公开(公告)号：US20050039548A1

公开(公告)日：2005-02-24

申请号：US10943535

申请日：2004-09-17

申请人： Mohammad Islam ,  Sayeed Mir ,  Tomy Sebastian ,  Christian Ross

发明人： Mohammad Islam ,  Sayeed Mir ,  Tomy Sebastian ,  Christian 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。

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：US20050062452A1

公开(公告)日：2005-03-24

申请号：US10961913

申请日：2004-10-08

申请人： Sayeed Mir ,  Tomy Sebastian

发明人： Sayeed Mir ,  Tomy Sebastian

IPC分类号： H02P25/08 ,  H02P7/36

CPC分类号： H02P25/092

摘要： A method for determining phase current for each of a plurality of individual phase coils of a switched reluctance machine (SRM) is disclosed. In an exemplary embodiment, the method includes determining the current passing through a first resistive element and a second resistive element in an SRM drive circuit. A conduction mode of the SRM drive circuit is determined, the conduction mode being based upon an ON/OFF state of each of a pair of switching transistors controlling current through each of the plurality of individual phase coils. The phase current through each of the plurality of individual phase coils is then calculated, based upon the conduction mode and the determined current passing through said first and second resistive elements.

摘要翻译： 公开了一种用于确定开关磁阻电机（SRM）的多个单相线圈中的每一个的相电流的方法。 在示例性实施例中，该方法包括确定通过SRM驱动电路中的第一电阻元件和第二电阻元件的电流。 确定SRM驱动电路的导通模式，导通模式基于控制通过多个单相相线圈中的每一个的电流的一对开关晶体管中的每一个的导通/截止状态。 然后基于导通模式和通过所述第一和第二电阻元件确定的电流来计算通过多个单独相线圈中的每一个的相电流。

公开(公告)号：US20070108937A1

公开(公告)日：2007-05-17

申请号：US11122687

申请日：2005-05-05

申请人： Sayeed Mir

发明人： Sayeed Mir

IPC分类号： H02P27/04

CPC分类号： H02P21/10 ,  H02P21/0089

摘要： A method and system for controlling an electric machine using voltage mode control comprising: receiving a voltage command, the voltage command corresponding to a voltage control command for a position control loop, the position control loop configured to control a position of the electric machine; receiving a motor velocity signal; and determining a q-axis current. The method also includes computing a d-axis current to supplement the torque if a magnitude of a voltage supply for exciting the electric machine is not sufficient to provide a torque corresponding to the q-axis current, otherwise establishing the d-axis current at about zero; and generating command voltages for controlling the electric machine corresponding to the q-axis current and the d-axis current.

摘要翻译： 一种使用电压模式控制来控制电机的方法和系统，包括：接收电压命令，对应于位置控制回路的电压控制指令的电压指令，所述位置控制回路被配置为控制所述电机的位置; 接收电机速度信号; 并确定q轴电流。 该方法还包括计算d轴电流以补充转矩，如果用于激励电机的电压供应的幅度不足以提供与q轴电流相对应的转矩，否则在约 零; 并产生用于控制对应于q轴电流和d轴电流的电机的指令电压。

公开(公告)号：US20060176059A1

公开(公告)日：2006-08-10

申请号：US11052485

申请日：2005-02-04

申请人： Sayeed Mir ,  Paul Fisher ,  Daniel Shafer ,  Samuel Underwood

发明人： Sayeed Mir ,  Paul Fisher ,  Daniel Shafer ,  Samuel Underwood

IPC分类号： G01R31/00

CPC分类号： G01R31/343 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method and system for obtaining motor current measurements from a DC bus current of an inverter that drives a pulse width modulated electric machine is disclosed. The method may include sensing a DC bus current in a sensor located on a bus of an inverter; sampling the DC bus current via an analog to digital converter wherein the sampling is controlled by sampling timing that is based on a pulse width modulation timing of the inverter; and determining three AC phase currents of the motor from the sampled DC bus current.

摘要翻译： 公开了一种用于从驱动脉宽调制电机的逆变器的直流总线电流获得电动机电流测量的方法和系统。 该方法可以包括感测位于逆变器的总线上的传感器中的DC总线电流; 通过模数转换器对DC总线电流进行采样，其中采样基于逆变器的脉冲宽度调制定时由采样定时控制; 并从采样的直流母线电流确定电动机的三个交流相电流。

公开(公告)号：US20050043873A1

公开(公告)日：2005-02-24

申请号：US10645118

申请日：2003-08-21

申请人： Sayeed Mir ,  Yulei Chen

发明人： Sayeed Mir ,  Yulei Chen

IPC分类号： B62D5/04 ,  H02P21/00 ,  H02P23/00 ,  H02P29/02

CPC分类号： B62D5/046 ,  H02P23/0004 ,  H02P29/032

摘要： A method and apparatus for limiting current and voltage in a PM electric machine comprising: receiving a command indicative of a desired position control; obtaining a velocity value indicative of the rotational velocity of the electric machine; and computing a first voltage threshold for the electric machine based on a selected operating condition. If the voltage command exceeds the first voltage threshold, the method also includes establishing a modified voltage command as substantially equivalent to the first voltage threshold, otherwise establishing a modified voltage command as substantially equivalent to the voltage command.

摘要翻译： 一种用于限制PM电机中的电流和电压的方法和装置，包括：接收指示期望位置控制的指令; 获得表示电机转速的速度值; 以及基于所选择的操作条件计算所述电机的第一电压阈值。 如果电压指令超过第一电压阈值，则该方法还包括建立与第一电压阈值基本相等的修正电压指令，否则建立修改的电压指令，基本上等于电压指令。