公开(公告)号：US06498451B1

公开(公告)日：2002-12-24

申请号：US09656116

申请日：2000-09-06

申请人： Nady Boules ,  Rassem Ragheb Henry ,  Chandra Sekhar Namuduri ,  Thomas Wolfgang Nehl ,  Bruno Patrice Bernard ,  Shaotang Chen

发明人： Nady Boules ,  Rassem Ragheb Henry ,  Chandra Sekhar Namuduri ,  Thomas Wolfgang Nehl ,  Bruno Patrice Bernard ,  Shaotang Chen

IPC分类号： G05B116

CPC分类号： B62D5/0403 ,  H02K7/116 ,  H02K29/03 ,  H02K29/08 ,  H02P6/10 ,  H02P2209/07

摘要： Disclosed is an electric motor system with reduced torque ripple comprising a sinusoidally magnetized permanent magnet, a sinusoidal inverter, a higher resolution position sensor, a composite iron stator yoke, a composite reinforced plastic rotor core and shaft; and a high gear ratio gear reduction box. The novel combination of magnet, inverter, sensor, plastic rotor core and shaft and high gear ratio gear box substantially reduces the torque ripple on the shaft of said motor system.

摘要翻译： 公开了一种具有减小的转矩波动的电动机系统，包括正弦磁化永磁体，正弦逆变器，更高分辨率位置传感器，复合铁定子磁轭，复合增强塑料转子芯和轴; 和高齿轮减速箱。 磁铁，变频器，传感器，塑料转子铁芯，轴和高速齿轮箱的新颖组合大大减少了所述电机系统的轴上的扭矩波动。

公开(公告)号：US06329782B1

公开(公告)日：2001-12-11

申请号：US09650170

申请日：2000-08-29

申请人： Shaotang Chen ,  Nady Boules ,  Bruno Patrice Bernard Lequesne

发明人： Shaotang Chen ,  Nady Boules ,  Bruno Patrice Bernard Lequesne

IPC分类号： H02P124

CPC分类号： H02P6/16 ,  B62D5/046

摘要： A method and an apparatus using the method that generates an index pulse which includes firstly the generation of a first electronic signal which includes a first level and a second level based upon a multiphase sinusoidal motor control circuit. Secondly, the generation of at least a second electronic signal that includes a first level and a second level based upon a multiphase sinusoidal motor control circuit wherein the first electronic signal and the second electronic signal are levelly spaced apart based upon the phase number of the multiphase sinusoidal motor control circuit wherein a set difference in level exists for a first specified period between the first and said the signal. Thirdly, the determination of the index pulse based upon a transition from the first level to the second level of the first electronic signal.

摘要翻译： 一种使用该方法生成索引脉冲的方法和装置，该索引脉冲首先基于多相正弦电机控制电路产生包括第一电平和第二电平的第一电子信号。 其次，基于多相正弦电动机控制电路生成包括第一电平和第二电平的至少第二电子信号，其中基于多相位的相位数，第一电子信号和第二电子信号被高度间隔开 正弦电机控制电路，其中在第一和所述信号之间的第一指定周期存在电平的设定差。 第三，基于从第一电子信号的第一电平到第二电平的转变来确定索引脉冲。

公开(公告)号：US06498449B1

公开(公告)日：2002-12-24

申请号：US09663900

申请日：2000-09-18

申请人： Shaotang Chen ,  Chandra Sekhar Namuduri

发明人： Shaotang Chen ,  Chandra Sekhar Namuduri

IPC分类号： H02K1732

CPC分类号： H02P6/10 ,  B62D5/046 ,  H02P6/06 ,  H02P6/08 ,  H02P6/17 ,  H02P21/22

摘要： A method and apparatus for controlling the torque of and reducing torque ripple in a permanent magnet motor without using current sensors. By eliminating the need for current sensors, low frequency torque ripple is reduced. A voltage mode control method is implemented to control the motor. In response to the position and speed of the rotor and a torque command signal, a controller develops motor voltage command signals indicative of the voltage required to produce the desired motor torque. A rotor position encoder determines the angular positions of the rotor. From the angular positions of the rotor, a speed measuring circuit determines the speed of the rotor. The position and speed signals are applied to the controller. The controller uses this information and develops the motor voltage command signals indicative of the voltage needed to produce the desired motor torque. An inverter is coupled between a power source and the controller. The circuit applies phase voltages to the motor, in response to the motor voltage command signals, to produce the desired motor torque.

