公开(公告)号：US20240359289A1

公开(公告)日：2024-10-31

申请号：US18637694

申请日：2024-04-17

申请人： MILWAUKEE ELECTRIC TOOL CORPORATION

发明人： Zachary J. Evans ,  Alex P. Grotelueschen ,  Karly M. Schober ,  Jacob C. Strachan ,  Alexander C. Ghouse

IPC分类号： B24B49/00 ,  B24B23/02 ,  B24B55/00 ,  H02P29/024

CPC分类号： B24B49/006 ,  B24B23/02 ,  B24B55/00 ,  H02P29/024

摘要： A power tool includes a housing, a motor positioned within the housing, an output shaft driven by the motor, the output shaft configured to be coupled to an accessory for operation thereof, a sensing circuit configured to detect, during operation of the power tool, an operating characteristic of the motor, and a controller. The controller is configured to receive a signal from the sensing circuit representing the operating characteristic of the motor, compare the operating characteristic of the motor to a first predetermined threshold, and in response to the operating characteristic exceeding the predetermined threshold, perform a loss of control check on the power tool. Performing the loss of control check includes comparing a detected motion of the power tool to a second predetermined threshold, and tripping loss of control functionality based on whether the detected motion of the power tool exceeds the second predetermined threshold.

公开(公告)号：US12132431B2

公开(公告)日：2024-10-29

申请号：US18146812

申请日：2022-12-27

申请人： DENSO CORPORATION

发明人： Kouichi Nishibata

IPC分类号： H02K17/32 ,  H02K23/68 ,  H02K27/30 ,  H02M7/5387 ,  H02P7/00 ,  H02P27/06 ,  H02P29/024

CPC分类号： H02P29/0241 ,  H02M7/53871 ,  H02P27/06

摘要： A control circuit is applied to a system provided with a rotary electric machine, a power converter electrically connected to a winding of the rotary electric machine, a power source, a cutoff switch provided on an electrical path that connects the power source and the power converter, and a storage unit. The control circuit is provided with a failure determination unit that determines whether a failure occurs in the system and a regeneration prevention unit that prevents a power regeneration, where a current flows from a rotary electric machine side towards a storage unit side, from occurring. In the case where the failure determination unit determines that a failure occurs in the system, the cutoff switch is turned OFF after the regeneration prevention unit prevents an occurrence of the power regeneration.

公开(公告)号：US20240356477A1

公开(公告)日：2024-10-24

申请号：US18363250

申请日：2023-08-01

申请人： Hamilton Sundstrand Corporation

发明人： Nageswara Rao Kalluri ,  Swathika Sreedhar ,  Manish Kumar ,  Sharath Gowda ,  Bharath Kumar Raju Surapuraju

IPC分类号： H02P29/024 ,  H02M1/00 ,  H02M7/539 ,  H02P27/06

CPC分类号： H02P29/024 ,  H02M1/0009 ,  H02M7/539 ,  H02P27/06

摘要： A motor drive system includes an inverter comprising a plurality of switching elements on a first arm. A first switching element and a first resistor are connected in series between a DC input and an arm midpoint, and a second switching element and a second resistor are connected in series between the midpoint and ground. A signal conditioning circuit acts a sensor for the system and has first and second inputs. The first input is connected to the first leg between the first switching element and the first resistor, and the second input is connected to the first leg between the second resistor and the second switching element. The signal conditioning circuit can be the only current sensor connected to the arm and can be driven by the same power supply used to control the switching elements.

公开(公告)号：US20240322816A1

公开(公告)日：2024-09-26

申请号：US18673151

申请日：2024-05-23

申请人： Rohm Co., Ltd.

发明人： Takeshi KIKUCHI ,  Masato Nishinouchi ,  Akio SASABE ,  Daiki YANAGISHIMA

IPC分类号： H03K17/18 ,  H02P29/024

CPC分类号： H03K17/18 ,  H02P29/0241

摘要： A signal transmission device that transmits a driving signal for a power transistor from a primary circuit system to a secondary circuit system while isolating between the primary and secondary circuit systems includes: a first fault detection circuit configured to detect a fault in the primary circuit system; a second fault detection circuit configured to detect a fault in the secondary circuit system; a first signal transmission path configured to transmit the result of detection by the second fault detection circuit from the secondary circuit system to the primary circuit system while isolating between the primary and secondary circuit systems; and a self-test circuit configured to perform a self-test on each of the first fault detection circuit, the second fault detection circuit, and the first signal transmission path.

公开(公告)号：US20240322733A1

公开(公告)日：2024-09-26

申请号：US18693707

申请日：2021-11-12

申请人： Mitsubishi Electric Corporation

发明人： Shuzo AKIYAMA

IPC分类号： H02P29/024 ,  B62D5/04

CPC分类号： H02P29/024 ,  B62D5/046

摘要： An electronic control device includes a first and second power supply source circuits that are connected to first and second grounds, each generate a first and second voltage from output voltages of a first and second external power supply sources, with both being connected to a first and second ground as a reference respectively; a first circuit connected to the first ground the first voltage is input to; a second circuit connected to the second ground the second voltage is input to, and an isolator circuit provided between both circuits, where a first interface circuit having the first voltage input thereto is connected to the first ground and the first circuit, and a second interface circuit having the second voltage input thereto is connected to the second ground and the second circuit, and is electrically isolated from the first interface circuit.

