公开(公告)号：US20050283918A1

公开(公告)日：2005-12-29

申请号：US10874465

申请日：2004-06-23

Applicant: Zheng Zhang ,  Huangsheng Xu ,  Daniel Conrad ,  Scott Slabbekoorn

Inventor： Zheng Zhang ,  Huangsheng Xu ,  Daniel Conrad ,  Scott Slabbekoorn

IPC: D06B3/00 ,  D06F33/00 ,  D06F37/20 ,  D06F37/22

CPC classification number: D06F37/22 ,  D06F37/203

Abstract: A method of determining an imbalance condition in a horizontal axis washing machine is disclosed. The method comprises several steps, including establishing a speed profile for the washing machine, having at least three increasing speed steps, operating a motor to rotate the washing machine drum sequentially through the three speed steps, measuring the power output of the motor at each speed step, calculating an average power output by averaging the power output at the first and second speed steps, calculating the difference between the power output at the third step and the average power output, comparing the difference to a predetermined threshold difference value, and sending a signal indicative of an imbalance condition if the difference exceeds the threshold difference value.

Abstract translation: 公开了一种确定卧式洗衣机不平衡状况的方法。 该方法包括几个步骤，包括建立洗衣机的速度曲线，具有至少三个增加速度的步骤，操作电动机以顺序地通过三个速度步骤旋转洗衣机滚筒，在每个速度下测量电动机的功率输出 通过对在第一和第二速度步骤中的功率输出进行平均来计算平均功率输出，计算第三步骤的功率输出与平均功率输出之间的差异，将该差值与预定阈值差值进行比较，并发送 如果差值超过阈值差值，则指示不平衡状态的信号。

公开(公告)号：US06426605B1

公开(公告)日：2002-07-30

申请号：US09617393

申请日：2000-07-17

Applicant: Hamid A. Toliyat ,  Ruhe Shi ,  Huangsheng Xu

Inventor： Hamid A. Toliyat ,  Ruhe Shi ,  Huangsheng Xu

IPC: H02P541

CPC classification number: H02P27/06

Abstract: A multiphase induction motor system is disclosed. The system comprises a motor having at least five phases and comprising a stator and a rotor. For each phase, the motor receives a command current to power the motor, where the command current has a fundamental frequency. A processor determines, for each phase, at least one harmonic component of a signal indicative of the fundamental frequency, generates a command current from the harmonic component and the fundamental frequency, and supplies the command current to the stator. A method for operating a multiphase induction motor system is disclosed. A first command current is supplied to a motor having at least five phases, where the first command current powers the motor. The first command current has a fundamental frequency, and the motor comprises a stator and a rotor. For each phase, at least one harmonic component of a signal indicative of the fundamental frequency is determined. A second command current is generated from the harmonic component and the fundamental frequency. The second command current is supplied to the stator.

Abstract translation: 公开了一种多相感应电动机系统。 该系统包括具有至少五相的电动机，并且包括定子和转子。 对于每相，电机接收指令电流以为电机供电，其中指令电流具有基频。 处理器为每个相位确定指示基频的信号的至少一个谐波分量，从谐波分量和基频产生指令电流，并将指令电流提供给定子。 公开了一种操作多相感应电动机系统的方法。 向具有至少五相的电动机提供第一指令电流，其中第一指令电流对电动机供电。 第一指令电流具有基频，并且电动机包括定子和转子。 对于每个相位，确定指示基频的信号的至少一个谐波分量。 从谐波分量和基频产生第二指令电流。 第二个指令电流被提供给定子。

公开(公告)号：US07296445B2

公开(公告)日：2007-11-20

申请号：US10874465

申请日：2004-06-23

Applicant: Zheng Zhang ,  Huangsheng Xu ,  Daniel C. Conrad ,  Scott D. Slabbekoorn

Inventor： Zheng Zhang ,  Huangsheng Xu ,  Daniel C. Conrad ,  Scott D. Slabbekoorn

IPC: D06F33/00

CPC classification number: D06F37/22 ,  D06F37/203

Abstract: A method of determining an imbalance condition in a horizontal axis washing machine comprises several steps, including establishing a speed profile for the washing machine, having at least three increasing speed steps, operating a motor to rotate the washing machine drum sequentially through the three speed steps, measuring the power output of the motor at each speed step, calculating an average power output by averaging the power output at the first and second speed steps, calculating the difference between the power output at the third step and the average power output, comparing the difference to a predetermined threshold difference value, and sending a signal indicative of an imbalance condition if the difference exceeds the threshold difference value.

