公开(公告)号：US20180259566A1

公开(公告)日：2018-09-13

申请号：US15760078

申请日：2016-09-09

申请人： Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： Michael SCHNEIDER ,  Jörg FRANKE

IPC分类号： G01R31/06

CPC分类号： G01R31/06 ,  G01R31/027 ,  G01R31/34 ,  G01R31/346

摘要： A measurement method is for determining core losses, which serve to produce magnetic circuits for electrical machines. In order to allow an accurate measurement that is as quick as possible, it is proposed that a magnetic coupling is produced between a measuring coil connected in a capacitor and a core to be measured, and the measuring coil is then acted upon by an alternating frequency in order to measure the resonant frequency of the resulting resonant circuit and/or the quality of the resulting resonant circuit as a measure of the core loss.

公开(公告)号：US20180088166A1

公开(公告)日：2018-03-29

申请号：US15702256

申请日：2017-09-12

申请人： Toyota Jidosha Kabushiki Kaisha

发明人： Hiroki Mima

IPC分类号： G01R31/06 ,  G01R31/00 ,  F16K37/00 ,  B60T17/22

CPC分类号： G01R31/06 ,  B60T17/221 ,  F16K37/0041 ,  G01R31/006

摘要： A solenoid is determined abnormal if a current flowing therethrough at a certain duty ratio falls within an abnormal range. After the abnormal determination, a first duty ratio is used to cause a current to flow through the solenoid at such a current value within a first range as to not drive the solenoid valve. The solenoid is determined provisionally normal if the current at the first duty ratio falls within the first range. After the provisionally normal determination, a second duty ratio is used to cause a current to flow through the solenoid at such a current value within a second range including a current value range greater than the first range as to drive the solenoid valve. The solenoid is determined normal if the current at the second duty ratio falls within the second range.

公开(公告)号：US20180029554A1

公开(公告)日：2018-02-01

申请号：US15557377

申请日：2016-01-25

申请人： Robert Bosch GmbH

发明人： Hartmut Schumacher ,  Ruediger Karner

IPC分类号： B60R21/017 ,  G01R31/00 ,  G01R31/02

CPC分类号： B60R21/0173 ,  G01R31/005 ,  G01R31/021 ,  G01R31/06 ,  G01R31/2879

摘要： A method for maintaining an actuator for an airbag control device. The method has a step of impressing an electric current flow through the actuator using an electric voltage having a voltage value. In addition, the method has a step of ascertaining an electric measuring current through the actuator. Here, the electric measuring current through the actuator occurs on account of the impressed electric current flow through the actuator. In addition, the method has a step of executing a comparison of the electric measuring current through the actuator to a threshold value. Moreover, the method has a step of adjusting the voltage value of the electric voltage for impressing the electric current flow through the actuator as a function of the comparison.

公开(公告)号：US09828821B2

公开(公告)日：2017-11-28

申请号：US13399388

申请日：2012-02-17

申请人： Julian Davis ,  Martin Stokes

发明人： Julian Davis ,  Martin Stokes

IPC分类号： G01R31/06 ,  E21B33/035 ,  E21B34/06 ,  E21B41/00 ,  H01F7/18 ,  F16K37/00

CPC分类号： E21B33/0355 ,  E21B34/066 ,  E21B41/0007 ,  F16K37/0083 ,  G01R31/06 ,  H01F7/1844 ,  H01F2007/1888

摘要： A method of testing a solenoid of a directional control valve in a subsea hydrocarbon production system, the solenoid having a coil and an armature for operating the valve and the coil being energized by a drive voltage across it, the method comprises removing or reducing the drive voltage and sensing current through the coil to produce an indication of movement of the armature.

公开(公告)号：US20170299646A1

公开(公告)日：2017-10-19

申请号：US15021689

申请日：2014-09-09

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Christian STAUBACH

IPC分类号： G01R31/11 ,  G01R31/06 ,  G01R31/02

CPC分类号： G01R31/11 ,  G01R31/025 ,  G01R31/06 ,  G01R31/1272 ,  G01R31/34

摘要： A method and an apparatus check a multiplicity of mutually insulated strands in a stator winding bar of an electric machine. The method includes injecting a test signal, determining a first component of the test signal, and comparing at least the first component with a reference signal in order to determine damage to insulation between individual strands of the multiplicity of strands. The apparatus includes a signal source and a measuring apparatus. The method and the apparatus are particularly suitable for checking stator winding bars as are used in a generator and/or an electric motor.

公开(公告)号：US09759760B2

公开(公告)日：2017-09-12

申请号：US13552361

申请日：2012-07-18

申请人： Thyssen Leif

发明人： Thyssen Leif

IPC分类号： G01R31/327 ,  G01R31/06 ,  G01R31/28 ,  G01R31/02

CPC分类号： G01R31/06 ,  G01R31/025 ,  G01R31/2829

摘要： A device for testing a solenoid valve includes: a voltage generator for applying a short pulse of voltage, which is not long enough to open the solenoid valve, to the windings of the solenoid valve; a current meter configured for measuring the current flowing through the windings of the solenoid valve; and an analysis device which is configured for analysing the current measured by the current meter for detecting a potential fault of the solenoid valve.

