Method and apparatus for controlling a high-speed AC permanent magnet synchronous motor coupled to an industrial turbo engine
    31.
    发明授权
    Method and apparatus for controlling a high-speed AC permanent magnet synchronous motor coupled to an industrial turbo engine 有权
    用于控制耦合到工业涡轮发动机的高速AC永磁同步电动机的方法和装置

    公开(公告)号:US06307275B1

    公开(公告)日:2001-10-23

    申请号:US09495443

    申请日:2000-01-31

    申请人: Bing Cheng

    发明人: Bing Cheng

    IPC分类号: B60L1102

    CPC分类号: H02P9/08 F02N11/08

    摘要: A method and apparatus for controlling a permanent magnet synchronous motor (8) coupled to a turbo engine such that transient current and steady state current are minimized. The method comprises the steps of, for a given DC bus voltage, determining an acceleration profile as a function of a voltage-offset value, a low-speed rated speed value, a high-speed rated speed value, a first desired speed for warming up the turbo engine, and a second desired speed where the turbo engine has sufficient torque to accelerate to its rated speed without the aid of the permanent magnet synchronous motor (8).

    摘要翻译: 一种用于控制耦合到涡轮发动机的永磁同步电动机(8)的方法和装置,使得瞬态电流和稳态电流最小化。 该方法包括以下步骤:对于给定的DC总线电压,确定作为电压偏移值的函数的加速度分布,低速额定速度值,高速额定速度值,用于变暖的第一期望速度 涡轮发动机和第二期望速度,其中涡轮发动机具有足够的扭矩以在没有永磁同步电动机(8)的帮助下加速到其额定转速。

    Deep-Hole Socket Driving Shank Assembly

    公开(公告)号:US20220395966A1

    公开(公告)日:2022-12-15

    申请号:US17347710

    申请日:2021-06-15

    IPC分类号: B25B13/48 B25B23/00 B25B23/12

    摘要: A driving shank assembly includes a tube, a drive head, a connector, and two quick release nuts. The tube has two enlarged portions each having a mounting recess and an external thread. Each of the enlarged portions has a plurality of slits and a plurality of elastic clamping pieces between the slits. The drive head has a driving recess and a mounting shaft. The mounting shaft of the drive head is inserted into the mounting recess of the tube. The connector has a mounting shaft and a connecting shank. The mounting shaft of the connector is inserted into the mounting recess of the tube. The connecting shank of the connector has a retaining groove for mounting an actuating tool. Each of the quick release nuts has an internal thread screwed onto the external thread of the tube.

    Tube Cutter with Lubricating Function

    公开(公告)号:US20210060674A1

    公开(公告)日:2021-03-04

    申请号:US16861310

    申请日:2020-04-29

    申请人: Bing-Cheng Liao

    发明人: Bing-Cheng Liao

    IPC分类号: B23D59/02 B23D45/16

    摘要: A tube cutter includes a main body, a holder slidably mounted on the main body, a guide bolt rotatably mounted on the main body to move the holder, two rollers pivotally mounted on the main body, a cutting wheel rotatably mounted on the holder and corresponding to the rollers, and two pivot shafts extending through the main body and the rollers. Each of the pivot shafts has a periphery provided with at least one oil storage groove, and each of the rollers is radially provided with an oil filling hole corresponding to the at least one oil storage groove of each of the pivot shafts. Thus, lubricating oil is filled between each of the rollers and each of the pivot shafts to provide a lubricating function.

    REMOVAL TOOL FOR SERVO HORN WITH SPLINE-SHAFT COUPLING
    34.
    发明申请
    REMOVAL TOOL FOR SERVO HORN WITH SPLINE-SHAFT COUPLING 有权
    伺服电机拆卸工具与线轴联轴器

    公开(公告)号:US20130276279A1

    公开(公告)日:2013-10-24

    申请号:US13452481

    申请日:2012-04-20

    申请人: Bing Cheng

    发明人: Bing Cheng

    IPC分类号: B25B27/14 B23P11/00

    摘要: A device to remove a metal servo horn in an efficient way by utilizing the lifting force to separate servo horn from a servo output shaft when screw is rotated counter-clockwise and hits against the concave of lower surface of upper front plate of the device. Clamping force provided by two fastening members combines the device and servo horn into one integrated unit to avoid the distortion of open end of the device when lifting force is greater than rigidity of the device. When a lifting force for removing the integrated unit is applied in direction opposite to installing direction of servo horn, it overcomes the friction between the inner splines of servo horn and the outer splines of servo output shaft then separates both splines. The removal of the servo horn from the servo output shaft is achieved.

