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1. 发明授权

US08862328B2 System and method for determining an absolute position of a motor shaft in an electric steering system 有权
标题翻译：用于确定电动转向系统中的电动机轴的绝对位置的系统和方法
公开(公告)号：US08862328B2
公开(公告)日：2014-10-14
申请号：US13106031
申请日：2011-05-12
申请人： Abraham Gebregergis , Paul Fisher , Christian E. Ross
发明人： Abraham Gebregergis , Paul Fisher , Christian E. Ross
IPC分类号： B62D15/02 , B62D5/04
CPC分类号： B62D15/021 , B62D5/0418 , B62D5/0481 , B62D15/0235
摘要： A system and a method for determining an absolute position of a motor shaft in an electric power steering system during an ignition off state are provided. The system includes a microprocessor that energizes first and second position sensors to generate first and second signals, respectively, at a first time, and third and fourth signals, respectively, at a second time. The microprocessor determines a first relative position value based on the first and second signals, and a second relative position value based on the third and fourth signals. The microprocessor determines an amount of relative rotation of the shaft during the ignition off state based on the first and second relative position values, and determines a current absolute position value based on a previously stored absolute position value and the amount of relative rotation of the rotatable shaft.
摘要翻译：提供了一种用于在点火关闭状态期间确定电动助力转向系统中的电动机轴的绝对位置的系统和方法。该系统包括微处理器，其激励第一和第二位置传感器，以分别在第一时间分别产生第一和第二信号以及第三和第四信号。微处理器基于第一和第二信号确定第一相对位置值，并且基于第三和第四信号确定第二相对位置值。微处理器基于第一和第二相对位置值确定点火关闭状态期间轴的相对旋转量，并且基于先前存储的绝对位置值和可旋转的相对旋转量确定当前绝对位置值轴。

2. 发明申请

US20110282552A1 SYSTEM AND METHOD FOR DETERMINING AN ABSOLUTE POSITION OF A MOTOR SHAFT IN AN ELECTRIC STEERING SYSTEM 有权
标题翻译：用于确定电动转向系统中电机轴的绝对位置的系统和方法
公开(公告)号：US20110282552A1
公开(公告)日：2011-11-17
申请号：US13106031
申请日：2011-05-12
申请人： Abraham Gebregergis , Paul Fisher , Christian E. Ross
发明人： Abraham Gebregergis , Paul Fisher , Christian E. Ross
IPC分类号： B62D15/02
CPC分类号： B62D15/021 , B62D5/0418 , B62D5/0481 , B62D15/0235
摘要： A system and a method for determining an absolute position of a motor shaft in an electric power steering system during an ignition off state are provided. The system includes a microprocessor that energizes first and second position sensors to generate first and second signals, respectively, at a first time, and third and fourth signals, respectively, at a second time. The microprocessor determines a first relative position value based on the first and second signals, and a second relative position value based on the third and fourth signals. The microprocessor determines an amount of relative rotation of the shaft during the ignition off state based on the first and second relative position values, and determines a current absolute position value based on a previously stored absolute position value and the amount of relative rotation of the rotatable shaft.
摘要翻译：提供了一种用于在点火关闭状态期间确定电动助力转向系统中的电动机轴的绝对位置的系统和方法。该系统包括微处理器，其激励第一和第二位置传感器，以分别在第一时间分别产生第一和第二信号以及第三和第四信号。微处理器基于第一和第二信号确定第一相对位置值，并且基于第三和第四信号确定第二相对位置值。微处理器基于第一和第二相对位置值确定点火关闭状态期间轴的相对旋转量，并且基于先前存储的绝对位置值和可旋转的相对旋转量确定当前绝对位置值轴。

