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1.发明授权公开(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
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。
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2.发明申请公开(公告)号：US20090269043A1
公开(公告)日：2009-10-29
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： H02P7/29
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。
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3.发明授权Method for managing faults in a magneto-rheological hydraulic power steering system 有权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
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。
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4.发明申请PUMP SPEED COMMAND GENERATION ALGORITHM FOR MAGNETORHEOLOGICAL POWER STEERING COUPLING 有权用于磁电动力转向联轴器的泵速度指令生成算法公开(公告)号：US20100250069A1
公开(公告)日：2010-09-30
申请号：US12412705
申请日：2009-03-27
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： B62D5/04
摘要： A method for determining a speed of a power steering pump used in a power steering assembly of a vehicle that has particular application in a vehicle using a magneto-rheological hydraulic power steering (MRHPS) system for improving the fuel efficiency and ride comfort of the vehicle, and for reliable functioning of the power steering system. The method includes determining an angle of rotation of the steering wheel and a rate of change of the angle of rotation of the steering wheel based on the angle of rotation of the steering wheel of the vehicle. The method further includes determining the speed of the vehicle and the speed of the power steering pump based on the angle of rotation of the steering wheel, the rate of change of the angle of rotation of the steering wheel and the speed of the vehicle.
摘要翻译： 一种用于确定在车辆的动力转向组件中使用的动力转向泵的速度的方法，其特别应用于使用磁流变液压动力转向（MRHPS）系统的车辆中，以改善车辆的燃料效率和乘坐舒适性 ，并且用于动力转向系统的可靠功能。 该方法包括基于车辆的方向盘的旋转角度确定方向盘的旋转角度和方向盘的旋转角度的变化率。 该方法还包括基于方向盘的旋转角度，方向盘的旋转角度和车辆速度的变化率来确定车辆的速度和动力转向泵的速度。
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5.发明申请METHOD FOR MANAGING FAULTS IN A MAGNETO-RHEOLOGICAL HYDRAULIC POWER STEERING SYSTEM 有权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：US20120130594A1
公开(公告)日：2012-05-24
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
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。
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6.发明授权Pump speed command generation algorithm for magnetorheological power steering coupling 有权用于磁流变动力转向联轴器的泵速指令生成算法公开(公告)号：US08150579B2
公开(公告)日：2012-04-03
申请号：US12412705
申请日：2009-03-27
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： B62D5/06
摘要： A method for determining a speed of a power steering pump used in a power steering assembly of a vehicle that has particular application in a vehicle using a magneto-rheological hydraulic power steering (MRHPS) system for improving the fuel efficiency and ride comfort of the vehicle, and for reliable functioning of the power steering system. The method includes determining an angle of rotation of the steering wheel and a rate of change of the angle of rotation of the steering wheel based on the angle of rotation of the steering wheel of the vehicle. The method further includes determining the speed of the vehicle and the speed of the power steering pump based on the angle of rotation of the steering wheel, the rate of change of the angle of rotation of the steering wheel and the speed of the vehicle.
摘要翻译： 一种用于确定在车辆的动力转向组件中使用的动力转向泵的速度的方法，其特别应用于使用磁流变液压动力转向（MRHPS）系统的车辆中，以改善车辆的燃料效率和乘坐舒适性 ，并且用于动力转向系统的可靠功能。 该方法包括基于车辆的方向盘的旋转角度确定方向盘的旋转角度和方向盘的旋转角度的变化率。 该方法还包括基于方向盘的旋转角度，方向盘的旋转角度和车辆速度的变化率来确定车辆的速度和动力转向泵的速度。
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公开(公告)号：US07334670B2
公开(公告)日：2008-02-26
申请号：US11112445
申请日：2005-04-22
申请人： Chandra S. Namuduri , Balarama V. Murty , Anthony L. Smith , Jie Tong , Mark A. Golden , John C. Ulicny
发明人： Chandra S. Namuduri , Balarama V. Murty , Anthony L. Smith , Jie Tong , Mark A. Golden , John C. Ulicny
IPC分类号： F16D27/00
CPC分类号： F16H48/30 , B60K17/3462 , B60K23/0808 , F16D37/02 , F16D2037/004 , F16H3/721 , F16H48/10 , F16H48/26 , F16H48/34 , F16H2048/106 , F16H2048/204 , F16H2048/346
摘要： A magnetorheological (MR) fluid coupling for vectoring torque with respect to a shaft capable of rotary motion is disclosed. The coupling includes a stator, a rotor having a rotational degree of freedom with respect to the stator and configured for physical communication with the shaft, and a magnetic field generator. The stator and rotor define an annular space therebetween and are coupled via a MR fluid disposed within the annular space. The magnetic field generator is in field communication with the MR fluid and is disposed to produce a substantially radially directed magnetic field across the annular space. The rotor is rotationally responsive to the application of a magnetic field at the MR fluid.
