专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US10298007B2 Digital power supply protection circuit, and apparatus 有权
公开(公告)号：US10298007B2
公开(公告)日：2019-05-21
申请号：US15670648
申请日：2017-08-07
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Li Xiang , Xiaodong Fan
IPC分类号： G06F9/00 , H02H7/085 , H02H7/12 , H02H7/08 , H02M1/40 , H02M3/337 , H02M1/32
摘要： A digital power supply protection circuit includes: a signal preprocessing circuit, configured to receive an overcurrent signal and a first inceptive impulse clock timing, and perform preprocessing on the overcurrent signal according to the first inceptive impulse clock timing so as to obtain a first reference signal a signal generation circuit, configured to receive the first inceptive impulse clock timing, count time duration between a rising edge of the first inceptive impulse clock timing and a rising edge of the first reference signal so as to obtain a first time duration, and upon the first time duration is greater than a second time duration, generate a first disabling signal by delaying the rising edge of the first inceptive impulse clock timing for the second time duration; and a clock timing adjustment circuit, configured to adjust the first inceptive impulse clock timing according to the first disabling signal.

52. 发明授权

US10232874B2 Motor drive device and electric power steering device 有权
公开(公告)号：US10232874B2
公开(公告)日：2019-03-19
申请号：US15523738
申请日：2015-11-04
申请人： Nidec Corporation
发明人： Osamu Maeshima
IPC分类号： B60L3/00 , B62D5/04 , H02H7/08 , H02P6/08 , H02P6/12 , H02H7/122 , H02P25/22 , H02P27/06 , H02P29/024
摘要： A motor drive device includes a plurality of control systems that individually supply drive currents to a plurality of coil groups included in a motor. The motor drive device independently sets the current command values for the respective control systems. Based on the set current command values, drive instructions are supplied to drive circuits of inverters with respect to the respective control systems, thereby supplying drive currents from the inverters to the coil groups. The motor drive device detects a failure in any of the inverters and the coil groups with respect to each control system, and stops only the failed control system or causes only the failed control system to fall back. The motor drive device further includes a main computing device, and an auxiliary computing device. Consequently, if the auxiliary computing device is normal even in case the main computing device fails, driving of the motor can be continued using one or some of the control systems.

53. 发明申请

US20190067934A1 Direct Current Motor Controller 审中-公开
公开(公告)号：US20190067934A1
公开(公告)日：2019-02-28
申请号：US16118199
申请日：2018-08-30
申请人： Stan Smith
发明人： Stan Smith
IPC分类号： H02H7/08 , H02P1/18 , H02P7/03
摘要： A direct current motor controller includes a housing, a plurality of terminals, a first two-way switch, a second two-way switch, an actuating mechanism, and a remote controller plug. The terminals and remote controller plug traverse out of the housing as the first two-way switch, the second two-way switch, and the actuating mechanism are mounted within the housing. A first output terminal, a first power supply positive terminal, and a third power supply negative terminals from the terminals are electrically connected to the first two-way switch. A second output terminal, a second power supply positive terminal, and the third power supply negative terminal from the terminals are electrically connected to the second two-way switch. The remote controller plug is electrically connected to the second power supply positive terminal. The actuating mechanism operatively couples with the first and second two-way switches to toggle and inversely toggle the first and second two-way switches.

54. 发明授权

US10205198B2 Power tool and battery pack 有权
公开(公告)号：US10205198B2
公开(公告)日：2019-02-12
申请号：US15315174
申请日：2015-05-22
申请人： Hitachi Koki Co., Ltd.
发明人： Yoshikazu Kawano , Nobuhiro Takano , Toshiaki Koizumi , Kazuhiko Funabashi , Kenichirou Yoshida , Takao Aradachi
IPC分类号： H02J7/00 , H01M10/42 , B25F5/00 , H01M10/44 , H01M10/48 , B60L3/00 , H01M2/10 , H02H3/05 , H02H7/08 , H02J1/00
摘要： A power tool includes a motor and control means for controlling the motor. The motor is capable of being driven by power supplied from a battery pack including a battery cell. The control means is configured to continue to rotate the motor even when a motor-halt signal is inputted from the battery pack. With this structure, the power tool can be used continuously without need to halt rotation of the motor, even when receiving a halt signal, such as an overdischarge detection signal or an overcurrent detection signal.

55. 发明授权

US10199979B2 Power conversion device 有权
公开(公告)号：US10199979B2
公开(公告)日：2019-02-05
申请号：US14911166
申请日：2013-11-11
申请人： Mitsubishi Electric Corporation
发明人： Tatsuya Mori , Akira Furukawa
IPC分类号： G01R31/02 , H02H3/04 , H02H7/08 , H02P27/08 , H02M7/5387 , H02M7/5395 , H02P21/22 , G01R19/00 , H02M1/00
摘要： A power conversion device includes an alternating current rotating machine having a multiple of multi-phase windings, a multiple of power conversion means that convert direct current voltage of a direct current power supply based on a multiple of switching signals and apply voltage to the multiple of multi-phase windings, first current detection means that detects a first bus current, which is current flowing between the power conversion means that applies voltage to one multi-phase windings of the multiple of multi-phase windings and the direct current power supply, and first phase current calculation means that calculates the current flowing through the one multi-phase windings based on the first bus current, wherein the first current detection means detects the first bus current at a timing at which a multiple of voltage vectors based on the multiple of switching signals neighbor or coincide.