公开(公告)号：US20170256355A1

公开(公告)日：2017-09-07

申请号：US15505549

申请日：2015-07-29

申请人： Robert Bosch GmbH

发明人： Dragan KRUPEZEVIC ,  Juergen MACK ,  Marcin REJMAN ,  Martin GONDA

IPC分类号： H01F27/42 ,  H01F38/14 ,  H01F27/28

CPC分类号： H01F27/42 ,  G01R31/06 ,  H01F27/2828 ,  H01F27/33 ,  H01F27/34 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025

摘要： An inductive energy transmission system including: a primary coil connectible to an electrical useful voltage source, the primary coil being connected to a first capacitor, the first capacitor being connected to a local ground potential of the energy transmission system; and a secondary coil inductively coupled to the primary coil; wherein a second capacitor is situated between the primary coil and the local ground potential of the energy transmission system.

公开(公告)号：US20170227594A1

公开(公告)日：2017-08-10

申请号：US15040536

申请日：2016-02-10

申请人： General Electric Company

发明人： Zhiying Zhang ,  Sarasij Das ,  Tarlochan Sidhu ,  Mohammad Reza Dadash Zadeh

IPC分类号： G01R31/06 ,  H02H7/045 ,  G01R31/08

CPC分类号： G01R31/06 ,  G01R31/025 ,  H02H3/32 ,  H02H7/04

摘要： Embodiments of the disclosure relate to detecting turn-to-turn faults in one or more windings of various objects. In one implementation, a fault detector uses a differential protection algorithm to detect a turn-to-turn fault in a winding of a three-phase shunt reactor. Various voltage and current measurements carried out upon the three-phase shunt reactor are used to calculate a difference value between a voltage-based parameter and a current-based parameter. The voltage-based parameter is indicative of a normalized negative voltage imbalance and the current-based parameter is indicative of a normalized negative current imbalance. A turn-to-turn winding fault is declared when the difference value is not equal to zero.

公开(公告)号：US09494125B2

公开(公告)日：2016-11-15

申请号：US14304510

申请日：2014-06-13

申请人： Innova Electronics, Inc.

发明人： Phuong Pham ,  Doug Constable ,  John Protti

IPC分类号： F02P17/00 ,  F02P17/12 ,  G01R31/06 ,  H01F7/18

CPC分类号： F02P17/12 ,  F02P2017/121 ,  G01R31/06 ,  H01F7/1844

摘要： An ignition coil tester for testing an ignition coil having primary and secondary circuits. The tester includes a cable connector including a primary circuit connector and a secondary circuit connector electrically connectable to the ignition coil. The tester further includes an electronic ignition control module electrically coupled to the primary and secondary circuit connectors and configured to generate ignition coil testing signals for communication to the ignition coil via the primary and secondary circuit connectors The electronic ignition control module is further configured to monitor the connection between the primary circuit connector and the primary circuit of the ignition coil and the connection between the secondary circuit connector and the secondary circuit of the ignition coil, and cease communication of the ignition coil testing signals when the primary circuit connector or secondary circuit connector are not connected to the respective ones of the primary and secondary circuits.

摘要翻译： 一种用于测试具有初级和次级电路的点火线圈的点火线圈测试仪。 测试器包括电缆连接器，其包括主电路连接器和可与点火线圈电连接的次级电路连接器。 该测试器还包括电连接到主电路连接器和次电路连接器的电子点火控制模块，并被配置为产生点火线圈测试信号，用于经由主电路连接器和次电路连接器与点火线圈通信。电子点火控制模块还被配置为监视 主回路连接器与点火线圈的主回路之间的连接以及次级回路连接器与点火线圈的二次回路之间的连接，并且当主回路连接器或二次回路连接器为 不连接到主电路和次电路中的相应电路。

公开(公告)号：US20160291075A1

公开(公告)日：2016-10-06

申请号：US15034812

申请日：2014-12-10

申请人： SCANIA CV AB

发明人： Joakim Sommansson

IPC分类号： G01R31/06 ,  F16K31/06 ,  F16K37/00 ,  G01R19/25

CPC分类号： G01R31/06 ,  F15B19/005 ,  F16K31/0675 ,  F16K37/0041 ,  F16K37/0083 ,  G01R19/2506 ,  H01F7/1844

摘要： Disclosed is a method for diagnosis of a solenoid valve, wherein said solenoid valve comprises a solenoid and a moveable valve element, wherein said moveable valve element is moveable between a first state and a second state, wherein the movement from said first state to said second state is achieved through supply of current to said solenoid. The method comprises: to, at a first time, where the current through said solenoid is increasing, determine a first derivative for said current, to, at a second time, following said first time, and where the current through said solenoid is increasing, determine a second derivative for said current, and to, based on a comparison between said first derivative and said second derivative, diagnose said solenoid valve.

摘要翻译： 公开了一种用于诊断电磁阀的方法，其中所述电磁阀包括螺线管和可移动阀元件，其中所述可移动阀元件可在第一状态和第二状态之间移动，其中从所述第一状态到所述第二状态的移动 通过向所述螺线管供应电流来实现状态。 该方法包括：在第一时间，在通过所述螺线管的电流增加的情况下，确定所述电流的一阶导数，在第二时间之后，在所述第一时间之后，并且在通过所述螺线管的电流增加的地方， 确定所述电流的二次导数，并且基于所述一阶导数和所述二阶导数之间的比较来诊断所述电磁阀。