Modeling of Hydrocarbon Reservoirs Containing Subsurface Features
    81.
    发明申请
    Modeling of Hydrocarbon Reservoirs Containing Subsurface Features 有权
    含地下特征的油气藏建模

    公开(公告)号:US20090248374A1

    公开(公告)日:2009-10-01

    申请号:US12367325

    申请日:2009-02-06

    IPC分类号: G06F17/10 G06G7/48

    摘要: A method for modeling a reservoir response in a subsurface system is provided. The subsurface system has at least one subsurface feature. Preferably, the subsurface system comprises a hydrocarbon reservoir. The method includes defining physical boundaries for the subsurface system, and locating the at least one subsurface feature within the physical boundaries. The method also includes creating a finite element mesh within the physical boundaries. The finite element mesh may have elements that cross the at least one subsurface feature such that the subsurface feature intersects elements in the mesh. A computer-based numerical simulation is then performed wherein the effects of the subsurface feature are recognized in the response. The reservoir response may be, for example, pore pressure or displacement at a given location within the physical boundaries.

    摘要翻译: 提供了一种用于对地下系统中的储层响应进行建模的方法。 地下系统具有至少一个地下特征。 优选地,地下系统包括烃储层。 该方法包括定义地下系统的物理边界,以及将物理边界内的至少一个地下特征定位。 该方法还包括在物理边界内创建有限元网格。 有限元网格可以具有穿过至少一个地下特征的元素,使得地下特征与网格中的元素相交。 然后执行基于计算机的数值模拟,其中在响应中识别地下特征的影响。 储层响应可以是例如在物理边界内的给定位置处的孔隙压力或位移。

    OPTICAL BIOPSY METHOD FOR PRECANCEROUS LESION DIAGNOSIS AND AN ENDOSCOPE APPARATUS THEREOF
    82.
    发明申请
    OPTICAL BIOPSY METHOD FOR PRECANCEROUS LESION DIAGNOSIS AND AN ENDOSCOPE APPARATUS THEREOF 审中-公开
    用于前列腺切除术的光学生物学方法及其内窥镜装置

    公开(公告)号:US20080161699A1

    公开(公告)日:2008-07-03

    申请号:US11935155

    申请日:2007-11-05

    IPC分类号: A61B1/06 A61B6/00

    CPC分类号: A61B5/0084 A61B5/0071

    摘要: A optical Biopsy method and an apparatus are used in the diagnosis of precancerous lesion for locating the place and determining the level of malignant tumor. The apparatus comprises light source (1, 10) a light channel system, an endoscope (21) and a circuit system. The light sources include an excited light (1) and a cold light source (10). The cold light source and the excited light in the light channel system go through the end of the light guide of the endoscope via optical fiber bundle and irradiate the tested living tissue (22). The white light image signal and the intrinsic fluorescence image signal reflected from the tested living tissue (22) are received by a weak fluorescence CCD (6) that tightly connects to the end of the endoscope (21) and then transmit to the circuit system via a signal wire (9) to produce the image in the display (17). The weak fluorescence signal reflected from the tested living tissue (22) is transmitted to the circuit system via the weak fluorescence fiber bundle (4) protruding from the forceps hole of the endoscope to produce the spectrum image (16).

    摘要翻译: 光学活检方法和装置用于诊断癌前病变以确定位置并确定恶性肿瘤的水平。 该装置包括光源(1,10),光通道系统,内窥镜(21)和电路系统。 光源包括激发光(1)和冷光源(10)。 光通道系统中的冷光源和激发光经由光纤束穿过内窥镜的光导的端部并照射测试的活体组织(22)。 从被测活体组织(22)反射的白光图像信号和固有荧光图像信号被紧密连接到内窥镜(21)的端部的弱荧光CCD(6)接收,然后通过 用于在显示器(17)中产生图像的信号线(9)。 从被检测的活体组织(22)反射的弱荧光信号通过从内窥镜的镊子孔突出的弱荧光纤维束(4)传输到电路系统,产生光谱图像(16)。

    Aircraft AC-DC converter
    83.
    发明申请
    Aircraft AC-DC converter 有权
    飞机AC-DC转换器