摘要翻译： 一种用于在不使用电流传感器的情况下控制永磁电动机的扭矩和减小转矩波动的方法和装置。 通过消除对电流传感器的需要，降低了低频转矩波动。 实施电压模式控制方法来控制电动机。 响应于转子的位置和速度以及转矩指令信号，控制器产生指示产生所需电动机转矩所需的电压的电动机电压指令信号。 转子位置编码器确定转子的角位置。 从转子的角度位置，速度测量电路确定转子的速度。 位置和速度信号被施加到控制器。 控制器使用该信息并开发指示产生所需电动机转矩所需的电压的电动机电压指令信号。 逆变器耦合在电源和控制器之间。 该电路根据电动机电压指令信号向电动机施加相电压，以产生所需的电动机转矩。

公开(公告)号：US06411052B1

公开(公告)日：2002-06-25

申请号：US09655582

申请日：2000-09-06

申请人： Sayeed A. Mir ,  Abbas Fardoun ,  Shaotang Chen

发明人： Sayeed A. Mir ,  Abbas Fardoun ,  Shaotang Chen

IPC分类号： H02K1732

CPC分类号： H02P6/10 ,  H02P6/34

摘要： An apparatus and method are described for adjusting the modeled resistance used in the control of an electric motor drive to match the actual resistance of the motor. The system comprises sensors for measuring motor current and motor speed, which data is inputted into a processing unit. The processor uses the measured rotational speed to calculate what the proper current should be based upon the torque desired. If the calculated current is not equal to the measured current, then the modeled resistance of the motor is altered to correct the current. The invention is particularly useful for permanent magnet brushless motors operating in voltage mode.

摘要翻译： 描述了一种用于调节在电动机驱动器的控制中使用的建模电阻以匹配电动机的实际电阻的装置和方法。 该系统包括用于测量电动机电流和电动机速度的传感器，该数据被输入到处理单元中。 处理器使用测量的转速来计算基于所需扭矩的适当电流值。 如果计算出的电流不等于测量电流，则改变电机的建模电阻以校正电流。 本发明对于在电压模式下工作的永磁无刷电动机特别有用。

公开(公告)号：US07298967B2

公开(公告)日：2007-11-20

申请号：US11111389

申请日：2005-04-21

申请人： Shaotang Chen ,  Sayeed A. Mir ,  Tom C. Wong ,  Christian Ross ,  Tomy Sebastian

发明人： Shaotang Chen ,  Sayeed A. Mir ,  Tom C. Wong ,  Christian Ross ,  Tomy Sebastian

IPC分类号： H02P7/29

CPC分类号： B62D5/046

摘要： A method of interfacing an electromagnetic sensor with a controller in a motor control system, the method including: applying an excitation signal to the electromagnetic sensor; receiving a first electromagnetic sensor output signal based on the excitation signal, the first electromagnetic sensor signal comprising an amplitude modulated signal corresponding to a position of a rotor of the electromagnetic sensor; and receiving a second electromagnetic sensor output signal based on the excitation signal, the second electromagnetic sensor signal comprising another amplitude modulated signal corresponding to the position of the rotor of the electromagnetic sensor. The method also includes sampling the first electromagnetic sensor signal and the second electromagnetic sensor signal at about an instance synchronous with the excitation signal to demodulate the first electromagnetic sensor signal and the second electromagnetic sensor signal and decoding a resultant of the sampling to identify the position of a rotor of the electromagnetic sensor.

摘要翻译： 一种在电动机控制系统中将电磁传感器与控制器接口的方法，所述方法包括：向所述电磁传感器施加激励信号; 基于所述激励信号接收第一电磁传感器输出信号，所述第一电磁传感器信号包括对应于所述电磁传感器的转子的位置的振幅调制信号; 并且基于所述激励信号接收第二电磁传感器输出信号，所述第二电磁传感器信号包括对应于所述电磁传感器的转子位置的另一幅度调制信号。 该方法还包括在与激励信号同步的情况下采样第一电磁传感器信号和第二电磁传感器信号，以解调第一电磁传感器信号和第二电磁传感器信号，并对采样的结果进行解码，以识别 电磁传感器的转子。

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。

公开(公告)号：US5841644A

公开(公告)日：1998-11-24

申请号：US711674

申请日：1996-09-04

申请人： Thomas A. Lipo ,  Shaotang Chen

发明人： Thomas A. Lipo ,  Shaotang Chen

IPC分类号： H02M7/48 ,  H02M5/45

CPC分类号： H02M7/4826

摘要： A passively clamped quasi-resonant DC link ("PCQRL") converter includes an output inverter having a plurality of switches, and a DC link between a DC power source and the output inverter. The DC link is realized by a clamp transformer having a clamp factor not higher than 1.1-1.3 and a small auxiliary inductance which is switched by a pair of auxiliary switches (driven by the same gating signal) and a pair of diodes. When the auxiliary switches are turned "ON", the DC link voltage drops to zero; and the switches of the output inverter then can be switched under zero voltage condition with no switching losses. Most of the modulation schemes, including PWM, are applicable to the DC link design.

