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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 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。

7. 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.

8. 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.

9. 发明授权

US08314578B2 Control of an alternator-starter for a hybrid electric vehicle having a disconnected high-voltage battery 有权
标题翻译：控制具有断开的高压电池的混合电动车辆的交流发电机起动器
公开(公告)号：US08314578B2
公开(公告)日：2012-11-20
申请号：US12710424
申请日：2010-02-23
申请人： Chandra S. Namuduri , Bryan M. Ludwig , Keith D. Van Maanen , Suresh Gopalakrishnan
发明人： Chandra S. Namuduri , Bryan M. Ludwig , Keith D. Van Maanen , Suresh Gopalakrishnan
IPC分类号： H02P27/06
CPC分类号： B60K6/485 , B60L3/0046 , B60L3/0069 , B60L3/0092 , B60L3/04 , B60L11/14 , B60L11/1868 , B60L2210/40 , B60L2270/20 , H02P27/06 , H02P2201/07 , Y02T10/6226 , Y02T10/642 , Y02T10/70 , Y02T10/7005 , Y02T10/7066 , Y02T10/7077 , Y02T10/7241
摘要： A hybrid powertrain system includes an electric motor/generator unit having a multiphase asynchronous AC machine electrically connected to a multiphase bridge inverter. A high-voltage capacitor is electrically connected between positive and negative sides of a high-voltage DC power bus. High-voltage DC bus pre-charge circuits are electrically connected between gate drive bias power supplies and the multiphase bridge inverter. A low-voltage battery electrically charges the high-voltage DC link capacitor via the gate drive bias power supplies and the high-voltage DC bus pre-charge circuits when the high-voltage energy storage system is disconnected from the high-voltage DC power bus.
摘要翻译：混合动力系统包括具有电连接到多相桥逆变器的多相异步交流电机的电动机/发电机单元。高压电容器电连接在高压直流电源总线的正极和负极之间。高压直流母线预充电电路电连接在栅极驱动偏置电源和多相桥式逆变器之间。当高压能量存储系统与高压直流电源总线断开时，低压电池通过栅极驱动偏置电源和高压直流母线预充电电路对高压直流链路电容器进行充电。

10. 发明授权

US08055408B2 High bandwidth control of magnetic ride control system 有权
标题翻译：磁力控制系统的高带宽控制
公开(公告)号：US08055408B2
公开(公告)日：2011-11-08
申请号：US12047093
申请日：2008-03-12
申请人： Suresh Gopalakrishnan , Chandra S. Namuduri
发明人： Suresh Gopalakrishnan , Chandra S. Namuduri
IPC分类号： B60G17/00 , B60G17/048 , F16F15/03 , F16F9/53
CPC分类号： B60G17/06 , B60G2202/154 , F16F9/535
摘要： A semi-active suspension system that employs magnetically controlled dampers. The semi-active suspension system includes a plurality of sensors that measure vehicle parameters in response to disturbances on the vehicle and provide sensor signals to a central controller. The central controller converts the sensor signals to a flux command signal that is representative of the force on the dampers at each wheel of the vehicle. The flux command signal is sent to a local controller that generates a coil voltage that is applied to a coil within the damper. A flux feedback signal generated by the coil is estimated or measured and is compared to the flux command signal in the local controller to adjust the coil voltage to minimize the difference between the flux command signal and the flux feedback signal to provide a response to the force without a flux delay.
摘要翻译：采用磁力控制阻尼器的半主动悬架系统。半主动悬架系统包括多个传感器，其响应于车辆上的干扰而测量车辆参数，并向中央控制器提供传感器信号。中央控制器将传感器信号转换成代表车辆每个车轮上的阻尼器上的力的通量指令信号。通量指令信号被发送到本地控制器，其产生施加到阻尼器内的线圈的线圈电压。由线圈产生的磁通反馈信号被估计或测量，并且与局部控制器中的通量指令信号进行比较，以调整线圈电压，以使通量指令信号和通量反馈信号之间的差异最小化，以提供对力的响应没有磁通延迟。

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