    公开(公告)号:US20050169025A1

    公开(公告)日:2005-08-04

    申请号:US10770532

    申请日:2004-02-04

    IPC分类号: H02M7/155 H02M7/217

    CPC分类号: H02M7/2176

    摘要: An AC-DC converter includes a DC reference voltage generation unit that creates a DC reference voltage waveform based in part on a feedback signal. The AC-DC converter also includes an SCR firing unit that receives a variable frequency power output from the generator and that provides firing signals. The AC-DC converter further includes SCRs arranged as a positive bank of SCRs and a negative bank of SCRs. The AC-DC converter further includes a modulator unit that receives the firing signals and the DC reference voltage waveform, and that respectively outputs SCR gate signals to the SCRs. The AC-DC converter also includes a filter unit provided between the positive and negative banks of SCRs. The AC-DC converter also includes a voltage feedback path for feeding back the DC output voltage as the feedback voltage waveform.

    摘要翻译: AC-DC转换器包括DC参考电压产生单元,其部分地基于反馈信号产生DC参考电压波形。 AC-DC转换器还包括SCR发射单元,其接收从发生器输出的可变频率功率并提供发射信号。 AC-DC转换器还包括被布置为SCR的正极组和SCR的负极组的SCR。 AC-DC转换器还包括调制器单元,其接收点火信号和DC参考电压波形,并分别向SCR输出SCR门信号。 AC-DC转换器还包括设置在SCR的正负极组之间的滤波器单元。 AC-DC转换器还包括用于反馈DC输出电压作为反馈电压波形的电压反馈路径。

    Brushless DC motor controller with speed control from zero to above
based speed
    84.
    发明授权
    Brushless DC motor controller with speed control from zero to above based speed 失效
    无刷直流电机控制器,速度控制从零到高于基准速度

    公开(公告)号:US06137251A

    公开(公告)日:2000-10-24

    申请号:US185080

    申请日:1998-11-03

    IPC分类号: H02P6/08 H02P6/16 H02P7/50

    CPC分类号: H02P6/085 H02P6/16

    摘要: A permanent magnet brushless DC motor controller, and method of operation of the controller, provide effective and smooth regulation of the speed of the motor from zero to above base speed (e.g. at least about 100% above base speed). For a three phase motor the controller comprises three Hall sensors, a power amplifier comprising a plurality of power electronic switch connected to the motor, two switches (bottom and top) for each phase, and at least an eight bit microprocessor connected to and controlling the switches, and a frequency to voltage controller. The Hall sensors are connected substantially directly to the microprocessor, and also through the frequency to voltage converter. In response to sensing by the Hall sensors, both directly and through the frequency to voltage converter, the microprocessor is used to control the electronic switches to smoothly speed regulate the motor both below and above base speed. Below base speed the microprocessor utilizes a commutation truth table, and the bottom switches provide pulse width modulation, whereas equal to and above base speed the microprocessor uses first and second jump tables, the first jump table comprising the commutation truth table forward rotated one step, and the second jump table the commutation truth table forward rotated two steps.

    摘要翻译: 永磁无刷直流电动机控制器和控制器的操作方法能够将电动机的速度从零到高于基准速度(例如高于基本速度至少大约100%)有效和平稳地调节。 对于三相电动机,控制器包括三个霍尔传感器,功率放大器包括连接到电动机的多个电力电子开关,用于每个相的两个开关(底部和顶部)以及连接到并控制该电动机的至少八位微处理器 开关和频率对电压控制器。 霍尔传感器基本上直接连接到微处理器,也通过频率到电压转换器连接。 响应于霍尔传感器直接和通过频率到电压转换器的感测,微处理器用于控制电子开关以平滑地速度调节低于和高于基本速度的电机。 低于基本速度,微处理器利用换向真值表,并且底部开关提供脉冲宽度调制,而等于和高于基本速度的微处理器使用第一和第二跳转表,第一跳转表包括正向旋转一步的换向真值表, 并且第二跳表将换向真值表向前旋转两步。

    Transversal-flux permanent magnet motor
    85.
    发明授权
    Transversal-flux permanent magnet motor 失效
    横向磁通永磁电动机

