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1. 发明申请

US20080024028A1 Permanent magnet electric motor 审中-公开
标题翻译：永磁电动机
公开(公告)号：US20080024028A1
公开(公告)日：2008-01-31
申请号：US11494088
申请日：2006-07-27
申请人： Mohammad S. Islam , Paul M. Fisher , Tomy Sebastian , Ramakrishnan Raja Venkitasubramony , Tom C. Wong
发明人： Mohammad S. Islam , Paul M. Fisher , Tomy Sebastian , Ramakrishnan Raja Venkitasubramony , Tom C. Wong
IPC分类号： H02K21/12 , H02K23/42 , H02K1/00
CPC分类号： H02K29/03 , H02K5/22 , H02K11/215 , H02K29/08
摘要： An electric motor for reducing torque ripple includes a rotor, a plurality of magnets positioned about the rotor, and a stator including a plurality of stator teeth configured to form at least two slot openings each having a slot opening width wo and a slot opening height ho. One or more of the stator teeth include a dummy channel having a channel height wn and a channel width wb. At least one of the slot opening width wo, the slot opening height ho, the channel height wn, and the channel width wb, are selected so as to minimize or reduce cogging torque.
摘要翻译：用于减小转矩波动的电动机包括转子，围绕转子定位的多个磁体，以及定子，其包括多个定子齿，所述定子配置成形成至少两个开槽宽度， SUB>和槽开口高度h 。一个或多个定子齿包括具有通道高度w N n N和通道宽度w B b的虚拟通道。狭槽开口宽度w 0，沟槽高度h N o，沟槽高度w N n N以及通道宽度w 选择以便最小化或减少齿槽转矩。

2. 发明授权

US07659679B2 System and method for adjusting a dead-time interval in a motor control circuit 有权
标题翻译：用于调整电机控制电路中的死区间隔的系统和方法
公开(公告)号：US07659679B2
公开(公告)日：2010-02-09
申请号：US11622784
申请日：2007-01-12
申请人： Ramakrishnan Raja , Mohammad S. Islam , Paul M. Fisher , Tomy Sebastian , Lucas W. Wendling
发明人： Ramakrishnan Raja , Mohammad S. Islam , Paul M. Fisher , Tomy Sebastian , Lucas W. Wendling
IPC分类号： H02P31/00
CPC分类号： B62D5/0463 , B62D5/046
摘要： A system and a method for adjusting a dead-time interval between de-activating a first transistor and activating a second transistor in a motor control circuit are provided. The method includes determining a plurality of commanded torque values associated with a motor based on a received signal over time. The method further includes setting the dead-time interval value equal to a first value when one commanded torque value of the plurality of commanded torque values is within a first torque range. The method further includes decreasing the dead-time interval value as other commanded torque values of the plurality of commanded torque values increase over time within a second torque range. The second torque range is greater than the first torque range. The dead-time interval value is indicative of a desired dead-time interval.
摘要翻译：提供了一种用于调节在电动机控制电路中去激活第一晶体管和激活第二晶体管之间的死区间隔的系统和方法。该方法包括基于随时间的接收信号确定与电动机相关联的多个命令转矩值。该方法还包括当多个指令转矩值的一个指令转矩值处于第一转矩范围内时，将死区间隔值设定为等于第一值。该方法还包括随着多个命令转矩值中的其他命令转矩值在第二扭矩范围内随时间增加而减小死区时间间隔值。第二扭矩范围大于第一扭矩范围。死区间隔值表示期望的死区间隔。

3. 发明申请

US20080169777A1 SYSTEM AND METHOD FOR ADJUSTING A DEAD-TIME INTERVAL IN A MOTOR CONTROL CIRCUIT 有权
标题翻译：用于调整电机控制电路中的死时间间隔的系统和方法
公开(公告)号：US20080169777A1
公开(公告)日：2008-07-17
申请号：US11622784
申请日：2007-01-12
申请人： Ramakrishnan Raja , Mohammad S. Islam , Paul M. Fisher , Tomy Sebastian , Lucas W. Wendling
发明人： Ramakrishnan Raja , Mohammad S. Islam , Paul M. Fisher , Tomy Sebastian , Lucas W. Wendling
IPC分类号： H02P7/00
CPC分类号： B62D5/0463 , B62D5/046
摘要： A system and a method for adjusting a dead-time interval between de-activating a first transistor and activating a second transistor in a motor control circuit are provided. The method includes determining a plurality of commanded torque values associated with a motor based on a received signal over time. The method further includes setting the dead-time interval value equal to a first value when one commanded torque value of the plurality of commanded torque values is within a first torque range. The method further includes decreasing the dead-time interval value as other commanded torque values of the plurality of commanded torque values increase over time within a second torque range. The second torque range is greater than the first torque range. The dead-time interval value is indicative of a desired dead-time interval.
摘要翻译：提供了一种用于调节在电动机控制电路中去激活第一晶体管和激活第二晶体管之间的死区间隔的系统和方法。该方法包括基于随时间的接收信号确定与电动机相关联的多个命令转矩值。该方法还包括当多个指令转矩值的一个指令转矩值处于第一转矩范围内时，将死区间隔值设定为等于第一值。该方法还包括随着多个命令转矩值中的其他命令转矩值在第二扭矩范围内随时间增加而减小死区时间间隔值。第二扭矩范围大于第一扭矩范围。死区间隔值表示期望的死区间隔。

