公开(公告)号：US20240345165A1

公开(公告)日：2024-10-17

申请号：US18380003

申请日：2023-10-13

申请人： HL MANDO CORPORATION

发明人： Taeyoung KO

IPC分类号： G01R31/34 ,  G01R31/52 ,  G01R31/54 ,  H01F7/18

CPC分类号： G01R31/34 ,  G01R31/52 ,  G01R31/54 ,  H01F7/1844

摘要： A method of detecting a short or open fault even in a state where a solenoid actuator is not driven, and a system and a method of diagnosing a fault symptom are provided. A fault detection method for a solenoid actuator in a drive circuit of the solenoid actuator including a main controller, a high-side driver, a low-side driver and a short monitoring unit includes: detecting, by the main controller, a first short monitoring measurement value of the short monitoring unit in a state where at least one of the high-side driver and the low-side driver is turned off; comparing, by the main controller, the first short monitoring measurement value with a pre-stored short monitoring threshold value; and determining, by the main controller, a fault of the solenoid actuator based on the comparison result.

公开(公告)号：US11948739B2

公开(公告)日：2024-04-02

申请号：US17568248

申请日：2022-01-04

申请人： Cirrus Logic International Semiconductor Ltd.

发明人： Emmanuel A. Marchais ,  Tejasvi Das ,  Siddharth Maru

IPC分类号： H01F7/18

CPC分类号： H01F7/1844 ,  H01F2007/185

摘要： A system may include an electromagnetic actuator, a first coil configured to drive mechanical displacement of the electromagnetic actuator, a second coil configured to drive mechanical displacement of the electromagnetic actuator, and an inductance sensing subsystem having an inductance sensing path coupled to the first coil and the second coil. The inductance sensing subsystem may be configured to select one of the first coil and the second coil for driving mechanical displacement of the electromagnetic actuator, select the other of the first coil and the second coil as a sensing coil for sensing displacement of the electromagnetic actuator, determine a displacement of the electromagnetic actuator based on a measurement of estimated inductance of the sensing coil, and when switching selection of the sensing coil from the first coil to the second coil determine the displacement of the first coil based on a measured inductance of the first coil at approximately the time of switching selection, estimate state variables of the inductance sensing path to be used with the second coil based on the displacement, and apply the state variables to the inductance sensing path after switching selection of the sensing coil from the first coil to the second coil.

公开(公告)号：US11940059B2

公开(公告)日：2024-03-26

申请号：US17284920

申请日：2019-10-09

申请人： Continental Teves AG & Co. oHG

发明人： Alexander Michel ,  Dirk Morschel ,  Eduard Wiens

IPC分类号： G01R35/00 ,  F16K31/06 ,  F16K37/00 ,  G01R33/00 ,  G01V3/08 ,  G01V13/00 ,  H01F7/18

CPC分类号： F16K37/0083 ,  F16K31/0675 ,  G01R33/0035 ,  G01R35/00 ,  G01R35/005 ,  G01V3/08 ,  G01V3/081 ,  G01V13/00 ,  H01F2007/1861 ,  H01F2007/1888

摘要： A method for determining a switching state of a valve, an inductance variable being determined on the basis of current and voltage measurements and the switching state being determined on the basis of the inductance variable. Also disclosed is a solenoid valve assembly for carrying out such a method.

公开(公告)号：US11915869B2

公开(公告)日：2024-02-27

申请号：US17881690

申请日：2022-08-05

申请人： Hanchett Entry Systems, Inc.

发明人： Randall Shaffer

IPC分类号： H01F7/18 ,  H02M3/335 ,  H01F7/06

CPC分类号： H01F7/18 ,  H01F7/064 ,  H02M3/335 ,  H02M3/33523

摘要： A latch system includes a releasably secured latch or keeper and a solenoid assembly. The solenoid assembly has a solenoid driver coupled to a power supply, a switching circuit connected with the solenoid driver, and a function generator to selectively adjust a frequency of a pick current output from the power supply and provided to the solenoid driver. The frequency is adjusted until the pick current induces a resulting vibration of said latch system sufficient to free a preloaded latch or keeper. The adjusted frequency may be a target frequency or a range of frequencies. Also included may be a preload sensor. When a preload is sensed, the frequency may be adjusted by the function generator until the pick current induces a resulting vibration of said latch system sufficient to free a preloaded latch or keeper.

公开(公告)号：US20240021351A1

公开(公告)日：2024-01-18

申请号：US18026053

申请日：2021-09-13

申请人： PHYSIK INSTRUMENTE (PI) GMBH & CO. KG

发明人： Daniel GEISSLER

IPC分类号： H01F7/122 ,  H01F7/16 ,  H01F7/18

CPC分类号： H01F7/122 ,  H01F7/1646 ,  H01F7/1844

摘要： Adjustment device, comprising: a base component (B1), an adjustment body (10), at least one flexure hinge (21), by means of which the adjustment body (10) is rotatably hinged on the base component (B1) about a flexure hinge rotation axis (D1), and at least one drive device (C), which is coupled to the base component (B1) and to an adjustment body connection device (AV), in order to move the same relative to each other, wherein the drive device (C) comprises an actor (60) which comprises an electrical coil (71) with a coil axis (AS) extending along the flexure hinge rotation axis (D1) and a compensation component (80) of a magnetizable or magnetized material and at least one permanent magnet segment (MS), which is disposed beside the actor (60) movably beside the same, wherein the magnet field lines in the interior of the permanent magnet segment (MS) extend along the coil axis (AS), and an adjustment system, an computer program product.

