Vehicle window antenna with antenna elements on two surfaces
    61.
    发明授权
    Vehicle window antenna with antenna elements on two surfaces 失效
    车窗天线,天线元件位于两个表面

    公开(公告)号:US5017933A

    公开(公告)日:1991-05-21

    申请号:US327062

    申请日:1989-03-22

    IPC分类号: B60S1/04 H01Q1/12 H01Q1/32

    CPC分类号: H01Q1/1271

    摘要: The disclosure is directed to a vehicle window equipped with a radio antenna as well as a heating defroster. A laminated window glass is employed advantageously which comprises inner and outer plates of glass facing respectively the interior and exterior of the vehicle. The heating structure is mounted on a first surface of the laminated glass. At least part of the antenna elements is formed on a second surface which is different from the first surface supporting the heater elements. The antenna bearing surface and/or heater bearing surface may be any surface of the laminated glass; the outer surface of the outer glass plate should be excluded from the supporting surface, however, because such surface is exposed to the exterior of the vehicle. Therefore, a relatively large area is always available for the antenna structure irrespective of the size of the window. It becomes more flexible and easier to make the design of antenna having the desired characteristics.

    摘要翻译: 本公开涉及配备有无线电天线以及加热除霜器的车辆窗口。 有利地采用层压窗玻璃,其包括分别面对车辆内部和外部的玻璃的内板和外板。 加热结构安装在夹层玻璃的第一表面上。 天线元件的至少一部分形成在与支撑加热器元件的第一表面不同的第二表面上。 天线支承表面和/或加热器支承表面可以是夹层玻璃的任何表面; 外部玻璃板的外表面应该从支撑表面排除,然而由于这种表面暴露于车辆的外部。 因此,无论窗口的大小如何,天线结构总是可以使用相对较大的面积。 使具有所需特性的天线的设计变得更加灵活和容易。

    Three-phase induction motor
    62.
    发明授权
    Three-phase induction motor 失效
    三相感应电机

    公开(公告)号:US4868438A

    公开(公告)日:1989-09-19

    申请号:US31526

    申请日:1987-03-27

    IPC分类号: H02K17/12 H02K1/26 H02K17/16

    摘要: A three-phase induction motor is subjected to countermeasure for the rotor and the stator in order to remove two harmonic components of the orders causing a torque ripple, among a plurality of harmonic components included in a magnetic flux generated in an air gap between a stator core and a rotor core. In the three-phase induction motor, conductor grooves of the rotor core are skewed by an electrical angle of 2.pi./n where n is the order of one of the harmonic components to be removed. In the stator, the number of slots (N) is selected so that an equation N=l.times.m.times.q is satisfied, where l=the number of poles, m=the number of phase, and q is a non integer number representing the number of slots per pole per phase, and the stator winding pitch is determined according to the order of another harmonic component to be removed.

    摘要翻译: 三相感应电动机对转子和定子进行对策,以便在定子中产生的磁通中产生的磁通中包含的多个谐波分量中除去导致转矩脉动的次数的两个谐波分量 芯和转子芯。 在三相感应电动机中,转子铁芯的导体槽倾斜2 pi / n的电角,其中n是要去除的谐波分量之一。 在定子中,选择时隙数(N),使得满足等式N = 1×m×q,其中l =极数,m =相位数,q是表示时隙数量的非整数 每相的每极,并且定子绕组间距根据要去除的另一个谐波分量的顺序来确定。

    Three-phase induction motor
    63.
    发明授权
    Three-phase induction motor 失效
    三相感应电机

    公开(公告)号:US4755702A

    公开(公告)日:1988-07-05

    申请号:US588

    申请日:1987-01-06

    IPC分类号: H02K3/28 H02K17/12 H02K17/00

    CPC分类号: H02K3/28

    摘要: A three-phase induction motor includes winding slots and a stator winding. The number of winding slots per pole per phase is a noninteger. The stator winding is a three-phase balanced winding. A pitch s of the winding satisfies s=(r-t)/r or s=r/(r+t) (where t is an odd number and r is the order of a harmonic wave to be suppressed).

    摘要翻译: 三相感应电动机包括绕组槽和定子绕组。 每相每极的绕组槽数是非整数。 定子绕组是三相平衡绕组。 绕组的间距s满足s =(r-t)/ r或s = r /(r + t)(其中t是奇数,r是要抑制的谐波的阶数)。