56. 发明授权

US10150271B2 Press machine and method of controlling press machine 有权
公开(公告)号：US10150271B2
公开(公告)日：2018-12-11
申请号：US14761347
申请日：2014-02-04
申请人： KOMATSU INDUSTRIES CORPORATION
发明人： Yukihiro Yamada
IPC分类号： B30B15/14 , B30B1/26 , B30B15/28 , H02P29/024 , H02P25/032 , H02P29/032 , H02H7/08
摘要： A press machine includes a servo amplifier configured to supply a drive current to a servo motor, a current detector for detecting the drive current, a rotational angle detector for detecting a rotational angle of a rotary motion provided by the servo motor, and a controller. The controller is configured to set a press production speed by setting a correspondence between rotational angles and rotational speeds at the rotational angles, which defines the rotary motion. The controller is configured to determine whether or not the drive current detected by the current detector is greater than or equal to a first threshold. The controller is configured to reduce all the rotational speeds by an equal ratio when the drive current detected by the current detector is greater than or equal to the first threshold.

57. 发明申请

US20180351348A1 PROTECTION CIRCUIT FOR BRUSHLESS DC MOTOR, AND CONTROL DEVICE 审中-公开
公开(公告)号：US20180351348A1
公开(公告)日：2018-12-06
申请号：US15777984
申请日：2016-09-19
申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
发明人： LINA YAO , WEILIN GUO , WENXIAN WU , ANYONG HU
IPC分类号： H02H7/08 , H02P6/28
CPC分类号： H02H7/0811 , H02H1/0007 , H02P6/28
摘要： Provided are a protection circuit for a brushless DC motor, and a control device. The protection circuit is applied to a control device for a brushless DC motor, the control device including a main control chip and a protection circuit for driving a brushless DC motor. The protection circuit includes a sampling signal input end (RNF), a first resistor (R1), a first capacitor (C1), a second capacitor (C2), a comparator (IC2) and a switching element (IC1), connected together in a preset structure.

58. 发明授权

US10145887B2 Semiconductor device and electronic control system including the same 有权
公开(公告)号：US10145887B2
公开(公告)日：2018-12-04
申请号：US15987572
申请日：2018-05-23
申请人： RENESAS ELECTRONICS CORPORATION
发明人： Kazuaki Kurooka , Yasuo Morimoto , Yoshihiro Funato
IPC分类号： G01R31/00 , G01R31/02 , H03F3/45 , H02P6/12 , G01D5/12 , H02H7/08 , H03K3/017
摘要： According to one embodiment, a semiconductor device includes external terminals supplied with the pair of voltage signals based on a detection result of a resolver through first and second input resistances, respectively, an operation amplifier configured to amplify a potential difference between the pair of the voltage signals supplied to the external terminals, a feedback resistance disposed between an output terminal of the operation amplifier and one of two input terminals thereof, switches disposed between the two input terminals of the operation amplifier and the external terminals, respectively, and a short-circuit failure detection circuit configured to detect whether or not a short-circuit failure has occurred in the resolver based on a voltage level of each of the external terminals in a state where the switches are in an off-state.

59. 发明授权

US10135367B2 Integrated soft start and safety shutdown 有权
公开(公告)号：US10135367B2
公开(公告)日：2018-11-20
申请号：US14107811
申请日：2013-12-16
申请人： Woodward, Inc.
发明人： David L. Ried , Dustin Kramer , Dan Gotko , Charles M. Brunswig , Greg Opper
IPC分类号： H02M3/335 , H02P6/34 , H02H3/087 , B25J9/16 , H02P1/00 , H02H7/122 , H02H7/08 , H02H9/00 , H02P29/032
摘要： The subject matter of this specification can be embodied in, among other things, a current control assembly that includes an electrical current flow path having a maximum current flow rate, a first current limiter in the electrical current flow path, the first current limiter comprising circuitry configured to adjustably restrict current flow along the electrical current flow path to a flow rate less than the maximum current flow rate in response to receipt of a first signal at a first input port, and a second current limiter in the electrical current flow path, the second current limiter arranged to interrupt the electrical current flow path in response to receipt of a second signal at a second input port.

60. 发明授权

US10116244B2 Motor driving circuit and method providing smooth recovery from transient power loss 有权
公开(公告)号：US10116244B2
公开(公告)日：2018-10-30
申请号：US15453633
申请日：2017-03-08
申请人： SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
发明人： Fumio Kumazawa , Takashi Ogawa
IPC分类号： G05B5/00 , G05D3/00 , H02H7/08 , H02P1/04 , H02P6/20 , H02P6/14
摘要： According to at least some embodiments, a method for driving a motor includes, upon a restart of the motor, determining whether the rotor is rotating based on a signal generated from outputs of at most one Hall sensor. The method further includes, if it is determined that the rotor is rotating, determining a plurality of output duty values for driving a plurality of windings of the motor. The method further includes generating a drive signal for driving the motor based on the determined plurality of output duty values.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式