4. 发明申请

US20140265961A1 MOTOR CONTROL SYSTEM TO COMPENSATE FOR TORQUE RIPPLE 有权
标题翻译：补偿扭矩纹理的电机控制系统
公开(公告)号：US20140265961A1
公开(公告)日：2014-09-18
申请号：US13795578
申请日：2013-03-12
申请人： Abraham Gebregergis , Mohammad S. Islam , Tomy Sebastian , Mazharul H. Chowdhury , Shakil Hossain , Ramakrishnan RajaVenkitasubramony , Niharika P. Popy
发明人： Abraham Gebregergis , Mohammad S. Islam , Tomy Sebastian , Mazharul H. Chowdhury , Shakil Hossain , Ramakrishnan RajaVenkitasubramony , Niharika P. Popy
IPC分类号： H02P6/10
CPC分类号： H02P6/10 , B62D5/046 , H02P21/05 , H02P21/22 , H02P29/50
摘要： A motor control system is provided. The motor control system includes a motor having plurality of motor harmonics, and a torque ripple compensation controller in communication with the motor. The torque ripple compensation controller is configured to determine a harmonic ripple current for a corresponding one of the plurality of motor harmonics. The harmonic ripple current is based on a reference q-axis current and a reference d-axis current. The torque ripple compensation controller is configured to add the harmonic ripple current for each of the plurality of motor harmonics together to determine the ripple compensating current.
摘要翻译：提供电机控制系统。电动机控制系统包括具有多个电动机谐波的电动机和与电动机连通的转矩脉动补偿控制器。转矩脉动补偿控制器被配置为确定多个电动机谐波中的相应一个的谐波纹波电流。谐波纹波电流基于参考q轴电流和参考d轴电流。扭矩纹波补偿控制器被配置为将多个电机谐波中的每一个的谐波纹波电流加在一起以确定纹波补偿电流。

5. 发明授权

US06801012B1 Sensorless control of switched reluctance electric machines 有权
标题翻译：开关磁阻电机的无传感器控制
公开(公告)号：US06801012B1
公开(公告)日：2004-10-05
申请号：US10404421
申请日：2003-03-31
申请人： Mohammad S. Islam , Sayeed A. Mir , Tomy Sebastian , Iqbal Husain
发明人： Mohammad S. Islam , Sayeed A. Mir , Tomy Sebastian , Iqbal Husain
IPC分类号： H02P146
CPC分类号： H02P25/089
摘要： A system and methodology for control of a switched reluctance electric machine comprising: a switched reluctance electric machine including a sensor generating and transmitting a sensor signal indicative of an operating characteristic; a controller operatively coupled to the switched reluctance motor and the sensor; and the controller executing a method. The method comprises: probing a selected diagnostic phase with a pulse injection process; measuring an actual operating characteristic of the switched reluctance electric machine; computing an inductance based on the actual operating characteristic and correlating the inductance with a position to formulate an estimated position; modeling the switched reluctance electric machine to formulate an observer-based estimated position; selecting at one of the estimated position, the observer-based estimated position, and a combination thereof to formulate a selected position of the switched reluctance machine; and controlling said switched reluctance machine based on said selected position and a command.
摘要翻译：一种用于控制开关磁阻电机的系统和方法，包括：开关磁阻电机，包括产生和发送指示操作特性的传感器信号的传感器; 操作地耦合到所述开关磁阻电动机和所述传感器的控制器; 并且控制器执行方法。该方法包括：用脉冲注射过程探测所选择的诊断相位; 测量开关磁阻电机的实际工作特性; 基于实际工作特性计算电感，并将电感与位置相关联以制定估计位置; 对开关磁阻电机进行建模，以制定基于观察者的估计位置; 选择估计位置之一，基于观察者的估计位置及其组合，以制定开关磁阻电机的选定位置; 以及基于所述选择的位置和命令来控制所述开关磁阻电机。