    公开(公告)号:US5677580A

    公开(公告)日:1997-10-14

    申请号:US148516

    申请日:1993-11-08

    申请人: Hao Huang

    发明人: Hao Huang

    摘要: A brushless transversal-flux permanent magnet motor has a stator construction that forms a virtual bobbin, so that windings may be simply circumferentially wrapped around the stator, eliminating the need for winding insertion. The stator may be constructed of first and second core structures each having an elongated powdered iron pole piece central portion with end terminations, and integral with a tubular element also of powdered iron. Epoxy, or like non-magnetic material, fills in the volume between the pole piece end terminations to form a disc-shaped structure, the windings wrapping around the tubular elements. A discontinuity is provided on each pole piece and termination to allow start-up. The rotor may be a yoke having permanent magnet rings aligned with the pole pieces, and mounted for rotation by a shaft central of the tubular elements engaging bearings in the tubular elements. A circuit board containing motor control circuitry (for switching connection of the windings to a source of electrical power) can be connected to the stator to mechanically mount it while facilitating connection of the windings to the circuitry.

    摘要翻译: 无刷横向磁通永磁电动机具有形成虚拟线轴的定子结构,使得绕组可以简单地周向缠绕在定子上,从而不需要卷绕插入。 定子可以由第一和第二芯结构构成,每个芯结构具有带端端的细长铁粉末中心部分,并且还与铁粉的管状元件成一体。 环氧树脂或类似非磁性材料填充极片端部端子之间的体积以形成圆盘状结构,绕组围绕管状元件缠绕。 在每个极片和终端上提供不连续以允许启动。 转子可以是具有与极片对准的永磁体环的轭,并且安装成通过与管状元件中的轴承接合的管状元件的中心的轴旋转。 包含电动机控制电路(用于将绕组连接到电力源的开关)的电路板可以连接到定子以机械地安装它,同时有助于绕组连接到电路。

    Virtual hall-effect signal generating for a brushless sensorless
electrical rotary machine

    公开(公告)号:US5532561A

    公开(公告)日:1996-07-02

    申请号:US456076

    申请日:1995-05-31

    申请人: Hao Huang

    发明人: Hao Huang

    IPC分类号: H02P6/18

    CPC分类号: H02P6/185

    摘要: Electronic solid state circuitry is provided which takes the place of Hall-effect sensors in brushless DC motors, providing output signals substantially the same as those of Hall-effect sensors. The Hall-effect sensors in existing motors may be deactivated or removed and functionally replaced by the solid state circuit. The circuit may include a number of D flip flops and a NAND gate connected to a voltage controlled oscillator by a switch which is part of a start up circuit. A direction reverse circuit, a sampling logic circuit (to determine which phase is non-energized at a particular point in time), and a commutation error detector circuit are also preferably provided. New motors utilizing the circuitry have increased reliability and precise velocity regulation.

    Stator and method of constructing same for high power density electric
motors and generators
    87.
    发明授权
    Stator and method of constructing same for high power density electric motors and generators 失效
    高功率密度电动机和发电机的定子及其构造方法

    公开(公告)号:US5382859A

    公开(公告)日:1995-01-17

    申请号:US937311

    申请日:1992-09-01

    摘要: A stator core for rotary high power density electro-mechanical transducers formed of multiple segments which have a plurality of radially oriented teeth. The stator core is a composite of two or more segments circumferentially combined to form a cylindrical stator or armature for electric motors or generators. The segments are wound with wire either when the segments are aligned linearly, when arranged circumferentially on the inside surface of a jig or about a cylinder. The wound stator can have teeth extending radially outwardly or inwardly, to accommodate an outside or inside rotor.

    摘要翻译: 一种用于由具有多个径向定向的齿的多个段形成的旋转高功率密度机电换能器的定子铁芯。 定子芯是两个或更多个段的复合体,其周向组合形成用于电动马达或发电机的圆柱形定子或衔铁。 当线段线性地排列时,当沿着圆周方向布置在夹具的内表面上或围绕圆柱体时,线段用线缠绕。 缠绕的定子可以具有径向向外或向内延伸的齿,以容纳外部或内部转子。