    摘要翻译: 当螺钉逆时针旋转并撞击装置的上前板的下表面的凹面时,通过利用提升力将伺服喇叭与伺服输出轴分离,以有效的方式移除金属伺服喇叭的装置。 由两个紧固件提供的夹持力将装置和伺服喇叭组合成一个集成单元,以避免当提升力大于装置的刚度时装置的开口端的变形。 当用于拆卸集成单元的提升力沿与伺服喇叭的安装方向相反的方向施加时,它克服了伺服喇叭的内花键与伺服输出轴的外花键之间的摩擦力,然后分离了两个花键。 实现了从伺服输出轴上卸下伺服喇叭。

    TEST AUXILIARY DEVICE
    37.
    发明申请
    TEST AUXILIARY DEVICE 审中-公开
    测试辅助设备

    公开(公告)号:US20120247176A1

    公开(公告)日:2012-10-04

    申请号:US13165094

    申请日:2011-06-21

    摘要: A test auxiliary device for testing a portable data terminal having a plurality of sensors includes a base, a carrying unit, a driving unit, and a controlling unit. The carrying unit is disposed on the base and includes a carrying platform and a carrying base. The carrying platform and the carrying base form a first angle and a second angle with the base, respectively, and thereby together form a compound slope. The driving unit drives the carrying unit to move, allowing the carrying platform to move with acceleration and at an angular velocity. The controlling unit receives sensing values generated by the sensors, respectively. The test auxiliary device further includes a test matching unit for testing the sensors in operation. Accordingly, the test auxiliary device assists users in determining whether the sensors of the portable data terminal are functioning well.

    摘要翻译: 用于测试具有多个传感器的便携式数据终端的测试辅助设备包括基座,承载单元,驱动单元和控制单元。 承载单元设置在基座上并且包括承载平台和承载基座。 承载平台和承载基座分别与基座形成第一角度和第二角度,从而一起形成复合斜面。 驱动单元驱动承载单元移动,允许承载平台以加速度和角速度移动。 控制单元分别接收由传感器产生的感测值。 测试辅助装置还包括用于测试操作中的传感器的测试匹配单元。 因此,测试辅助设备协助用户确定便携式数据终端的传感器是否正常运行。

    Fire-resistant silicone polymer compositions
    38.
    发明申请
    Fire-resistant silicone polymer compositions 失效
    耐火有机硅聚合物组合物

    公开(公告)号:US20060155039A1

    公开(公告)日:2006-07-13

    申请号:US10523164

    申请日:2003-08-01

    IPC分类号: C08K3/34 B60C1/00

    摘要: A fire resistant composition comprising: a silicone polymer; mica in an amount of from 5% to 30% by weight based on the total weight of the composition; and a limited amount of glass additive sufficient to enable the formation of a self supporting ceramic material at temperatures above the decomposition temperature of the silicone polymer and below the fire rating temperature of the composition. The glass additive addition required to produce the self supporting ceramic material has been found to be preferably from 0.3% to 8% by weight based on the total weight of the composition. The composition is applicable to products formed for fire wall linings, fire partitions, screens, ceilings or linings, structural fire protection, fire door inserts, window or door seals, intumescent seals, in electrical switchboard cabinets or cables. In one cable application, the composition may be used as the extruded intermediate material (2) between the conductor (3) and extruded sheath (4).

    摘要翻译: 一种耐火组合物,其包含:硅氧烷聚合物; 相对于组合物的总重量,云母的量为5重量%至30重量% 以及有限量的玻璃添加剂,其足以在高于硅氧烷聚合物的分解温度并低于组合物的防火等级温度的温度下形成自支撑陶瓷材料。 已经发现生产自支撑陶瓷材料所需的玻璃添加剂添加量优选为基于组合物总重量的0.3重量%至8重量%。 该组合物适用于防火墙衬,防火隔墙,屏风,天花板或衬里,结构防火,防火门插件,窗户或门密封件,膨胀密封件,电气配电柜或电缆中形成的产品。 在一种电缆应用中,组合物可以用作导体(3)和挤出护套(4)之间的挤出中间材料(2)。

    Circuit configuration for permanent magnet synchronous motor control
    40.
    发明授权
    Circuit configuration for permanent magnet synchronous motor control 有权
    永磁同步电机控制电路配置

    公开(公告)号:US06894450B2

    公开(公告)日:2005-05-17

    申请号:US10346724

    申请日:2003-01-16

    CPC分类号: H02P6/06 H02P25/03

    摘要: Circuits and methods for use with an integrated circuit chip having internal back EMF estimation to control a permanent magnet synchronous motor includes an AC current feedback circuit, a scaling circuit, and a current regulator. Additionally, a speed regulator may be employed. In one embodiment, during operation at very low speed, the speed regulator is in an open loop control mode due to a back EMF detection limitation of the IC chip, and only the current regulator is active. A feedback current signal, together with a user-defined command current signal, serves the input of the current regulator, which controls the AC motor current and drives the motor speed from standstill. Once the motor speed reaches a certain level, the measured back EMF from the IC chip is sufficient to estimate the motor speed, which is compared with a user-defined command speed, and an error of the these two signals provides the input of a speed regulator.

    摘要翻译: 与具有用于控制永磁同步电动机的内部反电动势估计的集成电路芯片一起使用的电路和方法包括AC电流反馈电路,缩放电路和电流调节器。 另外,可以采用速度调节器。 在一个实施例中,在以非常低的速度操作期间,由于IC芯片的反电动势检测限制,速度调节器处于开环控制模式,并且仅电流调节器有效。 反馈电流信号连同用户定义的指令电流信号一起用于电流调节器的输入,电流调节器控制交流电动机电流并驱动电机速度停止。 一旦电机速度达到一定水平,来自IC芯片的测量的反电动势足以估计电机速度,这与用户定义的指令速度进行比较,并且这两个信号的误差提供了速度的输入 调节器