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公开(公告)号:US12132360B2
公开(公告)日:2024-10-29
申请号:US17894281
申请日:2022-08-24
申请人: MAKITA CORPORATION
发明人: Itsuku Kato
IPC分类号: H02P1/00 , A01G20/47 , H02J7/00 , H02K11/33 , H02P3/00 , H02P5/00 , H02P6/08 , H02P6/20 , H02P6/24
CPC分类号: H02K11/33 , A01G20/47 , H02J7/0024 , H02J7/0044 , H02J7/0045 , H02P6/08 , H02P6/20 , H02P6/24
摘要: An electric work machine includes a motor, a first connector, a second connector, an energizing circuit, a manual switch, and a controller. The controller electrically disconnects the first connector from the motor based on a first voltage value below a first threshold at a start of motor rotation. The controller maintains an electrical connection of the first connector to the motor based on the first voltage value below the first threshold and equal to or greater than a second threshold during discharge of the first battery.
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公开(公告)号:US12122051B2
公开(公告)日:2024-10-22
申请号:US17411856
申请日:2021-08-25
发明人: David Bitterolf , Hartmut Linke , Fabian Erik Lorz
IPC分类号: H02P6/08 , B25J9/16 , G05B19/416
CPC分类号: B25J9/1664 , B25J9/1605 , B25J9/1607 , G05B19/416 , H02P6/08
摘要: The movement of a machine element of a machine that can be driven via a shaft with the aid of a motor can be guided by specifying a setpoint guidance variable describing a desired movement process of the machine element for the actuation of the motor and determining an actual pilot variable and/or an actual guidance variable from the setpoint guidance variable by subjecting the setpoint guidance variable to a digital path model which simulates the dynamic behavior of the machine element and the motor. The digital path model is parameterized by the total moment of inertia and the poles and zeros of the transfer function of the mechanical system consisting of motor, shaft and machine element.
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公开(公告)号:US12119768B2
公开(公告)日:2024-10-15
申请号:US17889315
申请日:2022-08-16
发明人: Jung Mo Yu , Yong Jae Lee , Hyun Jae Lim , Young Ho Chae , Young Kwan Ko , Jang Yoon Jeong
摘要: A motor driving apparatus driving a motor including a plurality of windings corresponding to each of phases, includes a mode change switch and a plurality of inverters that operate the motor in a closed end winding mode or an open end winding mode; and a controller configured for controlling the mode change switch and the plurality of inverters according to a first mode determination result based on a reverse magnetic flux and a second mode determination result according to an output power limit for each mode.
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公开(公告)号:US20240333179A1
公开(公告)日:2024-10-03
申请号:US18620626
申请日:2024-03-28
CPC分类号: H02P6/085 , B25B21/00 , G05B13/042
摘要: A power including a housing, a motor, a motor drive circuit, a trigger, and an electronic controller. The motor is located within the housing and is coupled to an output member. The trigger is configured to generate a trigger signal related to an activation of the trigger. The electronic controller is configured to receive the trigger signal from the trigger. The trigger signal corresponds to a first amount of activation of the trigger. The electronic controller is also configured to determine a magnitude of a characteristic associated with the first amount of activation of the trigger and modify the trigger signal based on the magnitude of the characteristic. The modified trigger signal corresponds to a second amount of activation of the trigger. The second amount of activation of the trigger is different than the first amount of activation of the trigger.
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公开(公告)号:US12105115B2
公开(公告)日:2024-10-01
申请号:US17015698
申请日:2020-09-09
发明人: Stephen Paul Linder , Damir Klikic
摘要: A system for monitoring a fan used to cool equipment includes memory storing controller-executable instructions, and a controller configured to execute the instructions, which cause the controller to operate a fan, perform a deceleration test on the fan to obtain deceleration test data, calculate a variance of the deceleration test data, make a determination that the fan is susceptible to imminent failure based on the variance, and generate a signal for the equipment to enter a low-heat producing mode based on the determination.
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公开(公告)号:US20240322715A1
公开(公告)日:2024-09-26
申请号:US18734428
申请日:2024-06-05
发明人: Hong BIN , Kai ZHANG , Xiaoan ZHAO , Haijin YANG
摘要: A single-resistor measurement method, a motor control method, a controller, and a control system are provided. A direct-current bus current flowing through a single sampling resistor is obtained. When a lower tube of a phase bridge arm is switched on, a switch-on current is determined based on the direct-current bus current, and an on-tube voltage drop is obtained. A switch-on resistance is determined based on the switch-on current and the on-tube voltage drop. A three-phase current outside a current measurement dead zone is determined based on the direct-current bus current. A three-phase current inside the current measurement dead zone is determined based on the on-tube voltage drop and the switch-on resistance. A three-phase feedback current of the motor is determined based on the three-phase current outside the current measurement dead zone and the three-phase current inside the current measurement dead zone.
