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    CONTROL OF FLOW NETWORKS
    43.
    发明申请
    CONTROL OF FLOW NETWORKS 有权
    流量网络控制

    公开(公告)号：US20160054713A1

    公开(公告)日：2016-02-25

    申请号：US14780882

    申请日：2014-04-17

    Applicant: NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY (NTNU)

    Inventor： Bjarne FOSS ,  Vidar GUNNERUD

    IPC: G05B13/04

    CPC classification number: G05B13/041 ,  E21B41/00 ,  E21B43/00 ,  E21B43/34

    Abstract: A method for control of a flow network in order to improve the performance of the flow network comprises: (a) applying predetermined excitations at multiple control points within the flow network, wherein the multiple control points are at different branches of the flow network; (b) receiving measurements of changes in one or more flow parameter(s) in one or more flow path(s) in which flows of more than one of the different branches have been combined; (c) carrying out an analysis of the flow parameter measurements to identify variations induced by the applied excitations; (d) determining an adjustment to be made at one or more of the control point(s) in order to improve the performance of the flow network, for example by building and solving an optimisation model; (e) making the determined adjustment to the control point(s) of the flow network or making an alternative adjustment decided upon by the flow network operator; and (f) repeating steps (a) to (e) one or more times to thereby iteratively improve the performance of the flow network.

    Abstract translation: 为了提高流网络的性能，控制流网络的方法包括：（a）在流网络内的多个控制点处应用预定的激励，其中多个控制点在流网络的不同分支处; （b）接收在一个或多个流路中的一个或多个流动参数的变化的测量，其中已经组合了多于一个不同分支的流; （c）对流量参数测量进行分析以识别由所施加的激励引起的变化; （d）确定在所述控制点的一个或多个处进行的调整，以便例如通过构建和求解优化模型来改善所述流网络的性能; （e）对流网络的控制点进行确定的调整或由流网络运营商确定的替代调整; 和（f）重复步骤（a）至（e）一次或多次，从而迭代地提高流网络的性能。

    SOLAR CELLS
    45.
    发明申请
    SOLAR CELLS 审中-公开
    太阳能电池

    公开(公告)号：US20150194549A1

    公开(公告)日：2015-07-09

    申请号：US14409837

    申请日：2013-06-21

    Applicant: NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY (NTNU)

    Inventor： Helge Weman ,  Bjørn-Ove Fimland ,  Dong Chul Kim

    IPC: H01L31/0352 ,  H01L31/0224 ,  H01L31/18

    CPC classification number: H01L31/035227 ,  H01L31/022466 ,  H01L31/022475 ,  H01L31/022483 ,  H01L31/0304 ,  H01L31/035281 ,  H01L31/1804 ,  H01L31/1828 ,  H01L31/184 ,  H01L31/1852

    Abstract: A composition of matter, in particular a photovoltaic cell, comprising: at least one core semiconductor nanowire on a graphitic substrate, said at least one core nanowire having been grown epitaxially on said substrate wherein said nanowire comprises at least one group III-V compound or at least one group II-VI compound or at least one group IV element; a semiconductor shell surrounding said core nanowire, said shell comprising at least one group III-V compound or at least one group II-VI compound or at least one group IV element such that said core nanowire and said shell form a n-type semiconductor and a p-type semiconductor respectively or vice versa; and an outer conducting coating surrounding said shell which forms an electrode contact.

    Abstract translation: 物质的组合物，特别是光伏电池，包括：在石墨基底上的至少一个核半导体纳米线，所述至少一个核心纳米线已经在所述基底上外延生长，其中所述纳米线包含至少一种III-V族化合物或 至少一种II-VI族化合物或至少一种IV族元素; 围绕所述芯纳米线的半导体外壳，所述壳包含至少一种III-V族化合物或至少一种II-VI族化合物或至少一种IV族元素，使得所述核心纳米线和所述壳形成n型半导体， 分别为p型半导体，反之亦然; 以及围绕所述外壳的外导电涂层，其形成电极接触。

