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    • 12. 发明申请
    • SYSTEM FOR CONTROLLING A MOTOR
    • 控制电机的系统
    • WO2012118649A1
    • 2012-09-07
    • PCT/US2012/025999
    • 2012-02-22
    • DEERE & COMPANYWU, LongSHAW, Robert
    • WU, LongSHAW, Robert
    • H02P21/00H02P23/00
    • H02P21/06H02P21/0003H02P21/02H02P29/662
    • A control system (120) for a motor (117) includes a current regulation controller (111) for generating a terminal voltage command. The terminal voltage command is used for converting a supply voltage to a three phase voltage to power a motor (117). The control system (120) also includes a terminal voltage command feedback module (108) for controlling the terminal voltage command. The terminal voltage command feedback module (108) compares the terminal voltage command to a determined voltage limit of the supply voltage and generates a d-axis current adjustment command in accordance with the comparison. The d-axis current adjustment command is used for reducing the terminal voltage command below the determined voltage limit. The control system (120) also includes a summer (119) coupled with the terminal voltage command feedback module (108). The summer (119) adds the d-axis current adjustment command to a d-axis current command received from a lookup table (e.g., 109).
    • 用于电动机(117)的控制系统(120)包括用于产生端子电压指令的电流调节控制器(111)。 端子电压指令用于将电源电压转换为三相电压以对电动机(117)供电。 控制系统(120)还包括用于控制终端电压指令的终端电压指令反馈模块(108)。 端子电压指令反馈模块(108)将端子电压指令与电源电压的确定电压极限进行比较,并根据比较产生d轴电流调节指令。 d轴电流调节指令用于将端子电压指令降低到低于确定的电压极限。 控制系统(120)还包括与终端电压指令反馈模块(108)耦合的加法器(119)。 夏季(119)将d轴电流调节命令添加到从查找表(例如,109)接收的d轴电流指令。
    • 13. 发明申请
    • METHOD AND SYSTEM FOR DETERMINING A POSITION OF A ROTOR OF AN ELECTRIC MOTOR WITH NOISE REDUCTION
    • 用于确定具有噪声减少的电动机的转子的位置的方法和系统
    • WO2012115918A2
    • 2012-08-30
    • PCT/US2012/025846
    • 2012-02-21
    • DEERE & COMPANYWU, LongSHAW, Robert
    • WU, LongSHAW, Robert
    • H02P6/16
    • H02P21/145H02P6/20H02P21/16
    • A data storage device stores previous position readings of the rotor for a previous cycle of a pulse width modulation signal applied to the motor (S300). A current raw position reading for the current cycle is received (S302). A predicted position reading for a current cycle is determined based on at least one of the stored previous position readings of the previous cycle (S304). A data processor determines whether a difference between the current raw position reading and the predicted position reading for a first mode and a second mode is within one or more preset thresholds (S306, S307). The data processor selects the current raw position reading as a verified reliable final position reading if a first difference for the first mode is equal to or less than a primary preset threshold or if a second difference for the second mode is equal to or less than a secondary preset threshold (S308).
    • 数据存储装置存储施加到电动机的脉宽调制信号的前一周期的转子的先前位置读数(S300)。 接收当前周期的当前原始位置读取(S302)。 基于先前循环的所存储的先前位置读数中的至少一个确定当前周期的预测位置读数(S304)。 数据处理器确定当前原始位置读取与第一模式和第二模式的预测位置读取之间的差是否在一个或多个预设阈值内(S306,S307)。 如果第一模式的第一差等于或小于主预设阈值,或者如果第二模式的第二差等于或小于第一模式,则数据处理器将当前原始位置读取选择为经验证的可靠最终位置读数 辅助预设阈值(S308)。
    • 14. 发明申请
    • METHOD AND SYSTEM FOR EVALUATING ELECTRICAL CONNECTIONS BETWEEN A MOTOR CONTROLLER AND MOTOR
    • 用于评估电机控制器和电机之间的电气连接的方法和系统
    • WO2012115917A2
    • 2012-08-30
    • PCT/US2012/025845
    • 2012-02-21
    • DEERE & COMPANYWU, LongSHAW, RobertGILMAN, Alan, K.
    • WU, LongSHAW, RobertGILMAN, Alan, K.
    • H02P1/22
    • G01R31/04G01R31/343G01R31/42H02P21/22H02P29/0241
    • A pair of direct d-q-axis voltage commands is associated with a monotonically varying test sequence of test rotor angular positions (S300) to determine a correct rotational direction of a rotor of the motor in response to application of the pair of direct d-q-axis voltage commands to the motor. The rotor of the motor rotates (e.g., self spins in a diagnostic mode) in response to the applied direct d-q-axis voltage commands and applied monotonically varying test sequence of test rotor angular positions (S304). The primary positioning module or data processor determines that conductor connections between the inverter (e.g., motor controller) and the motor are correct if the calculated shaft speed sign is positive with respect to an applied monotonically varying test sequence of rotor angular positions that monotonically increases (S306).