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公开(公告)号:US12095403B2
公开(公告)日:2024-09-17
申请号:US18014410
申请日:2021-07-06
申请人: IRP NEXUS GROUP LTD
发明人: Paul Price , Shmuel Ben Yaakov
CPC分类号: H02P6/182 , H02P6/085 , H02P27/085
摘要: Circuitry for directly providing drive power to a BLDC motor having separated coils, comprising unipolar controlled current sources for supplying current to each of the separated coils; a controller, for controlling the level and phase of the unipolar controlled current sources; a polarity switch for converting the unipolar current to a bipolar (AC) current, supplied to the separated coils. The controller is adapted to shape the current being fed to the BLDC motor by the current source via the polarity switch, to be in phase with the back EMF sensed on the separated coils, and of a magnitude that corresponds to a required torque.
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公开(公告)号:US20240305225A1
公开(公告)日:2024-09-12
申请号:US18658498
申请日:2024-05-08
发明人: Daisuke FUKUDA , Noriaki EMURA
摘要: A motor driving device includes: a rotor position detector that detects a rotor position of the motor; a first waveform generator that generates a first reference waveform based on the rotor position; a second waveform generator that generates a second reference waveform based on the rotor position, the second reference waveform being different from the first reference waveform; a waveform outputter that outputs, as an output waveform, the first reference waveform, the second reference waveform, or a composite waveform of the first reference waveform and the second reference waveform, based on the torque command value; and a current supplier that supplies, to the motor, a motor current generated based on the output waveform. In the motor driving device, the waveform outputter changes a composite ratio between the first reference waveform and the second reference waveform in the composite waveform, according to the torque command value.
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公开(公告)号:US12074544B2
公开(公告)日:2024-08-27
申请号:US17847925
申请日:2022-06-23
申请人: INTEVA PRODUCTS, LLC
摘要: A ripple circuit includes a sensor, and oscillator circuit and a logic gate. The sensor monitors operation of a motor that is powered by a power signal provided by a motor circuit. The sensor outputs a data signal having a first state or a second state based on the operation of the motor. The oscillator circuit generates an oscillating signal having a fixed frequency. The logic gate includes at least one input in signal communication with the sensor and the oscillator circuit and at least one output in signal communication with the motor circuit. The logic gate selectively outputs the oscillating signal based on the first state or the second state of the data signal to generate a modulated signal. The logic gate is configured to deliver the modulated signal to the motor circuit.
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公开(公告)号:US12074503B2
公开(公告)日:2024-08-27
申请号:US18222894
申请日:2023-07-17
发明人: Joshua Thurnbauer Cirillo , Philip Helwig , Sie Teong Lim , Mark Thomas Molinski , Kenny Jalmas Stair , Robert Townsend , Jeffrey H. Whitmore , Svetlana Byaliy
IPC分类号: H02K7/18 , F02B63/04 , F02B69/04 , F02P5/15 , H02K5/22 , H02K9/06 , H02K13/12 , H02P1/12 , H02P6/08 , H02P9/00 , H02P9/04 , H02P27/06 , H02P101/25
CPC分类号: H02K7/1815 , F02B63/042 , F02B63/044 , F02B69/04 , F02P5/1506 , H02K5/22 , H02K9/06 , H02K13/12 , H02P1/12 , H02P6/08 , H02P9/009 , H02P9/04 , H02P27/06 , F02B2063/045 , F02B2201/064 , H02P2101/25
摘要: A generator includes an internal combustion engine including an engine block including a cylinder including a piston, a crankshaft configured to rotate about a crankshaft axis in response to movement by the piston, and a spark plug configured to periodically generate a spark to ignite fuel in the cylinder to control the movement of the piston. The generator further includes an alternator including a rotor and a stator, the rotor configured to rotate with the rotation of the crankshaft to generate alternating current electrical power, a controller configured to control a rate of fuel supply to the internal combustion engine, and a switch configured to selectively enable the flow of a first type of fuel into the cylinder and disable the flow of a second type of fuel, wherein the controller is configured to receive an indication of a fuel type based on a position of the switch.
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