公开(公告)号：US11875940B2

公开(公告)日：2024-01-16

申请号：US16767200

申请日：2018-11-29

申请人： JFE Steel Corporation

发明人： Yuki Takaki ,  Masaki Kobayashi ,  Junichi Yotsuji

IPC分类号： H01F7/20 ,  B66C1/06 ,  B66C1/04 ,  H01F7/13 ,  H01F7/18

CPC分类号： H01F7/206 ,  B66C1/04 ,  B66C1/06 ,  H01F7/13 ,  H01F7/18

摘要： An object is to provide a lifting-magnet attachment magnetic pole unit, a lifting magnet, a steel material conveying method, and a steel plate manufacturing method with which only one or a desired pieces of steel materials can be held. The present invention is a lifting-magnet attachment magnetic pole unit for a lifting magnet used to lift and convey a steel material with magnetic force. The lifting-magnet attachment magnetic pole unit includes a first split magnetic pole that is in contact with an iron core of the lifting magnet and has a branched structure, and a second split magnetic pole that is in contact with a yoke of the lifting magnet and has a branched structure. The first and second split magnetic poles are alternately arranged.

公开(公告)号：US11763971B2

公开(公告)日：2023-09-19

申请号：US17855116

申请日：2022-06-30

申请人： Apple Inc.

发明人： Darya Amin-Shahidi ,  Hari Vasudevan ,  Juil Lee ,  Denis G. Chen

IPC分类号： H01F7/18 ,  G06F3/01 ,  G06F3/041 ,  H02P25/08 ,  H02P25/092 ,  H01H47/04

CPC分类号： H01F7/1844 ,  G06F3/016 ,  G06F3/041 ,  H02P25/08 ,  H02P25/092 ,  H01F2007/185 ,  H01F2007/1855 ,  H01F2007/1861 ,  H01H2047/046

摘要： Disclosed herein are reluctance actuators and methods for feedback control of their applied force. Embodiments of the reluctance actuators include an electromagnet positioned to deflect a metallic plate to provide a haptic output. The control of the force is provided without force sensors (sensorless control) by monitoring voltage and/or current (V/I) applied during an actuation. For a given intended force output, an electrical parameter value (flux, current, or other parameter) is read from a look up table (LUT). The LUT may store a present value of the inductance of the reluctance actuator. The feedback control may be a quasi-static control in which the LUT is updated after actuation based on the monitored V/I. The feedback control may be real-time, with a controller comparing an estimated electrical parameter value based on the measured V/I with the value from the LUT.

公开(公告)号：US11657943B2

公开(公告)日：2023-05-23

申请号：US17285054

申请日：2019-10-16

申请人： Moving Magnet Technologies

发明人： Guillaume Loussert ,  Stéphane Biwersi

IPC分类号： H01F7/122 ,  H01F1/14 ,  H01F7/14 ,  H01F7/16 ,  H01F7/18

CPC分类号： H01F7/122 ,  H01F1/14 ,  H01F7/14 ,  H01F7/1615 ,  H01F7/1872 ,  H01F2007/1669 ,  H01F2007/1692

摘要： An actuator for controlling the movement of an element between two stable positions with pulsed electrical control without a change in polarity comprises: a ferromagnetic mobile mass, at least one electrically controlled wire coil that is fixed with respect to the mobile mass, at least two ferromagnetic poles that are fixed with respect to the mobile mass and on either side of the mobile mass. The actuator comprises at least one permanent magnet that attracts the mobile mass in order to achieve the two stable positions. The mobile mass defines, with the ferromagnetic poles, at least two variable air gaps during the movement of the mobile apparatus. The magnetic flux of the permanent magnet opposes the magnetic flux generated by the at least one coil regardless of the position of the mobile mass.

公开(公告)号：US20230052987A1

公开(公告)日：2023-02-16

申请号：US17784361

申请日：2020-12-11

申请人： DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

发明人： Mayura Arun Madane ,  Prachi Zambare ,  Prasanth Jyothi Prasad ,  Richa Mahesh Shinde ,  Arjun Thottupurathu Rejikumar ,  Dipesh Chauhan ,  Kailasrao Nilesh Surase ,  Rohit Tejsingh Chauhan ,  Ankit Jain

IPC分类号： H01F7/18 ,  F02D41/20 ,  F15B13/044 ,  F15B13/08 ,  F15B19/00

摘要： A system and method for detecting faults and optimiz-ing power usage of solenoid valves. The method includes obtaining a current signature of the solenoid coil, using a dedicated circuit to detect various features and using a pulse width modulation controller optimize the power output of the system. Additionally, using machine learning, the system can be optimized using data from the dedicated circuit.

公开(公告)号：US11537206B2

公开(公告)日：2022-12-27

申请号：US16474397

申请日：2018-11-20

申请人： BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

发明人： Ziqiang Guo ,  Jian Sun ,  Xinjian Liu ,  Yakun Wang ,  Lin Lin ,  Zhen Tang ,  Yu Lei ,  Minglei Chu ,  Jiankang Sun ,  Jinghua Miao ,  Guixin Yan ,  Feng Zi

IPC分类号： G06F3/01 ,  H04W4/80 ,  H01F7/08 ,  H01F7/18 ,  H01F3/08

摘要： A wearable device, an electronic system, an electronic device, a tactile feedback method and a storage medium are provided. The wearable device with tactile feedback includes an electromagnetic coil set, a driving circuit and a control circuit, the driving circuit is coupled with the electromagnetic coil set; the control circuit is configured to control the driving circuit to generate and output a coil current corresponding to the electromagnetic coil set to the electromagnetic coil set according to a control command; and the electromagnetic coil set is configured to receive the coil current and generate the tactile feedback based on the coil current.