    • 一对直接dq轴电压指令与测试转子角位置的单调变化测试序列(S300)相关联,以响应于一对直接dq轴电压来确定电动机转子的正确旋转方向 命令到电机。 响应于所施加的直接d-q轴电压命令和应用的单调变化的测试转子角位置的测试序列,电机的转子旋转(例如,以诊断模式自身旋转)(S304)。 如果计算的轴速度符号相对于单调增加的转子角位置的应用单调变化的测试序列是正的,则主要定位模块或数据处理器确定逆变器(例如,电动机控制器)和电动机之间的导体连接是正确的( S306)。
    • 16. 发明申请
    • METHOD AND SYSTEM FOR CONTROLLING AN ELECTRIC MOTOR AT OR NEAR STALL CONDITIONS
    • 方法和系统,用于控制电动汽车在或在附近的条件下
    • WO2012118646A1
    • 2012-09-07
    • PCT/US2012/025992
    • 2012-02-22
    • DEERE & COMPANYWU, LongSHAW, Robert
    • WU, LongSHAW, Robert
    • B60K1/00
    • H02P21/04B60L15/2045B60L2240/421B60L2240/423B60L2240/425B60L2240/529H02P29/50Y02T10/643Y02T10/645Y02T10/72Y02T10/7283
    • A data processor determines whether a composite torque command Is larger than a preset torque threshold for a time Interval |S302). The composite torque command is convertible into a direct-axis current command and a quadrature-axis current command (S302). The data processor determines whether a rotor speed of the motor is less than a preset speed threshold for the lime interval (S3Q4), The data processor, the current adjustment module, or the current shaping module adjusts the direct-axis current command and the quadrature-axis current command to obtain a revised direct-axis current command and revised quadrature-axis current command for the time interval if the composite torque command Is larger than the preset torque threshold and If the rotor speed is less than the preset speed threshold (S308){ where the revised current commands vary by the detected rotational position of the rotor to achieve a generally constant shaft torque output.
    • 数据处理器在时间间隔| S302)中确定复合转矩指令是否大于预设转矩阈值。 复合转矩指令可转换为直轴电流指令和正交轴电流指令(S302)。 数据处理器确定电机的转子速度是否小于石灰间隔的预设速度阈值(S3Q4)。数据处理器,当前调整模块或当前整形模块调整直轴电流指令和正交 -axis电流命令,如果复合转矩指令大于预设转矩阈值,则获得修正的直轴电流指令和修正的正交轴电流指令,如果转子速度小于预设速度阈值(S308 ){其中修正的电流指令根据检测到的转子的旋转位置而变化,以实现大致恒定的轴转矩输出。
    • 19. 发明申请
    • METHOD AND SYSTEM FOR CALIBRATING ROTOR POSITION OFFSET OF AN ELECTRIC MOTOR
    • 用于校准电动机的转子位置偏移的方法和系统
    • WO2012118579A1
    • 2012-09-07
    • PCT/US2012/022829
    • 2012-01-27
    • DEERE & COMPANYWU, LongSHAW, Robert
    • WU, LongSHAW, Robert
    • H02K13/00
    • H02P6/20H02P21/16H02P21/32H02P21/34
    • While enforcing a fake position in the data processing system (120) and applying a zero direct-axis current command, positive and negative quadrature-axis current commands are applied sequentially and at approximately same magnitude to urge the rotor toward an enforced position. A processing module (116) measures a positive quadrature-axis current aligned raw position data after application of the positive quadrature-axis current command and measures negative quadrature-axis current aligned raw position data for the rotor after application of the negative quadrature-axis command. An initial position offset calibrator (151) or data processor determines a difference between the raw position data to determine an alignment of a true averaging axis. An initial position offset calibrator (151) or data processor determines a raw averaging axis position data based on an average of the raw position data.
    • 当在数据处理系统(120)中执行假位置并应用零直轴电流指令时,顺时针和大致相同的幅度施加正和负的正交轴电流指令以将转子推向强制位置。 处理模块(116)在施加正正交轴电流指令之后测量正正交轴电流对准原始位置数据,并且在施加负正交轴命令之后测量转子的负正交轴电流对准原始位置数据 。 初始位置偏移校准器(151)或数据处理器确定原始位置数据之间的差以确定真实平均轴的对准。 初始位置偏移校准器(151)或数据处理器基于原始位置数据的平均值来确定原始平均轴位置数据。
    • 20. 发明申请
    • METHOD AND SYSTEM FOR CONTROLLING AN ELECTRICAL MOTOR WITH TEMPERATURE COMPENSATION
    • 用于控制具有温度补偿的电动机的方法和系统
    • WO2012115897A2
    • 2012-08-30
    • PCT/US2012/025796
    • 2012-02-20
    • DEERE & COMPANYWU, LongSHAW, Robert
    • WU, LongSHAW, Robert
    • H02P7/285
    • H02P7/285H02P21/141H02P29/662
    • A temperature estimation module {104} estimates a change in temperature of the magnets associated with the rotor of the motor (117) based on an operational magnetic flux strength that is compared to a reference magnetic flux strength determined at a known- ambient temperature and for a predetermined operating range of the motor. The temperature estimation module (104) or the system (120) establishes a relationship between the estimated change in the temperature and a magnetic torque component of a target output torque of the motor (117) consistent with the predetermined operating range. The current adjustment module (107) or the system (120) adjusts a command (e.g., quadrature-axis current command) for the motor (117) to compensate for shaft torque variation associated with the estimated change in the temperature In conformance with the established relationship.
    • 温度估计模块{104}基于与在已知环境温度下确定的参考磁通强度相比较的操作磁通强度来估计与电动机(117)的转子相关联的磁体的温度变化,并且对于 电机的预定工作范围。 温度估计模块(104)或系统(120)建立与预定工作范围一致的所估计的温度变化和电动机(117)的目标输出转矩的磁转矩分量之间的关系。 电流调节模块(107)或系统(120)调整电动机(117)的指令(例如,正交轴电流指令),以补偿与估计的温度变化相关的轴转矩变化。 关系。