒每端的密封件，设置在密封件之间的磁流变流体，所述磁流变流体，其中所述密封件和所述磁流变流体与支撑构件滑动接合，其中所述冲击表面固定地附接到支撑构件。改变线圈的电流可以改变磁流变流体上的磁场，磁流变流体可用于调节滑动接合的屈服应力。

10. 发明授权

US06920753B2 Magneto-electrohydraulic power steering system 有权
标题翻译：磁电液动力转向系统
公开(公告)号：US06920753B2
公开(公告)日：2005-07-26
申请号：US10408752
申请日：2003-04-07
申请人： Chandra Sekhar Namuduri
发明人： Chandra Sekhar Namuduri
IPC分类号： B62D5/06 , B62D5/065 , F16D37/02
CPC分类号： B62D5/065 , B62D5/063 , F16D37/02 , F16D2037/005
摘要： A magneto-electrohydraulic power steering system for a vehicle includes a magneto-electrohydraulic power steering pump interconnecting a power steering gear of the vehicle and a drive shaft of an engine of the vehicle. The magneto-electrohydraulic power steering system also includes a controller operatively connected to the magneto-electrohydraulic power steering pump to generate a current signal to vary a speed of the magneto-electrohydraulic power steering pump.
摘要翻译：一种用于车辆的电磁液压动力转向系统包括将车辆的动力转向器和车辆的发动机的驱动轴相互连接的磁电液力动力转向泵。磁电动液压动力转向系统还包括可操作地连接到磁电液力动力转向泵的控制器，以产生电流信号以改变磁电液压动力转向泵的速度。

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