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1. 发明授权

US08866428B2 Method and apparatus for thermally monitoring a permanent magnet electric motor 有权
标题翻译：用于永磁电动机的热监测方法和装置
公开(公告)号：US08866428B2
公开(公告)日：2014-10-21
申请号：US13151568
申请日：2011-06-02
申请人： Lei Hao , Yilu Zhang , Siwei Cheng
发明人： Lei Hao , Yilu Zhang , Siwei Cheng
IPC分类号： H02P7/00 , H02P29/02 , H02P29/00 , G01K7/22 , G01R31/34
CPC分类号： H02P29/0055 , G01K7/22 , G01K2205/00 , G01K2217/00 , G01R31/343 , H02P29/028 , H02P29/032 , H02P29/64
摘要： A method for determining a temperature of an electric motor including stator windings includes injecting an AC current into a D-axis current of a stator winding at a frequency that is synchronized with a control frequency of the electric motor, determining a DC-phase current, determining a resistance of the stator winding corresponding to the DC-phase current and an applied voltage, and determining a temperature of the electric motor as a function of the resistance of the stator winding.
摘要翻译：一种用于确定包括定子绕组的电动机的温度的方法包括以与电动机的控制频率同步的频率将AC电流注入到定子绕组的D轴电流中，确定DC相电流，确定对应于DC相电流的定子绕组的电阻和施加的电压，以及根据定子绕组的电阻确定电动机的温度。

2. 发明申请

US20120306422A1 METHOD AND APPARATUS FOR THERMALLY MONITORING A PERMANENT MAGNET ELECTRIC MOTOR 有权
标题翻译：用于永磁电机的热监测方法和装置
公开(公告)号：US20120306422A1
公开(公告)日：2012-12-06
申请号：US13151568
申请日：2011-06-02
申请人： Lei Hao , Yilu Zhang , Siwei Cheng
发明人： Lei Hao , Yilu Zhang , Siwei Cheng
IPC分类号： G01R31/34
CPC分类号： H02P29/0055 , G01K7/22 , G01K2205/00 , G01K2217/00 , G01R31/343 , H02P29/028 , H02P29/032 , H02P29/64
摘要： A method for determining a temperature of an electric motor including stator windings includes injecting an AC current into a D-axis current of a stator winding at a frequency that is synchronized with a control frequency of the electric motor, determining a DC-phase current, determining a resistance of the stator winding corresponding to the DC-phase current and an applied voltage, and determining a temperature of the electric motor as a function of the resistance of the stator winding.
摘要翻译：一种用于确定包括定子绕组的电动机的温度的方法包括以与电动机的控制频率同步的频率将AC电流注入到定子绕组的D轴电流中，确定DC相电流，确定对应于DC相电流的定子绕组的电阻和施加的电压，以及根据定子绕组的电阻确定电动机的温度。

3. 发明授权

US08766564B2 Method of reducing the effect of preheat time variation during shape memory alloy actuation 有权
标题翻译：减少形状记忆合金致动期间预热时间变化的影响的方法
公开(公告)号：US08766564B2
公开(公告)日：2014-07-01
申请号：US13251415
申请日：2011-10-03
申请人： Xiujie Gao , Lei Hao , Paul W. Alexander , Guillermo A. Herrera , Nancy L. Johnson , Geoffrey P. McKnight , Alan L. Browne
发明人： Xiujie Gao , Lei Hao , Paul W. Alexander , Guillermo A. Herrera , Nancy L. Johnson , Geoffrey P. McKnight , Alan L. Browne
IPC分类号： H02N10/00 , H02P3/00
CPC分类号： G05B19/404 , G05B2219/41032 , G05B2219/49206
摘要： A system for and method of reducing the effects of preheat period variation in shape memory alloy actuation, include sensing the removal of motion delay due to slack, backlash, and/or compliance in the actuator and drive-train of the system, and determining actuator activation, as a result thereof.
摘要翻译：减小形状记忆合金致动中预热周期变化的影响的系统和方法包括感测由于系统的致动器和传动系中的松弛，间隙和/或顺应性而导致的运动延迟的消除，以及确定致动器作为其结果的激活。

