公开(公告)号：US07085686B1

公开(公告)日：2006-08-01

申请号：US09262934

申请日：1999-03-05

申请人： Yu-To Chen ,  Sharon Shihua Liu ,  Vipin Kewal Ramani ,  Nicolas Wadih Chbat

发明人： Yu-To Chen ,  Sharon Shihua Liu ,  Vipin Kewal Ramani ,  Nicolas Wadih Chbat

IPC分类号： G06F15/00

CPC分类号： H03M7/30

摘要： A method and system for canceling noise and compressing data from a motor phase angle sensor. In this invention, phase angle data is sampled at a first sampling rate to generate a sampled phase angle. The sampled phase angle signal is sub-sampled at a second sampling rate to generate a sub-sampled phase angle signal which is transformed by subtracting each of the sub-sampled data points of the sub-sampled signal from 90 degrees to generate a transformed signal. The transformed phase angle signal is then convoluted with a wavelet signal to generate a convoluted phase angle signal. Next, a phase angle range signal is generated by calculating the range between the largest and smallest convoluted data points within each of a plurality of segments of the convoluted signal. A moving average calculation is performed on the phase angle range signal to generate a moving average signal.

摘要翻译： 一种抵消电机相位角传感器噪声和压缩数据的方法和系统。 在本发明中，以第一采样率对相位角数据进行采样以产生采样的相位角。 采样的相位角信号以第二采样率进行子采样，以产生子采样相位角信号，该信号通过从90度减去子采样信号的每个子采样数据点进行变换，以产生变换信号 。 然后将经变换的相位角信号与小波信号进行卷积以产生卷积相位角信号。 接下来，通过计算卷积信号的多个段内的最大和最小的卷积数据点之间的范围来生成相位角范围信号。 对相位角范围信号进行移动平均运算，生成移动平均信号。