摘要翻译： 公开了一种用于相对于能够旋转运动的轴的矢量转矩的磁流变（MR）流体联轴器。 联轴器包括定子，具有相对于定子的旋转自由度并被配置为与轴物理连通的转子和磁场发生器。 定子和转子在它们之间限定一个环形空间，并通过布置在环形空间内的MR流体耦合。 磁场发生器与MR流体现场连通并被设置成跨越环形空间产生基本上径向定向的磁场。 转子响应于在MR流体处施加磁场而旋转。
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8.发明授权Single current regulator for controlled motoring and braking of a DC-fed electric motor 失效用于直流馈电电动机控制电动和制动的单电流调节器
公开(公告)号：US5291106A
公开(公告)日：1994-03-01
申请号：US980052
申请日：1992-11-23
摘要： A control system for an electric machine powered from a DC source, wherein controlled motoring and controlled braking are achieved with a single current regulator control, even when the DC source cannot accept charging current and/or the induced motor voltage exceeds the DC bus voltage. The motor control circuit comprises a DC source connected to a DC bus, a current control circuit for modulating switching devices connected across the DC bus, an energy exchange capacitor connected across the DC bus, a load resistor, a switching circuit effective when activated to interrupt a connection between the DC source and the DC bus and to connect the load resistor across the DC bus in parallel with the capacitor, and a logic circuit for activating the switching circuit during motor braking under conditions for which the modulation of the switching devices is ineffective to control the braking current.
摘要翻译： 用于由DC源供电的电机的控制系统，其中通过单个电流调节器控制实现受控的电动和受控制动，即使当DC源不能接受充电电流和/或感应的电动机电压超过DC总线电压时。 电动机控制电路包括连接到DC总线的直流电源，用于调制跨直流总线连接的开关装置的电流控制电路，跨DC总线连接的能量交换电容器，负载电阻器，当被激活以中断时有效的开关电路 直流电源和直流母线之间的连接，并将负载电阻与电容器并联连接在直流母线上;以及逻辑电路，用于在电动机制动期间激活开关电路，使开关器件的调制无效 以控制制动电流。
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9.发明授权Method and apparatus for controlling a magneto-rheological power steering coupling 有权用于控制磁流变动力转向联轴器的方法和装置公开(公告)号：US07571040B2
公开(公告)日：2009-08-04
申请号：US11352578
申请日：2006-02-10
CPC分类号： B62D5/063 , B62D5/0478 , B62D5/065
摘要： A method of controlling a magneto-rheological power steering coupling is provided. The method is to be employed by a controller and is initiated upon engine start-up. The method includes initializing calibration parameters and reading a plurality of input values. Subsequently, a hand wheel angle rate value is calculated from one of said plurality of input values. A pump speed command value is calculated as a function of at least the hand wheel angle rate value. A pump speed error value is then calculated, and a proportional-integral-derivative calculation is performed acting on the pump speed error value to determine a pulse width modulation duty cycle value. The duty cycle value is then output to a power driver to provide a control signal to the magneto-rheological power steering coupling. Also provided is control system and apparatus operable to perform the functions described hereinabove.
摘要翻译： 提供了一种控制磁流变动力转向联轴器的方法。 该方法由控制器使用，并且在发动机起动时启动。 该方法包括初始化校准参数并读取多个输入值。 随后，从所述多个输入值之一计算手轮角度速率值。 泵速指令值被计算为至少手轮角速率值的函数。 然后计算泵速度误差值，并根据泵速度误差值进行比例积分微分计算，以确定脉冲宽度调制占空比值。 然后将占空比值输出到功率驱动器，以向磁流变动力转向联轴器提供控制信号。 还提供了可操作以执行上述功能的控制系统和装置。
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公开(公告)号：US20100244610A1
公开(公告)日：2010-09-30
申请号：US12409672
申请日：2009-03-24
申请人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
发明人： Lei Hao , Chandra S. Namuduri , Balarama V. Murty
CPC分类号： H02K21/12 , H02K1/27 , H02K1/278 , H02K1/30 , H02K7/08 , H02K7/083 , H02K7/088 , H02K21/16 , H02K29/03
摘要： A single stator electric machine includes a plurality of magnets for generating a first magnetic field. Each respective magnet represents a respective rotor pole. A magnet holder retains the plurality of magnets. A stator is disposed radially outward from the plurality of magnets for generating a second magnetic field. The stator includes a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. Each respective concentrated winding within the stator comprises non-overlapping phases which increase an active length of the windings of the stator and reduce an overhang of each respective winding with respect to each stator pole for improving torque efficiency. A number of rotor poles is at least eight and the number of rotor poles and a number of stator slots have a least common multiple of at least 36.
摘要翻译： 单个定子电机包括用于产生第一磁场的多个磁体。 各个磁体表示相应的转子极。 磁体保持器保持多个磁体。 定子从多个磁体径向向外设置，用于产生第二磁场。 定子包括由槽分开的多个定子极，每个定子极具有集中的绕组，每个相应的定子极周围形成相应的匝数。 定子内的每个各自的集中绕组包括非重叠相，其增加定子的绕组的有效长度并且相对于每个定子极减小每个相应绕组的悬伸以提高转矩效率。 多个转子极点至少为8个，转子极数和多个定子槽具有至少36的最小公倍数。
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