4. 发明授权

US08729765B2 Field coil for an electric machine 有权
标题翻译：用于电机的励磁线圈
公开(公告)号：US08729765B2
公开(公告)日：2014-05-20
申请号：US13191385
申请日：2011-07-26
申请人： Lei Hao
发明人： Lei Hao
IPC分类号： H02K1/00
CPC分类号： H02K3/12
摘要： A field coil segment for an electric machine including a rotor and a stator includes a first wire element having a first cross sectional area electrically connected in parallel with a second wire element having a second cross sectional area greater than the first cross sectional area.
摘要翻译：包括转子和定子的电机的励磁线圈段包括具有与第二横截面积大于第一横截面积的第二线元件并联电连接的第一横截面面积的第一线元件。

5. 发明授权

US08680802B2 Electric drive with electronically scalable reconfigurable winding 有权
公开(公告)号：US08680802B2
公开(公告)日：2014-03-25
申请号：US13151532
申请日：2011-06-02
申请人： Sanjeev M. Naik , Lei Hao
发明人： Sanjeev M. Naik , Lei Hao
IPC分类号： H02P1/42
摘要： A stator phase circuit for an electric machine includes a phase winding circuit including a plurality of series coupled sub-winding circuits, each sub-winding circuit includes a respective sub-winding coupled in parallel across a respective first controllable switch.

6. 发明授权

US08179018B2 Active material actuator regulation utilizing piezoelectric and piezoresistive effect 有权
标题翻译：使用压电和压阻效应的主动材料致动器调节
公开(公告)号：US08179018B2
公开(公告)日：2012-05-15
申请号：US12546857
申请日：2009-08-25
申请人： Xiujie Gao , Alan L. Browne , Nancy L. Johnson , Paul W. Alexander , Lei Hao , Ke Dong
发明人： Xiujie Gao , Alan L. Browne , Nancy L. Johnson , Paul W. Alexander , Lei Hao , Ke Dong
IPC分类号： H02N10/00
CPC分类号： H01L41/1132 , H01L41/125
摘要： An active material actuator adapted for use in a circuit includes an active material member, and a piezoelectric or piezoresistive element or otherwise force sensing device, wherein the element or device is communicatively coupled to the member and operable to vary the current within the circuit when the member is caused to achieve a predetermined stress, such that, in one aspect, the element presents an overload protection mechanism.
摘要翻译：适于在电路中使用的活性材料致动器包括活性材料构件和压电或压阻元件或其他力感测装置，其中元件或装置可通信地耦合到构件并且可操作以在电路内改变电流时导致构件达到预定的应力，使得在一个方面，元件具有过载保护机构。

7. 发明申请

US20120109573A1 METHOD OF DETERMINING A HEAT TRANSFER CONDITION FROM A RESISTANCE CHARACTERISTIC OF A SHAPE MEMORY ALLOY ELEMENT 审中-公开
标题翻译：从形状记忆合金元素的电阻特性确定热传递条件的方法
公开(公告)号：US20120109573A1
公开(公告)日：2012-05-03
申请号：US12938683
申请日：2010-11-03
申请人： Xiujie Gao , Alan L. Browne , Nancy L. Johnson , Guillermo A. Herrera , Geoffrey P. McKnight , Lei Hao , Andrew C. Keefe , Christopher P. Henry
发明人： Xiujie Gao , Alan L. Browne , Nancy L. Johnson , Guillermo A. Herrera , Geoffrey P. McKnight , Lei Hao , Andrew C. Keefe , Christopher P. Henry
IPC分类号： G06F15/00 , F24J3/00 , G01N25/00
CPC分类号： G01N25/18
摘要： A method of sensing an ambient heat transfer condition surrounding a shape memory alloy element includes heating the shape memory alloy element, sensing the resistance of the shape memory alloy element, and measuring the period of time taken to heat the shape memory alloy element to a pre-determined level of a resistance characteristic. The ambient heat transfer condition surrounding the shape memory alloy element is calculated by referencing a relationship between the period of time taken to heat the shape memory alloy to the pre-determined level of the resistance characteristic and the ambient heat transfer condition.
摘要翻译：检测形状记忆合金元件周围的环境传热条件的方法包括加热形状记忆合金元件，感测形状记忆合金元件的电阻，以及测量将形状记忆合金元件加热到预先形成的时间确定电阻特性的水平。通过参照将形状记忆合金加热所需的时间与预定的电阻特性水平和环境传热条件之间的关系来计算围绕形状记忆合金元件的环境传热条件。