    Method and apparatus for calibrating an instrument for surgical intervention
    46.
    发明授权
    Method and apparatus for calibrating an instrument for surgical intervention 有权

    公开(公告)号：US12220178B2

    公开(公告)日：2025-02-11

    申请号：US17272451

    申请日：2019-09-13

    Applicant: Norwegian University of Science and Technology (NTNU)

    Inventor： Daniel Fossum Bratbak

    IPC: A61B34/20 ,  G06T7/73 ,  A61B17/00

    Abstract: A method of calibrating an instrument for surgical intervention is provided. The instrument to be calibrated has a tip at a distal end thereof and a navigation array that is spaced from the distal end and is detectable in space. The navigation array has a fixed spatial and angular relationship with the tip. The method comprises the steps of: placing a calibrator on the tip of the instrument such that the tip is positioned within the calibrator at a known displacement from the centre of the calibrator, the calibrator having a circular shape and being detectable as a single point in space; detecting the position of the navigation array and the centre of the calibrator; and determining the position of the centre of the calibrator relative to the navigation array, thereby calibrating the position of the tip of the instrument relative to the navigation array. There is also provided a calibrator for use in such a method.

    Joints for Pre-Cast Driven Piles
    47.
    发明申请
    Joints for Pre-Cast Driven Piles 有权

    公开(公告)号：US20250003168A1

    公开(公告)日：2025-01-02

    申请号：US18710355

    申请日：2022-11-15

    Applicant: NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Habibollah SADEGHI ,  Rao Martand SINGH

    IPC: E02D5/52 ,  F24T10/10

    Abstract: A first part of a joint for joining pre-cast driven geothermal pile segments comprises a cap having an end plate and a peripheral wall extending from a periphery of the end plate, the end plate and peripheral wall defining a volume; and at least two apertures passing through the cap, wherein each aperture provides a passage from an inside of the cap to an outside of the cap; and wherein each aperture is provided within a recess in the peripheral wall such that each aperture is thereby recessed within the volume defined by the end plate and the peripheral wall. The apertures being recessed ensures that they, and any fluid connection made thereat, are shielded from any damage and the harsh forces involved in the installation of the driven pile segments.

    Determination of Drillstring Parameters and Associated Control
    50.
    发明公开
    Determination of Drillstring Parameters and Associated Control 审中-公开

    公开(公告)号：US20230151725A1

    公开(公告)日：2023-05-18

    申请号：US17802282

    申请日：2021-02-25

    Applicant: Norwegian University of Science and Technology

    Inventor： Sigve Hovda ,  Sigbjorn Sangesland ,  Asbjorn Djupdal ,  Magnus Jahre

    IPC: E21B44/00 ,  E21B37/00 ,  E21B45/00 ,  E21B47/04

    CPC classification number: E21B44/00 ,  E21B37/00 ,  E21B45/00 ,  E21B47/04 ,  E21B2200/20

    Abstract: A method for modelling a drillstring in a wellbore, the method comprising providing a model of the drillstring, the model representing the drillstring by a sequence of alternating springs and elements, where each element describes the mass and/or the moment of inertia of a corresponding part of the drillstring and each spring represents at least one of: axial, torsional and/or bending stiffnesses of one of the corresponding parts of the drillstring, wherein the model describes one or more forces on each element by one or more systems of ordinary equations of first or second order, where each equation comprise a linear part that comprises constant coefficients and a non-linear part that includes one or more of: one or more non-linear terms, one or more non-smooth terms, one or more time dependent terms and/or one or more coupled terms; and the method comprises recalculating the model for a plurality of time steps, wherein recalculating the model for the respective time step comprises calculating one, two or three dimensional positions, orientations and/or associated derivatives of all of the elements for the respective time step based on one, two or three dimensional positions, orientations and/or associated derivatives of all element at a previous time step, by describing the non-linear part by a form of expansion with respect to time and solving the system of equations either analytically or by the use of exponential integrators for the duration of the respective time step. Also described is a method of cleaning a wellbore using the model from the above method.

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