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公开(公告)号：US12051987B2
公开(公告)日：2024-07-30
申请号：US17557664
申请日：2021-12-21
CPC分类号： H02P5/50
摘要： A system for controlling a plurality of motors includes: a variable frequency drive (VFD) configured to control at least one property of the motors, the VFD having a current interruption rating that is greater than a continuous current rating of all of the plurality of motors combined; a bus electrically connected to the VFD; and a plurality of protection modules, each protection module including: a motor overload device electrically connected to a particular one of the plurality of motors; and a switching relay in series with the motor overload device, the switching relay configured to connect the protection module to and disconnect the protection module from the bus. A state of the switching relay determines whether the protection module is electrically connected to the bus, the VFD is configured to control the state of the switching relay, and the switching relay has a current interruption rating that is less than the continuous current rating of the particular one of the plurality of motors.
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公开(公告)号：US20240235436A1
公开(公告)日：2024-07-11
申请号：US18559700
申请日：2022-03-04
申请人： Hitachi Astemo, Ltd.
发明人： Masashi SEKIYA
IPC分类号： H02P5/46
CPC分类号： H02P5/46
摘要： Provided is a highly reliable in-vehicle control device that controls driving of a plurality of loads, the in-vehicle control device being capable of suppressing heat generation caused by a ripple current of an electronic component constituting the in-vehicle control device. The in-vehicle control device includes: a plurality of load drive circuits; a microcontroller that transmits control signals to the plurality of load drive circuits; a determination unit that determines whether OFF timings of the control signals transmitted to the plurality of load drive circuits, respectively, match; a time change unit that changes the OFF timings based on a determination result of the determination unit, so that the OFF timings do not match; a control unit that sets load drive information from drive states of loads and corrects the set load drive information based on a change result of the time change unit; and a waveform generation unit that generates control signals to be transmitted to the plurality of load drive circuits based on the load drive information corrected by the control unit.
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公开(公告)号：US12032391B2
公开(公告)日：2024-07-09
申请号：US16860723
申请日：2020-04-28
IPC分类号： G05D1/00 , B64C27/00 , B64C39/02 , B64D1/12 , B64D27/24 , B64D45/00 , B64U10/00 , B64U10/13 , B64U30/20 , B64U50/19 , B64U101/60 , F16P3/14 , G06V20/13 , G06V20/17 , G08G5/00 , G08G5/02 , G08G5/04 , H02P5/46 , H02P5/68 , H02P101/30
CPC分类号： G05D1/106 , B64C27/006 , B64C39/024 , B64D1/12 , B64D27/24 , B64D45/00 , F16P3/14 , G05D1/0055 , G05D1/0833 , G06V20/13 , G06V20/17 , G08G5/0021 , G08G5/0069 , G08G5/025 , G08G5/045 , H02P5/46 , H02P5/68 , B64U10/00 , B64U10/13 , B64U30/20 , B64U50/19 , B64U2101/60 , H02P2101/30
摘要： An aerial vehicle and system for automatically detecting an object (e.g., human, pet, or other animal) approaching the aerial vehicle is described. When an approaching object is detected by an object detection component, a safety profile may be executed to reduce or avoid any potential harm to the object and/or the aerial vehicle. For example, if the object is detected entering a safety perimeter of the aerial vehicle, the rotation of a propeller closest to the object may be stopped to avoid harming the object and rotations of remaining propellers may be modified to maintain control and flight of the aerial vehicle.
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公开(公告)号：US11757382B2
公开(公告)日：2023-09-12
申请号：US17086961
申请日：2020-11-02
申请人： Volocopter GmbH
发明人： Sebastian Mores , Benjamin Kirsch
IPC分类号： H02P5/46 , B64D27/24 , H02P29/024 , B64D45/00 , B64U30/20
CPC分类号： H02P5/46 , B64D27/24 , H02P29/024 , B60L2200/10 , B60L2220/42 , B64D2045/0085 , B64U30/20
摘要： A motor control system (1), preferably for an aircraft, having a plurality of motors (3), each having a motor control unit (2) that includes a primary motor controller (COM) configured to provide motor control commands (9) to a corresponding motor (3). The system (1) also has a system control unit (COMstring) in communication with each of the primary motor controllers (COM), configured to provide motor control commands (9) to the primary motor controllers. A system monitoring unit (MONstring) is connected to the system control unit for monitoring an operation thereof, and at least one sensor (4) determines an operation state of at least one of the motors. The sensor is connected with the system monitoring unit, which is configured to disable communication between the system control unit and the primary motor controllers and/or between the primary motor controllers and the motors based on the monitoring and/or the determined operation state.