8. 发明申请

US20100332151A1 METHOD FOR OVERLOAD PROTECTION OF SMA DEVICE 有权
标题翻译： SMA器件过载保护方法
公开(公告)号：US20100332151A1
公开(公告)日：2010-12-30
申请号：US12797911
申请日：2010-06-10
申请人： Lei Hao , Xiujie Gao , Sanjeev M. Naik
发明人： Lei Hao , Xiujie Gao , Sanjeev M. Naik
IPC分类号： G01L1/00 , G06F19/00
CPC分类号： H02N2/142 , H02N2/10
摘要： A method for detecting a mechanical overload condition of an energized linear actuator to prevent commanding an activation signal to the linear actuator that may mechanically overload the linear actuator includes monitoring feedback variation of a movable element associated with the linear actuator including monitoring a present feedback signal of the movable element, monitoring a previous feedback signal of the movable element, comparing the present feedback signal and the previous feedback signal and determining the feedback variation based on the comparing. The feedback variation is compared to a feedback variation threshold. An input signal associated with the activation signal for controlling the linear actuator is monitored and the input signal compared to an input signal threshold. The electrical overload condition is detected when the feedback variation is less than the feedback variation threshold and the input signal is greater than the input signal threshold.
摘要翻译：一种用于检测通电的线性致动器的机械过载状况以防止对线性致动器的启动信号的指令，该线性致动器可以使线性致动器机械地过载，包括监测与线性致动器相关联的可移动元件的反馈变化，包括监视与线性致动器的当前反馈信号可移动元件，监测可移动元件的先前反馈信号，比较当前反馈信号和先前反馈信号，并基于该比较确定反馈变化。将反馈变化与反馈变化阈值进行比较。监测与用于控制线性致动器的激活信号相关联的输入信号，并将输入信号与输入信号阈值进行比较。当反馈变化小于反馈变化阈值并且输入信号大于输入信号阈值时，检测到电气过载状况。

9. 发明申请

US20100244610A1 Optimized Electric Machine for Smart Actuators 有权
标题翻译：智能执行器优化电机
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
IPC分类号： H02K1/00 , H02K3/00
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。

10. 发明授权

US07622882B2 Position detection device for permanent magnetic machines 有权
标题翻译：永磁机位置检测装置
公开(公告)号：US07622882B2
公开(公告)日：2009-11-24
申请号：US11841226
申请日：2007-08-20
申请人： Lei Hao , Zilai Zhao
发明人： Lei Hao , Zilai Zhao
IPC分类号： H02P1/46
CPC分类号： H02P21/18
摘要： The invention indicates a correct one of multiple rotor positions. For example, the invention can determine, in a PM machine, which of two possible positions a rotor is in when the position is known only within ±π radians. If the actual rotor position is known to be one of ω and ω+π, for example as indicated by a resolver, the proposed invention can be used to determine whether the actual position is ω or ω+π.
摘要翻译：本发明指出了多个转子位置中的正确的一个。例如，本发明可以在PM机器中确定当位置仅在±pi弧度内已知位置时，转子处于两个可能位置中的哪一个位置。如果实际的转子位置已知为ω和ω+ pi之一，例如由分解器指示，则所提出的发明可用于确定实际位置是ω或ω+ pi。

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