Abstract translation: 一种确定水平轴洗衣机不平衡状况的方法包括几个步骤，包括建立洗衣机的速度分布，具有至少三个增加速度的步骤，操作电动机以使洗衣机滚筒依次通过三个速度步骤 在每个速度步骤中测量电动机的功率输出，通过对在第一和第二速度步骤中的功率输出进行平均来计算平均功率输出，计算第三步骤的功率输出与平均功率输出之间的差值， 差异到预定阈值差值，并且如果差超过阈值差值，则发送指示不平衡条件的信号。

公开(公告)号：US07216049B2

公开(公告)日：2007-05-08

申请号：US10874529

申请日：2004-06-23

Applicant: Zheng Zhang ,  Huangsheng Xu

Inventor： Zheng Zhang ,  Huangsheng Xu

IPC: G01R35/00

CPC classification number: G01R35/00 ,  D06F37/203

Abstract: One embodiment is a method of calibrating current offsets from a direct current bus current circuit adapted to control a motor including the steps of initializing the direct current bus current circuit, disengaging pulse width modulated signals to the motor, sampling current values at a predetermined sampling rate, averaging the current values over a predetermined number of samples to establish an offset value, and calculating a calibration value that will nullify the offset value in any subsequent processing of current samples. Another embodiment, a method of filtering inaccurate data from a sequential calculation of power values based on repeatedly sampled voltage and current including the steps of establishing a moving window of a predetermined number of power values, calculating an average power over a sequence comprising the predetermined number of power values, calculating an error value for each time, and comparing each error value to a preset value.

Abstract translation: 一个实施例是一种校准来自适于控制电动机的直流总线电流电路的电流偏移的方法，包括以下步骤：初始化直流总线电流电路，将脉冲宽度调制信号与电动机分离，以预定采样率采样电流值 对预定数量的样本的当前值进行平均以建立偏移值，以及计算在当前采样的任何后续处理中将使该偏移值无效的校准值。 另一个实施例是一种从基于重复采样的电压和电流的功率值的顺序计算中过滤不准确数据的方法，包括建立预定数量功率值的移动窗口的步骤，计算包括预定数量的序列的平均功率 的功率值，计算每次的误差值，并将每个误差值与预设值进行比较。

公开(公告)号：US20050288885A1

公开(公告)日：2005-12-29

申请号：US10874529

申请日：2004-06-23

Applicant: Zheng Zhang ,  Huangsheng Xu

Inventor： Zheng Zhang ,  Huangsheng Xu

IPC: D06F37/20 ,  G01R35/00 ,  G06F19/00

CPC classification number: G01R35/00 ,  D06F37/203

Abstract: A method of calibrating current offsets from a DC bus current circuit adapted to control a motor is disclosed. The method comprises the steps of initializing the DC bus current circuit, disengaging PWM signals to the motor, sampling current values at a predetermined sampling rate, averaging the current values over a predetermined number of samples to establish an offset value, and calculating a calibration value that will nullify the offset value in any subsequent processing of current samples. In a related aspect, a method of filtering inaccurate data from a sequential calculation of power values based on repeatedly sampled voltage and current obtained at a predetermined sampling rate is disclosed. The method includes the steps of establishing a moving window of a predetermined number of power values that moves to include the power value based on the last sample of voltage and current, calculating an average power over a sequence comprising the predetermined number of power values at three different times within the window, calculating an error value for each time, based on the difference between two of the average power values, and comparing each error value to a preset value. In this manner, when the error value exceeds the preset value, the power value based on the last sample is discarded.

Abstract translation: 公开了一种校准来自适于控制电动机的DC总线电流电路的电流偏移的方法。 该方法包括以下步骤：初始化DC总线电流电路，将PWM信号与电动机分离，以预定采样率对电流值进行采样，对预定数量的采样值的当前值进行平均以建立偏移值，以及计算校准值 这将使当前样本的任何后续处理中的偏移值无效。 在相关方面，公开了一种基于以预定采样率获得的重复采样的电压和电流来对功率值的顺序计算来滤波不准确数据的方法。 该方法包括以下步骤：建立预定数量的功率值的移动窗口，该移动窗口根据电压和电流的最后一个样本移动以包括功率值，计算包括预定数量的功率值的序列的平均功率， 基于两个平均功率值之间的差异，并将每个误差值与预设值进行比较，计算窗口内的不同时间，计算每次的误差值。 以这种方式，当误差值超过预设值时，基于最后一个样本的功率值被丢弃。