6. 发明授权

US09136785B2 Motor control system to compensate for torque ripple 有权
标题翻译：电机控制系统补偿扭矩波动
公开(公告)号：US09136785B2
公开(公告)日：2015-09-15
申请号：US13795578
申请日：2013-03-12
申请人： Abraham Gebregergis , Mohammad S. Islam , Tomy Sebastian , Mazharul H. Chowdhury , Shakil Hossain , Ramakrishnan RajaVenkitasubramony , Niharika P. Popy
发明人： Abraham Gebregergis , Mohammad S. Islam , Tomy Sebastian , Mazharul H. Chowdhury , Shakil Hossain , Ramakrishnan RajaVenkitasubramony , Niharika P. Popy
IPC分类号： H02K29/06 , H02P6/10 , H02P21/00 , H02P21/05 , B62D5/04
CPC分类号： H02P6/10 , B62D5/046 , H02P21/05 , H02P21/22 , H02P29/50
摘要： A motor control system is provided. The motor control system includes a motor having plurality of motor harmonics, and a torque ripple compensation controller in communication with the motor. The torque ripple compensation controller is configured to determine a harmonic ripple current for a corresponding one of the plurality of motor harmonics. The harmonic ripple current is based on a reference q-axis current and a reference d-axis current. The torque ripple compensation controller is configured to add the harmonic ripple current for each of the plurality of motor harmonics together to determine the ripple compensating current.
摘要翻译：提供电机控制系统。电动机控制系统包括具有多个电动机谐波的电动机和与电动机连通的转矩脉动补偿控制器。转矩脉动补偿控制器被配置为确定多个电动机谐波中的相应一个的谐波纹波电流。谐波纹波电流基于参考q轴电流和参考d轴电流。扭矩纹波补偿控制器被配置为将多个电机谐波中的每一个的谐波纹波电流加在一起以确定纹波补偿电流。

7. 发明授权

US08013696B2 Magnetic apparatus and method of manufacturing the magnetic apparatus 失效
标题翻译：磁性装置及其制造方法
公开(公告)号：US08013696B2
公开(公告)日：2011-09-06
申请号：US12251143
申请日：2008-10-14
申请人： Raghunath P. Khetan , Mohammad S. Islam , Matt Mielke , Brian J. Magnus , Tomy Sebastian , Charmaine Wittig , William D. Glumm , Joe Koscielecki
发明人： Raghunath P. Khetan , Mohammad S. Islam , Matt Mielke , Brian J. Magnus , Tomy Sebastian , Charmaine Wittig , William D. Glumm , Joe Koscielecki
IPC分类号： H01F1/00
CPC分类号： B62D5/0835 , Y10T29/49405
摘要： The present invention provides for a magnetic apparatus and a method of manufacturing the magnetic apparatus including a magnet having an outer surface and an inner surface opposing each other with the inner surface having a first portion and a second portion integrally connected to and facing each other and utilizing a fluid and a fixture body defining a hole along a fixture axis and a deflector disposed within the hole. The method includes the steps of installing the magnet on the fixture body and securing the magnet to the fixture body. The method further includes the steps of flowing the fluid through the magnet transverse to the fixture axis to form at least one aperture and intersecting the fluid with the deflector to redirect the fluid generally along the fixture axis.
摘要翻译：本发明提供一种磁性装置和磁性装置的制造方法，该磁性装置包括具有彼此相对的外表面和内表面的磁体，内表面具有一体地连接并相互面对的第一部分和第二部分，利用沿着固定轴线限定孔的流体和固定体，以及设置在孔内的偏转器。该方法包括以下步骤：将磁体安装在固定装置主体上并将磁体固定到固定装置本体上。该方法还包括以下步骤：使流体流过磁体横向于固定装置轴线，以形成至少一个孔，并将流体与偏转器相交，以使流体大体上沿固定轴线重定向。