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公开(公告)号：US11679874B2
公开(公告)日：2023-06-20
申请号：US16844098
申请日：2020-04-09
申请人： Volocopter GmbH
发明人： Burak Yuksel
IPC分类号： B64C39/02 , B64D31/10 , H02P29/028 , H02P101/30 , H02P5/46 , B64U10/13
CPC分类号： B64C39/024 , B64D31/10 , H02P5/46 , H02P29/028 , B64U10/13 , H02P2101/30
摘要： A method of controlling an overly determined actuator system that has a first number of actuators (αi) which is greater than a second number of the actuators needed to perform a predetermined physical task. The method includes: automatically controlling the first number of actuators by a control unit (CU) for jointly performing the predetermined physical task; repeatedly checking a functional state of the first number of actuators to detect an actuator failure of any one thereof; in case of any detected actuator failure, generating at least one emergency signal (EM) representative of an adapted physical task to be performed by a remaining number of the actuators. The emergency signal is generated based on kinematics of the actuator system, on known physical capacities at least of the remaining actuators, and optionally on a computational performance model of the actuator system. The adapted physical task includes activating each of the remaining actuators below a predetermined threshold of maximum physical load on a respective actuator and activating the ensemble of remaining actuators in a way to prevent further damage to the actuator system. An emergency control system and an aircraft are also provided.
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公开(公告)号：US20220194210A1
公开(公告)日：2022-06-23
申请号：US17692815
申请日：2022-03-11
申请人： DENSO CORPORATION
发明人： Yuki TAKAHASHI
摘要： In a wheel drive apparatus, a clutch is configured to switch a coupling mode between a first rotating shaft of a first rotating electrical machine and a second rotating shaft of a second rotating electrical machine to any one of (i) a power transmission mode in which power transmission is enabled between the first rotating shaft and the second rotating shaft; and (ii) a power interruption mode in which power transmission is interrupted between the first rotating shaft and the second rotating shaft.
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公开(公告)号：US11233469B2
公开(公告)日：2022-01-25
申请号：US16803215
申请日：2020-02-27
摘要： A system for controlling a plurality of motors includes: a variable frequency drive (VFD) configured to control at least one property of the motors, the VFD having a current interruption rating that is greater than a continuous current rating of all of the plurality of motors combined; a bus electrically connected to the VFD; and a plurality of protection modules, each protection module including: a motor overload device electrically connected to a particular one of the plurality of motors; and a switching relay in series with the motor overload device, the switching relay configured to connect the protection module to and disconnect the protection module from the bus. A state of the switching relay determines whether the protection module is electrically connected to the bus, the VFD is configured to control the state of the switching relay, and the switching relay has a current interruption rating that is less than the continuous current rating of the particular one of the plurality of motors.
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公开(公告)号：US11117558B2
公开(公告)日：2021-09-14
申请号：US16645114
申请日：2018-09-28
申请人： ADVICS CO., LTD.
摘要： This vehicle brake device comprises: a simultaneous driving determination section which determines whether it is necessary to simultaneously drive an upstream-side motor and a downstream-side motor; and a PWM control section which, when the determination result by the simultaneous driving determination section is in the affirmative, changes the duty ratio of the PWM signal to be output to the upstream-side motor so as to be smaller than when the determination result by the simultaneous driving determination section is in the negative, and uses PWM control to drive the upstream-side motor.
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公开(公告)号：US11025180B2
公开(公告)日：2021-06-01
申请号：US16093005
申请日：2016-06-15
摘要： A variable speed accelerator is provided, including an electric driving device generating a rotational driving force, and a planetary gear transmission device changing the speed of the rotational driving force and transmitting the changed rotation driving force to a driving target. The electric driving device includes: a variable-speed motor having a variable-speed rotor connected to a variable-speed input shaft of the transmission device; and a constant-speed motor having a constant-speed rotor connected to a constant-speed input shaft of the transmission device. The variable-speed rotor and the planetary gear carrier shaft have a shaft insertion hole formed to pass therethrough in the axial direction.
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公开(公告)号：US20210006193A1
公开(公告)日：2021-01-07
申请号：US16982697
申请日：2018-04-27
IPC分类号： H02P29/028 , H02P5/46 , H02P27/06 , H02H7/122 , H02M1/32 , B60L3/00 , B60L50/51 , H02P23/14 , H02P6/28 , H02K11/33
摘要： A rotating machine power conversion device is obtained which achieves operational continuation in a rotational speed range in which the operational continuation is enabled, even when a single phase of an electrical power conversion device made of switching devices causes a disconnection or turn-off failure. The rotating machine power conversion device comprises: a normality-case/abnormality-case current control device selection device for transferring between a normality-case current control device and an abnormality-case current control device in accordance with a determination result of an abnormality determination device; and an abnormality-case current control device/power conversion halt device selection device, using a rotational speed calculation device, for transferring between the abnormality-case current control device used when a rotational speed is lower than that being prespecified, and the power conversion halt device used when a rotational speed is higher than that being prespecified.
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