摘要翻译： 被动钳位的准谐振直流链路（“PCQRL”）转换器包括具有多个开关的输出反相器和直流电源与输出反相器之间的直流链路。 直流母线由具有不高于1.1-1.3的钳位因数的钳位变压器和由一对辅助开关（由同一门控信号驱动）和一对二极管切换的小型辅助电感实现。 辅助开关“ON”时，直流母线电压降至零; 输出逆变器的开关可以在零电压条件下切换，无切换损耗。 大多数调制方案，包括PWM，都适用于直流链路设计。

公开(公告)号：US20060241790A1

公开(公告)日：2006-10-26

申请号：US11111389

申请日：2005-04-21

申请人： Shaotang Chen ,  Sayeed Mir ,  Tom Wong ,  Christian Ross ,  Tomy Sebastian

发明人： Shaotang Chen ,  Sayeed Mir ,  Tom Wong ,  Christian Ross ,  Tomy Sebastian

IPC分类号： G05B19/18

CPC分类号： B62D5/046

摘要： A method of interfacing an electromagnetic sensor with a controller in a motor control system, the method including: applying an excitation signal to the electromagnetic sensor; receiving a first electromagnetic sensor output signal based on the excitation signal, the first electromagnetic sensor signal comprising an amplitude modulated signal corresponding to a position of a rotor of the electromagnetic sensor; and receiving a second electromagnetic sensor output signal based on the excitation signal, the second electromagnetic sensor signal comprising another amplitude modulated signal corresponding to the position of the rotor of the electromagnetic sensor. The method also includes sampling the first electromagnetic sensor signal and the second electromagnetic sensor signal at about an instance synchronous with the excitation signal to demodulate the first electromagnetic sensor signal and the second electromagnetic sensor signal and decoding a resultant of the sampling to identify the position of a rotor of the electromagnetic sensor.

摘要翻译： 一种在电动机控制系统中将电磁传感器与控制器接口的方法，所述方法包括：向所述电磁传感器施加激励信号; 基于所述激励信号接收第一电磁传感器输出信号，所述第一电磁传感器信号包括对应于所述电磁传感器的转子的位置的振幅调制信号; 并且基于所述激励信号接收第二电磁传感器输出信号，所述第二电磁传感器信号包括对应于所述电磁传感器的转子位置的另一幅度调制信号。 该方法还包括在与激励信号同步的情况下采样第一电磁传感器信号和第二电磁传感器信号，以解调第一电磁传感器信号和第二电磁传感器信号，并对采样的结果进行解码，以识别 电磁传感器的转子。

公开(公告)号：US06987375B2

公开(公告)日：2006-01-17

申请号：US10283880

申请日：2002-10-30

申请人： Shaotang Chen

发明人： Shaotang Chen

IPC分类号： H02P7/36

CPC分类号： H02K19/103 ,  H02P25/092

摘要： A dual stage drive for a switched reluctance motor (SRM) is disclosed, the SRM having a plurality of phase coils associated therewith. In an exemplary embodiment, the dual stage drive includes at least one of the plurality of phase coils coupled to a first power bus, and at least another one of the plurality of phase coils coupled to a second power bus. Energy within the at least one phase coil coupled to said first power bus is dissipated through said second power bus.

摘要翻译： 公开了用于开关磁阻电动机（SRM）的双级驱动器，SRM具有与其相关联的多个相线圈。 在示例性实施例中，双级驱动器包括耦合到第一电源总线的多个相位线圈中的至少一个以及耦合到第二电力总线的多个相位线圈中的至少另一个。 耦合到所述第一电力总线的至少一个相线圈内的能量通过所述第二电力总线消散。

公开(公告)号：US06693403B2

公开(公告)日：2004-02-17

申请号：US10068524

申请日：2002-02-05

申请人： Shaotang Chen

发明人： Shaotang Chen

IPC分类号： H02P736

CPC分类号： H02P25/08 ,  H02P29/02 ,  Y10S320/13

摘要： A dual voltage motor drive is disclosed. In an exemplary embodiment, the motor includes a rotor assembly, rotatingly disposed within a stator assembly, and a plurality of motor phase windings configured to be energized in a determined sequence to cause a rotation of the rotor assembly. The plurality of motor phase windings are divided into a first group of windings selectively energized by a first voltage source, and a second group of windings selectively energized by a second voltage source, wherein the motor remains operational in the event of a failure of one of the first and second voltage sources.

摘要翻译： 公开了一种双电压电动机驱动器。 在示例性实施例中，电动机包括旋转地设置在定子组件内的转子组件和多个电动机相绕组，其被配置成以确定的顺序被激励以引起转子组件的旋转。 多个电动机相绕组被分成由第一电压源选择性地激励的第一组绕组和由第二电压源选择性地激励的第二组绕组，其中在发生故障的情况下，电机保持工作 第一和第二电压源。