3. 发明授权

US08924082B2 System and method for controlling a motor 有权
标题翻译：用于控制电机的系统和方法
公开(公告)号：US08924082B2
公开(公告)日：2014-12-30
申请号：US13435995
申请日：2012-03-30
申请人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Niharika P. Popy
发明人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Niharika P. Popy
IPC分类号： B62D6/00
CPC分类号： H02P6/08 , B60L15/025 , B62D5/046 , H02P6/17 , Y02T10/643 , Y02T10/7258
摘要： A method for controlling operation of a torque-assist motor includes determining a rotational position of the torque-assist motor and producing a motor speed signal that is indicative of a rotational speed of the motor. One or more gain factors are produced based on the rotational speed of the torque-assist motor. An electrical current applied to the torque-assist motor is detected, and a current error is calculated based on a commanded electrical current and the electrical current applied to the torque-assist motor. A quadrature axis voltage is calculated based on the current error and the one or more gain factors. An inverter is driven with a direct voltage signal that is phased with the rotational position of the torque-assist motor so as to produce the electrical current applied to the torque-assist motor. The electrical current exhibits a characteristic that is affected by the quadrature axis voltage.
摘要翻译：一种用于控制扭矩辅助马达的操作的方法包括确定扭矩辅助马达的旋转位置并产生指示马达的转速的马达速度信号。基于转矩辅助电动机的转速产生一个或多个增益因子。检测施加到转矩辅助电动机的电流，并且基于所指示的电流和施加到转矩辅助电动机的电流来计算电流误差。基于电流误差和一个或多个增益因子计算正交轴电压。逆变器由与转矩辅助电动机的转动位置相对准的直流电压信号驱动，以产生施加于转矩辅助电动机的电流。电流表现出受正交轴电压影响的特性。

4. 发明申请

US20140265951A1 MOTOR CONTROL SYSTEM FOR DETERMINING A REFERENCE D-AXIS CURRENT AND A Q-AXIS CURRENT 有权
标题翻译：用于确定参考D轴电流和Q轴电流的电机控制系统
公开(公告)号：US20140265951A1
公开(公告)日：2014-09-18
申请号：US13795261
申请日：2013-03-12
申请人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Siddharth Ballal
发明人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Siddharth Ballal
IPC分类号： H02P21/00
CPC分类号： H02P21/22
摘要： A motor control system for determining a reference d-axis current and a reference q-axis current is provided. The motor control system includes a motor, a DC power source and DC input lines, and a current command controller. The DC power source generates a bridge voltage across the DC input lines. The current command controller is configured to monitor the bridge voltage and a torque reference command. The current command controller is configured to calculate the reference q-axis current based on a torque reference command. The current command controller is configured to calculate the reference d-axis current based on a magnitude of the reference q-axis current.
摘要翻译：提供了用于确定参考d轴电流和参考q轴电流的电动机控制系统。电动机控制系统包括电动机，直流电源和直流输入线以及电流指令控制器。直流电源通过直流输入线产生桥电压。电流指令控制器被配置为监视桥电压和转矩参考指令。电流指令控制器被配置为基于转矩参考指令来计算参考q轴电流。电流指令控制器被配置为基于参考q轴电流的大小来计算参考d轴电流。

5. 发明授权

US09461574B2 Motor control system for determining a reference d-axis current and a q-axis current 有权
标题翻译：用于确定参考d轴电流和q轴电流的电机控制系统
公开(公告)号：US09461574B2
公开(公告)日：2016-10-04
申请号：US13795261
申请日：2013-03-12
申请人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Siddharth Ballal
发明人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Siddharth Ballal
IPC分类号： H02P21/00
CPC分类号： H02P21/22
摘要： A motor control system for determining a reference d-axis current and a reference q-axis current is provided. The motor control system includes a motor, a DC power source and DC input lines, and a current command controller. The DC power source generates a bridge voltage across the DC input lines. The current command controller is configured to monitor the bridge voltage and a torque reference command. The current command controller is configured to calculate the reference q-axis current based on a torque reference command. The current command controller is configured to calculate the reference d-axis current based on a magnitude of the reference q-axis current.
摘要翻译：提供了用于确定参考d轴电流和参考q轴电流的电动机控制系统。电动机控制系统包括电动机，直流电源和直流输入线以及电流指令控制器。直流电源通过直流输入线产生桥电压。电流指令控制器被配置为监视桥电压和转矩参考指令。电流指令控制器被配置为基于转矩参考指令来计算参考q轴电流。电流指令控制器被配置为基于参考q轴电流的大小来计算参考d轴电流。

6. 发明授权

US09054612B2 Motor control system to compensate for torque ripple 有权
公开(公告)号：US09054612B2
公开(公告)日：2015-06-09
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
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.