公开(公告)号：US12068677B2

公开(公告)日：2024-08-20

申请号：US17887862

申请日：2022-08-15

申请人： DENSO CORPORATION

发明人： Kouichi Nishibata ,  Masanori Yamamura

IPC分类号： H02M1/084 ,  H02K11/20 ,  H02K11/33 ,  H02M7/537 ,  H02P27/06 ,  H02P29/024

CPC分类号： H02M1/084 ,  H02K11/20 ,  H02K11/33 ,  H02M7/537 ,  H02P27/06 ,  H02P29/024

摘要： In a control circuit for a power converter applicable to a system including a rotary electric machine, a fail-safe controller performs, in response to determination that there is a failure in the system, a short-circuit control routine that turns on predetermined turn-on arm switches, and turns off predetermined turn-off arm switches. The turn-on arm switches bare one of (i) upper-arm switches and (ii) lower-arm switches, and the turn-off arm switches are the other of (i) the upper-arm switches and (ii) the lower-arm switches. An on determiner detects a drive state of each turn-on arm switch upon determination that the turn-on is instructed for the corresponding turn-on arm switch, and determines, based on the drive state of each turn-on arm switch, whether the turn-on arm switches are switchable to be on in preparation for a short-circuit control routine performed by a short-circuit controller.

公开(公告)号：US12062900B2

公开(公告)日：2024-08-13

申请号：US17509928

申请日：2021-10-25

申请人： AUDI AG

发明人： Viktor Kell

IPC分类号： H02H3/00 ,  G01R19/165 ,  H02H1/00 ,  H02H3/08 ,  H02H9/08 ,  H02P29/024

CPC分类号： H02H1/0015 ,  G01R19/16571 ,  H02H3/08 ,  H02P29/024

摘要： A method detects an arc fault in an electrical circuitry. The electrical circuitry includes a controller, an energy storage and a plurality of loads each connected to the energy storage via a respective load path. A current measuring device determines current measurement values describing an energy storage current is assigned to the energy storage. Voltage measuring devices for determining voltage measurement values describing a load voltage at the respective load are assigned to said loads. The current measurement values and voltage measurement values are continuously transmitted to the controller via at least one communication link.

公开(公告)号：US20240258951A1

公开(公告)日：2024-08-01

申请号：US18564632

申请日：2022-06-10

申请人： Hitachi Industrial Equipment Systems Co., Ltd.

发明人： Zhiyuan LUO ,  Takahiro IKEDA ,  Satoshi IIMURO ,  Kenji TAKEDA

IPC分类号： H02P29/024

CPC分类号： H02P29/024

摘要： The servo system includes a servo motor, an encoder for detecting rotation information regarding the position and speed of the servo motor, and a servo amplifier for controlling the driving of the servo motor using the rotation information. The servo amplifier includes an encoder communication interface configured by hardware, a processor for calculating a control command to control the servo motor based on an operation command and the rotation information input through the encoder communication interface, and a control unit for controlling the driving of the servo motor based on the control command. Then, the processor compares the rotation information directly received from the encoder with the rotation information input through the encoder communication interface and diagnoses that there is a failure when both the pieces of rotation information do not match each other.

公开(公告)号：US20240250630A1

公开(公告)日：2024-07-25

申请号：US18561436

申请日：2022-03-24

申请人： MINEBEA MITSUMI Inc.

发明人： Kazuma TAKEZAWA

IPC分类号： H02P29/024 ,  H04L67/12

CPC分类号： H02P29/024 ,  H04L67/12

摘要： Failure prediction of a slave device mounted with a storage device having a small storage capacity is realized in a communication system. A communication system including a drive control device, a diagnostic device, and a network is provided. The drive control device includes a control information acquisition unit for acquiring control information for controlling driving of the motor from a higher-level device, a drive control unit for controlling driving of the motor in accordance with the control information, and a transmission unit for transmitting operation result information to the network, the operation result information including information about a drive amount of the motor and a step-out of the motor. The diagnostic device includes an information acquisition unit for acquiring the operation result information and the control information, a failure prediction unit for predicting a failure of the motor based on the operation result information and the control information.

公开(公告)号：US12040730B2

公开(公告)日：2024-07-16

申请号：US16880499

申请日：2020-05-21

申请人： The Boeing Company

发明人： Bradley J. Rafferty ,  Mary E. Beckman ,  Andrew Leung ,  Douglas C. Cameron

IPC分类号： H02P29/024 ,  B64C21/04 ,  B64C21/08 ,  B64D45/00

CPC分类号： H02P29/024 ,  B64C21/04 ,  B64C21/08 ,  B64D2045/0085 ,  B64D2221/00

摘要： Example active flow control systems and methods for aircraft are described herein. An example an active flow control system includes a plenum, a plurality of nozzles fluidly coupled to the plenum, configured to eject high pressure air across a control surface, a compressor to supply pressurized air to the plenum, an electric motor to drive the compressor, and a control system to determine an amount of power input to the electric motor, determine a current speed of the electric motor, and determine a fault has occurred in the active flow control system based on the current speed of the electric motor.