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1. 发明授权

US09106175B2 Diagnostic system and method for an electric power steering system 有权
标题翻译：电动助力转向系统的诊断系统和方法
公开(公告)号：US09106175B2
公开(公告)日：2015-08-11
申请号：US13192867
申请日：2011-07-28
申请人： Paul Fisher , Christian E. Ross , Mohammad S. Islam
发明人： Paul Fisher , Christian E. Ross , Mohammad S. Islam
IPC分类号： H02P29/02
CPC分类号： H02P29/021 , B62D5/0481 , B62D15/021 , B62D15/0235 , H02P29/0241
摘要： A diagnostic system and method for an electric power steering system are provided. The diagnostic system includes a first microprocessor that determines a first relative position value indicating the relative rotational position of the rotatable shaft at the first time based on the signals from first and second position sensors. A second microprocessor determines a second relative position value indicating the relative rotational position of the rotatable shaft at the first time based on the signals from third and fourth position sensors. The first microprocessor determines whether the first relative position value is an acceptable value based on a difference between the first relative position value and the second relative position value.
摘要翻译：提供了一种用于电动助力转向系统的诊断系统和方法。诊断系统包括第一微处理器，其基于来自第一位置传感器和第二位置传感器的信号，确定第一相对位置值，该第一相对位置值指示可旋转轴在第一时间的相对旋转位置。第二微处理器基于来自第三位置传感器和第四位置传感器的信号确定第一相对位置值，该第二相对位置值指示可旋转轴在第一时间的相对旋转位置。第一微处理器基于第一相对位置值和第二相对位置值之间的差来确定第一相对位置值是否为可接受值。

2. 发明申请

US20140260683A1 NON-CONTACTING TORQUE SENSOR WITH INJECTION MOLDED MAGNETS 有权
标题翻译：非接触式扭矩传感器，带注射成型磁铁
公开(公告)号：US20140260683A1
公开(公告)日：2014-09-18
申请号：US13836922
申请日：2013-03-15
申请人： Mohammad S. Islam , Mazharul H. Chowdhury
发明人： Mohammad S. Islam , Mazharul H. Chowdhury
IPC分类号： G01L3/10
CPC分类号： G01L3/104 , G01L5/221
摘要： A non-contacting torque sensor comprises a magnetic flux generating rotor and a magnetic flux detecting probe. The magnetic flux generating rotor is disposed axially between a first stator and a second stator and has a radially outboard surface and plurality of N pole magnets and S pole magnets alternatingly disposed proximate the radially outboard surface. Each stator has a plurality of stator teeth, with each one of said plurality of stator teeth corresponding to a unique one of said plurality of N pole magnets and S pole magnets. The magnetic flux detecting probe is disposed at a distance from the radially outboard surface and configured for detecting variations in magnetic flux produced by the magnetic flux generating rotor to detect a change of a relative twist between the magnetic flux generating rotor and the first stator and second stator. The N pole magnets and S pole magnets are injection molded.
摘要翻译：非接触转矩传感器包括磁通发生转子和磁通量检测探头。磁通发生转子轴向设置在第一定子和第二定子之间，并且具有径向外侧表面和多个N极磁体和S极磁体，其交替地设置在径向外侧表面附近。每个定子具有多个定子齿，所述多个定子齿中的每一个对应于所述多个N极磁体和S极磁体中唯一的一个。所述磁通检测用探针配置在距离所述径向外侧表面一定距离处，并被配置为检测由所述磁通发生转子产生的磁通量的变化，以检测所述磁通量产生转子和所述第一定子之间的相对扭转的变化，以及所述第二定子定子。 N极磁体和S极磁体注塑成型。