7. 发明申请

US20140265962A1 MOTOR CONTROL SYSTEM HAVING BANDWITH COMPENSATION 有权
标题翻译：具有带宽补偿的电机控制系统
公开(公告)号：US20140265962A1
公开(公告)日：2014-09-18
申请号：US13804873
申请日：2013-03-14
申请人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Niharika P. Popy
发明人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Niharika P. Popy
IPC分类号： H02P31/00
CPC分类号： H02P31/00 , B62D5/046 , H02P6/10 , H02P21/05 , H02P21/22 , H02P29/50
摘要： A motor control system for determining a ripple compensating current is provided. The motor control system includes a motor having a plurality of motor harmonics and a motor frequency, and a bandwidth compensation controller that is in communication with the motor. The bandwidth compensation controller is configured to determine a magnitude response compensation value and a phase compensation value for each of the plurality of motor harmonics. The magnitude response compensation value and the phase compensation value are both based on the motor frequency. The bandwidth compensation controller is configured to determine the ripple compensating current based on the magnitude response compensation value and the phase compensation value.
摘要翻译：提供了一种用于确定纹波补偿电流的电动机控制系统。电动机控制系统包括具有多个电动机谐波和电动机频率的电动机以及与电动机连通的带宽补偿控制器。带宽补偿控制器被配置为确定多个电动机谐波中的每一个的幅度响应补偿值和相位补偿值。幅度响应补偿值和相位补偿值均基于电机频率。带宽补偿控制器被配置为基于幅度响应补偿值和相位补偿值来确定纹波补偿电流。

8. 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。

9. 发明申请

US20140253004A1 METHOD AND SYSTEM TO COMPENSATE FOR DYNAMIC DC OFFSET OF MEASURED PHASE CURRENT 有权
标题翻译：补偿测量相电流的动态直流偏移的方法和系统
公开(公告)号：US20140253004A1
公开(公告)日：2014-09-11
申请号：US13785401
申请日：2013-03-05
申请人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian
发明人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian
IPC分类号： H02P6/10 , H02P6/12
CPC分类号： H02P6/10 , H02P21/06
摘要： A motor control system for determining an offset correction value is provided. The motor control system includes a motor, an inverter, an inverter controller, and a dynamic offset compensation control module. The inverter is configured to transmit the phase current to the motor. The inverter controller determines the phase current to the motor. The dynamic offset compensation control module is in communication with the inverter controller and the motor, and is configured to perform a method at a fixed periodic interval to determine the offset correction value.
摘要翻译：提供了一种用于确定偏移校正值的电动机控制系统。电动机控制系统包括电动机，逆变器，逆变器控制器和动态失调补偿控制模块。逆变器配置为将相电流传输到电机。变频器控制器确定电机的相电流。动态偏移补偿控制模块与逆变器控制器和电动机通信，并且被配置为以固定的周期性间隔执行方法以确定偏移校正值。

10. 发明申请

US20130261896A1 SYSTEM AND METHOD FOR CONTROLLING A MOTOR 有权
标题翻译：用于控制电机的系统和方法
公开(公告)号：US20130261896A1
公开(公告)日：2013-10-03
申请号：US13435995
申请日：2012-03-30
申请人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Niharika P. Popy
发明人： Abraham Gebregergis , Ramakrishnan RajaVenkitasubramony , Tomy Sebastian , Niharika P. Popy
IPC分类号： B62D6/00
CPC分类号： H02P6/08 , B60L15/025 , B62D5/046 , H02P6/17 , Y02T10/643 , Y02T10/7258
摘要： A method for controlling operation of a torque-assist motor includes determining a rotational position of the torque-assist motor and producing a motor speed signal that is indicative of a rotational speed of the motor. One or more gain factors are produced based on the rotational speed of the torque-assist motor. An electrical current applied to the torque-assist motor is detected, and a current error is calculated based on a commanded electrical current and the electrical current applied to the torque-assist motor. A quadrature axis voltage is calculated based on the current error and the one or more gain factors. An inverter is driven with a direct voltage signal that is phased with the rotational position of the torque-assist motor so as to produce the electrical current applied to the torque-assist motor. The electrical current exhibits a characteristic that is affected by the quadrature axis voltage.
摘要翻译：一种用于控制扭矩辅助马达的操作的方法包括确定扭矩辅助马达的旋转位置并产生指示马达的转速的马达速度信号。基于转矩辅助电动机的转速产生一个或多个增益因子。检测施加到转矩辅助电动机的电流，并且基于所指示的电流和施加到转矩辅助电动机的电流来计算电流误差。基于电流误差和一个或多个增益因子计算正交轴电压。逆变器由与转矩辅助电动机的转动位置相对准的直流电压信号驱动，以产生施加于转矩辅助电动机的电流。电流表现出受正交轴电压影响的特性。

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