公开(公告)号：US06789028B2

公开(公告)日：2004-09-07

申请号：US10245242

申请日：2002-09-18

申请人： Dan Michael Dragomir-Daescu ,  Gerald Burt Kliman ,  Harindra Rajiyah ,  Abdulrahman Abdallah Al-Khalidy

发明人： Dan Michael Dragomir-Daescu ,  Gerald Burt Kliman ,  Harindra Rajiyah ,  Abdulrahman Abdallah Al-Khalidy

IPC分类号： G01P354

CPC分类号： H02P23/14 ,  G01P3/48 ,  H02P21/16

摘要： A method comprises: sampling a current waveform of an induction machine to obtain sampled points; characterizing the sampled current over a selected first time window to obtain characterized points; subtracting the characterized points from respective sampled points to obtain a residual signal comprising residual points; obtaining a frequency spectrum representative of the residual signal over a selected second time window; and identifying a rotor bar pass frequency from the frequency spectrum. The method is typically carried out by a system comprising a computer, a computer-readable medium, or combinations thereof.

摘要翻译： 一种方法包括：对感应电机的电流波形进行采样以获得采样点; 在所选择的第一时间窗口表征采样电流以获得特征点; 从各采样点减去特征点，得到包含残留点的残差信号; 在所选择的第二时间窗口上获得表示残留信号的频谱; 并从频谱识别转子条通过频率。 该方法通常由包括计算机，计算机可读介质或其组合的系统来执行。

公开(公告)号：US06281674B1

公开(公告)日：2001-08-28

申请号：US09352462

申请日：1999-07-13

申请人： Chun-Mu Huang

发明人： Chun-Mu Huang

IPC分类号： G01P354

CPC分类号： B62J99/00 ,  B62J11/00 ,  B62J2099/0026 ,  B62J2099/0033 ,  G01C22/002 ,  G01P1/026 ,  G01P1/07

摘要： A trip meter includes a bracket secured to a member of a bicycle, a main body detachably secured to the bracket, a signal receiving circuit positioned in the main body for wirelessly receiving a pulse signal outputted from a transmitter, and a signal processing circuit electrically connected to the signal receiving circuit for counting a number and a frequency of the pulse signal and correspondingly generating an output signal indicative of the plurality of trip data. The trip meter further includes a display circuit electrically connected to the signal processing circuit for displaying the output signal generated from the signal processing circuit, a battery built in the main body for supplying a power to the signal receiving circuit, the signal processing circuit, and the display circuit, and a detector positioned in the main body for detecting a connective state of the main body and the bracket so that the signal receiving circuit is unable to wirelessly receive the pulse signal of the transmitter when the main body of the trip meter is detached from the bracket on the bicycle.

摘要翻译： 行程表包括固定到自行车的构件的支架，可拆卸地固定到支架的主体，位于主体中的用于无线地接收从发送器输出的脉冲信号的信号接收电路，以及电连接的信号处理电路 到信号接收电路，用于对脉冲信号的数量和频率进行计数，并相应地产生指示多个跳闸数据的输出信号。 行程表还包括电连接到信号处理电路的显示电路，用于显示从信号处理电路产生的输出信号，内置在主体中用于向信号接收电路供电的电池，信号处理电路和 显示电路和位于主体中的检测器，用于检测主体和支架的连接状态，使得当跳闸计的主体为跳闸计时的信号接收电路不能无线地接收发射机的脉冲信号 与自行车上的支架分离。

公开(公告)号：US06784659B2

公开(公告)日：2004-08-31

申请号：US10011543

申请日：2001-12-05

申请人： Michael J. Haji-Sheikh ,  Mark Plagens ,  Robert Kryzanowski

发明人： Michael J. Haji-Sheikh ,  Mark Plagens ,  Robert Kryzanowski

IPC分类号： G01P354

CPC分类号： G01D5/145 ,  G01D5/2451 ,  G01P3/487

摘要： The ring magnet speed and direction sensing scheme according to the present invention addresses many of the shortcomings of the prior art. In accordance with various aspects of the present invention, a pair of bridges placed on the same semiconductor chip are provided for sensing the passing of north/south transition points on a ring magnet. In accordance with an exemplary embodiment, the bridge contains a first group of runners that are perpendicular to a second group of runners. The bridges are placed to cause the signal from one bridge to slightly follow the signal from the other bridge. Placement of the bridges on the same chip enables highly accurate readings.

摘要翻译： 根据本发明的环形磁体速度和方向感测方案解决了现有技术的许多缺点。 根据本发明的各个方面，设置放置在同一半导体芯片上的一对桥，用于感测环形磁铁上的北/南过渡点的通过。 根据示例性实施例，桥梁包含垂直于第二组跑步者的第一组跑步者。 这些桥被放置成使来自一个桥的信号稍微跟随来自另一个桥的信号。 在同一个芯片上放置桥梁可以实现高精度读数。