3. 发明授权

US08726742B2 Torque sensing system having torque sensor, and steering system 有权
标题翻译：转矩传感系统具有转矩传感器和转向系统
公开(公告)号：US08726742B2
公开(公告)日：2014-05-20
申请号：US12952842
申请日：2010-11-23
申请人： Mohammad S. Islam , Mohammed Rakibul Islam , Matthew Mielke , Christian E. Ross , Scott Blehm
发明人： Mohammad S. Islam , Mohammed Rakibul Islam , Matthew Mielke , Christian E. Ross , Scott Blehm
IPC分类号： G01L3/02 , G01L3/00
CPC分类号： G01L3/104 , G01L5/221
摘要： A torque sensing system having a torque sensor, and a steering system, are provided. The torque sensor includes a first rotor having apertures extending therethrough and bar magnets disposed in the apertures. The torque sensor further includes a second rotor defining an interior region with the first rotor being disposed in the interior region. The second rotor has tooth members extending toward the first rotor. The torque sensor further includes first and second Hall effect sensors disposed in an open region of the second rotor proximate to the first rotor. The first and second Hall effect sensors generate first and second signals, respectively, indicative of an amount of torque applied between the first rotor and the second rotor.
摘要翻译：提供了一种具有转矩传感器和转向系统的转矩传感系统。扭矩传感器包括具有延伸穿过其中的孔的第一转子和设置在孔中的棒状磁体。转矩传感器还包括限定内部区域的第二转子，其中第一转子设置在内部区域中。第二转子具有向第一转子延伸的齿构件。转矩传感器还包括设置在靠近第一转子的第二转子的开放区域中的第一和第二霍尔效应传感器。第一和第二霍尔效应传感器分别产生指示施加在第一转子和第二转子之间的扭矩的量的第一和第二信号。

4. 发明申请

US20130320798A1 SYSTEM AND METHOD FOR REDUCING COGGING TORQUE IN AN INTERIOR PERMANENT MAGNET MOTOR 审中-公开
标题翻译：用于减少内部永磁电机中的凝固扭矩的系统和方法
公开(公告)号：US20130320798A1
公开(公告)日：2013-12-05
申请号：US13483514
申请日：2012-05-30
申请人： Mohammad S. Islam , Scott T. Blehm , Mazharul H. Chowdhury
发明人： Mohammad S. Islam , Scott T. Blehm , Mazharul H. Chowdhury
IPC分类号： H02K1/27
CPC分类号： H02K1/276
摘要： An interior permanent magnet motor comprises a rotor assembly disposed within a stator assembly. The rotor assembly is configured for rotating about a central axis relatively to the stator assembly. The rotor assembly defines a plurality of magnet pockets within the rotor assembly along a radially outboard surface of the rotor assembly. Each magnet pocket is substantially rectangular in cross-sectional shape and is configured to facilitate insertion of a permanent magnet into, and retention of the permanent magnet within, the magnet pocket. The rotor assembly further defines at least one rotor notch disposed between each magnet pocket and the radially outboard surface.
摘要翻译：内部永磁电动机包括设置在定子组件内的转子组件。转子组件被配置为相对于定子组件围绕中心轴线旋转。转子组件沿着转子组件的径向外侧表面限定转子组件内的多个磁体凹部。每个磁体袋基本上是矩形的横截面形状，并且构造成便于将永磁体插入磁体袋中并将永磁体保持在磁体袋内。转子组件进一步限定设置在每个磁体槽和径向外侧表面之间的至少一个转子槽。

5. 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。

6. 发明申请

US20100089686A1 MAGNETIC APPARATUS AND METHOD OF MANUFACTURING THE MAGNETIC APPARATUS 失效
标题翻译：磁性装置及制造磁性装置的方法
公开(公告)号：US20100089686A1
公开(公告)日：2010-04-15
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： B62D5/08 , B23P15/00 , F16K31/08
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。

7. 发明申请

US20090027045A1 Apparatus for sensing position and/or torque 有权
标题翻译：用于检测位置和/或扭矩的装置
公开(公告)号：US20090027045A1
公开(公告)日：2009-01-29
申请号：US11880502
申请日：2007-07-23
申请人： Mohammed R. Islam , Mohammad S. Islam , Matthew W Mielke , Tomy Sebastian , Sainan Feng
发明人： Mohammed R. Islam , Mohammad S. Islam , Matthew W Mielke , Tomy Sebastian , Sainan Feng
IPC分类号： G01R33/02
CPC分类号： G01D5/145 , G01L3/104
摘要： An apparatus for measuring relative displacement between a first shaft and a second shaft includes first and second rotor assemblies. The first rotor assembly is coupled to the first shaft and is centered on an axis. The second rotor assembly is coupled to the second shaft. The second rotor assembly has first and second stator plates. Each of the first and second stator plates includes an upper surface and a lower surface. The first and second stator plates include a plurality of teeth extending in a direction radial of the axis. The apparatus further includes at least one magnet having a magnetic field and disposed on the first rotor assembly. The apparatus includes a flux collector arrangement having first and second collectors positioned adjacent the first and second stator plates, respectively, forming a gap. A sensing device disposed within the gap senses a magnetic flux of the magnetic field.
摘要翻译：用于测量第一轴和第二轴之间的相对位移的装置包括第一和第二转子组件。第一转子组件联接到第一轴并以轴为中心。第二转子组件联接到第二轴。第二转子组件具有第一和第二定子板。第一和第二定子板中的每一个包括上表面和下表面。第一和第二定子板包括沿轴线的径向延伸的多个齿。该装置还包括至少一个具有磁场的磁体，并设置在第一转子组件上。该装置包括一个磁通收集装置，它具有分别邻近第一和第二定子板定位的第一和第二集电器，形成间隙。设置在间隙内的感测装置感测磁场的磁通量。