8. 发明授权

US06851325B2 DSP based algorithm for non-contacting torque sensor 失效
标题翻译：基于DSP的非接触力矩传感器算法
公开(公告)号：US06851325B2
公开(公告)日：2005-02-08
申请号：US10320328
申请日：2002-12-16
申请人： Sayeed A. Mir , Mohammad S. Islam , Tomy Sebastian
发明人： Sayeed A. Mir , Mohammad S. Islam , Tomy Sebastian
IPC分类号： G01L3/10 , G01L3/02
CPC分类号： B62D6/10 , G01L3/104 , G01L3/105 , G01L3/109
摘要： A method of detecting a sensed parameter for a motor control system comprising: receiving a sensor signal, the sensor signal exhibiting a frequency responsive to an inductance of a non-contacting variable reluctance rotational displacement sensor, wherein the inductance is indicative of a displacement of the sensor and responsive to the sensed parameter; capturing a first transition of the sensor signal and a time associated therewith; capturing a second transition of the sensor signal and a time associated therewith; calculating a period for the sensor signal; and computing a value for the sensed parameter, the value responsive to the period.
摘要翻译：一种检测用于电机控制系统的感测参数的方法，包括：接收传感器信号，所述传感器信号呈现响应于非接触可变磁阻旋转位移传感器的电感的频率，其中所述电感表示所述传感器信号的位移传感器并响应于感测参数; 捕获传感器信号的第一次转换和与之相关联的时间; 捕获传感器信号的第二过渡和与之相关联的时间; 计算传感器信号的周期; 并计算感测参数的值，该值响应于该周期。

9. 发明授权

US06851324B2 Non-contacting compliant torque sensor 失效
标题翻译：非接触式转矩传感器
公开(公告)号：US06851324B2
公开(公告)日：2005-02-08
申请号：US10319952
申请日：2002-12-16
申请人： Mohammad S. Islam , Sayeed A. Mir , Tomy Sebastian , Christian E. Ross
发明人： Mohammad S. Islam , Sayeed A. Mir , Tomy Sebastian , Christian E. Ross
IPC分类号： G01L3/10 , G01L3/02
CPC分类号： G01L3/105 , G01L3/104 , G01L3/109
摘要： A variable reluctance rotational displacement sensor with: an annular sleeve; a coil coaxially aligned within the sleeve; a first ring in magnetic communication with the sleeve, coaxially aligned and configured to rotate relative to the sleeve. The first ring including a first plurality of axially directed teeth arranged about a circumference of the ring on a front portion thereof. The sensor also includes a second ring in magnetic communication with the first ring and the sleeve, the second ring coaxially aligned and configured to rotate relative to the first ring and the sleeve and including a second plurality of axially directed teeth configured substantially the same as the first plurality of axially directed teeth and oriented adjacent to the first plurality of axially directed teeth on a rear portion of the second ring. The coil generates a signal responsive to a differential displacement between the first and second rings.
摘要翻译：可变磁阻旋转位移传感器，其具有：环形套筒; 在套筒内同轴对齐的线圈; 与所述套筒磁连通的第一环，其同轴对准并构造成相对于所述套筒旋转。第一环包括在其前部上围绕环的圆周布置的第一多个轴向定向的齿。传感器还包括与第一环和套筒磁连通的第二环，第二环同轴对准并构造成相对于第一环和套筒旋转，并且包括第二多个轴向定向的齿，其基本上与第一多个轴向定向的齿并且在第二环的后部上邻近第一多个轴向定向的齿定向。线圈产生响应于第一和第二环之间的差异位移的信号。

10. 发明授权

US07898139B2 Variable effort steering actuator 有权
标题翻译：可变力转向执行器
公开(公告)号：US07898139B2
公开(公告)日：2011-03-01
申请号：US12187722
申请日：2008-08-07
申请人： Mohammad S. Islam , Joel E. Birsching , Tomy Sebastian
发明人： Mohammad S. Islam , Joel E. Birsching , Tomy Sebastian
IPC分类号： H02K1/06 , H02K49/00 , H02K49/02
CPC分类号： B62D5/0835
摘要： A magnetic actuator, comprising, an inner ring, an outer ring disposed around the inner ring, a first pair of inner teeth disposed on the inner ring that partially define a gap between the first pair of inner teeth having a first angular dimension, a second pair of inner teeth disposed on the inner ring that partially define a gap between the second pair of inner teeth having a second angular dimension, a first pair of outer teeth disposed on the outer ring that partially define a gap between the first pair of outer teeth having a third angular dimension and a second pair of outer teeth disposed on the outer ring that partially define a gap between the second pair of outer teeth having a fourth angular dimension.
摘要翻译：一种磁性致动器，包括内圈，围绕所述内圈设置的外圈，设置在内圈上的第一对内齿，其部分地限定第一对内齿之间的间隙，具有第一角度尺寸，第二对内齿设置在所述内环上的一对内齿，其部分地限定具有第二角度尺寸的所述第二对内齿之间的间隙，设置在所述外环上的第一对外齿，其部分地限定所述第一对外齿之间的间隙具有设置在外环上的第三角度尺寸和第二对外齿，其部分地限定第二对外齿之间的间隙，具有第四角度尺寸。

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