8. 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。

9. 发明授权

US07210360B2 Apparatus for sensing position and/or torque 失效
标题翻译：用于检测位置和/或扭矩的装置
公开(公告)号：US07210360B2
公开(公告)日：2007-05-01
申请号：US10864231
申请日：2004-06-09
申请人： Thaddeus Schroeder , Shaotang Chen , Avoki M Omekanda , Thomas W Nehl , Bruno Lequesne , Mohammad S Islam
发明人： Thaddeus Schroeder , Shaotang Chen , Avoki M Omekanda , Thomas W Nehl , Bruno Lequesne , Mohammad S Islam
IPC分类号： G01L3/02
CPC分类号： G01L3/104
摘要： An apparatus measures relative displacement between a first end and a second end of a shaft. The first and second ends being centered on a shaft axis. The apparatus includes first and second ferromagnetic plates. The first ferromagnetic plate has a first side and a second side and is connected to the first end. The first ferromagnetic plate is centered on the shaft axis and has a plurality of ferromagnetic teeth extending from the first side and in a first direction parallel to the shaft. The second ferromagnetic plate has a first side and a second side and is connected to the second end. The second ferromagnetic plate is centered on the shaft axis. The first and second ferromagnetic plates form a gap. The apparatus further includes a plurality of magnets having a magnetic field and a sensing device. The magnets are coupled to the first side of the second ferromagnetic plate. The sensing device is disposed within the gap for sensing a magnetic flux of the magnetic field.
摘要翻译：一种装置测量轴的第一端和第二端之间的相对位移。第一和第二端以轴的轴为中心。该装置包括第一和第二铁磁板。第一铁磁板具有第一侧和第二侧，并连接到第一端。第一铁磁板以轴线为中心，并且具有多个从第一侧延伸的铁磁齿和平行于轴的第一方向。第二铁磁板具有第一侧和第二侧，并连接到第二端。第二铁磁板以轴的轴为中心。第一和第二铁磁板形成间隙。该装置还包括具有磁场和感测装置的多个磁体。磁体与第二铁磁板的第一侧耦合。感测装置设置在间隙内以感测磁场的磁通量。

10. 发明授权

US06982537B2 Identification of parameters for switched reluctance electric machines 有权
标题翻译：开关磁阻电机参数识别
公开(公告)号：US06982537B2
公开(公告)日：2006-01-03
申请号：US10404420
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： H02P1/46
CPC分类号： B62D5/046 , H02P21/16
摘要： Disclosed herein is a method for parameter identification in a switched reluctance electric machine comprising: operating the switched reluctance electric machine in response to a desired command; and measuring an actual operating characteristic of the switched reluctance electric machine. The method also includes: modeling the switched reluctance electric machine to formulate an estimated operating characteristic based on the desired command; comparing the actual operating characteristic and the estimated operating characteristic to formulate an error there between; and determining a parameter estimate for the switched reluctance machine based on the error and a previous parameter estimate. Also disclosed herein is a system for estimating a parameter for a switched reluctance electric machine comprising: a switched reluctance electric machine including a sensor generating and transmitting a sensor signal indicative of a sensed characteristic; and a controller operatively coupled to the sensors executing the abovementioned methodology.
摘要翻译：本文公开了一种开关磁阻电机中的参数识别方法，包括：响应于所需命令操作开关磁阻电机; 并测量开关磁阻电机的实际工作特性。该方法还包括：对开关磁阻电机进行建模，以根据期望的指令制定估计的工作特性; 比较实际工作特性和估计的工作特性，以制定其间的误差; 以及基于所述误差和先前的参数估计来确定所述开关磁阻电机的参数估计。本文还公开了一种用于估计开关磁阻电机的参数的系统，包括：开关磁阻电机，其包括产生和发送指示感测特性的传感器信号的传感器; 以及可操作地耦合到执行上述方法的传感器的控制器。

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