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公开(公告)号：US20240250623A1
公开(公告)日：2024-07-25
申请号：US18624430
申请日：2024-04-02
Applicant: Black & Decker Inc.
Inventor： Jason D. MCKILLICAN , Sona R. MATHEW , Jason THRUSH , Alexander P. DAVIDSON
Abstract: A method of operating a power tool having a motor and a controller is provided. The method includes: receiving a speed signal from a variable-speed input mechanism mounted on the power tool; determining a target speed of the motor corresponding to the speed signal; controlling a supply of power to the motor based on the target speed; determining an underspeed threshold corresponding to at least one of the target speed or the speed signal; determining a rotational speed of the motor; and interrupting a supply of power to the motor if the rotational speed of the motor meets a criterion in relation to the underspeed threshold.
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公开(公告)号：US12047028B2
公开(公告)日：2024-07-23
申请号：US17122285
申请日：2020-12-15
Applicant: Snap-on Incorporated
Inventor： Michael Rajzer , Jason Genz
Abstract: A two-stage braking method for a brushless DC (BLDC) motor. The method includes control a switching array to drive the BLDC motor according to a commutation scheme to decrease a speed of the BLDC motor, allow the BLDC motor to coast, determine the speed of the BLDC motor, and actuate high side switches and/or low side switches to substantially stop rotational movement of the BLDC motor.
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公开(公告)号：US11973451B2
公开(公告)日：2024-04-30
申请号：US17739617
申请日：2022-05-09
Applicant: Black & Decker Inc.
Inventor： Jason D. McKillican , Sona R. Mathew , Jason Thrush , Alexander P. Davidson
Abstract: A method of operating a power tool having a motor and a controller is provided. The method includes: receiving a position of a variable-speed input mechanism mounted on the power tool; determining a target speed of the motor corresponding to the position of the variable-speed input mechanism; determining an underspeed threshold corresponding to the target speed; determining a rotational speed of the motor; and interrupting a supply of power to the motor if the rotational speed of the motor is less than the underspeed threshold.
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公开(公告)号：US20240092190A1
公开(公告)日：2024-03-21
申请号：US18519788
申请日：2023-11-27
Applicant: Textron Innovations Inc.
Inventor： Arthur James Harvey , Norman R. Padgett , John Ledden , Robert Charles Bradley , Patrick Dwaine Warden
CPC classification number: B60L53/00 , B60L1/00 , B60L7/12 , B60L53/50 , B60L58/10 , B60R16/033 , H02P1/022 , H02P3/06 , B60L2240/80 , B60L2250/26 , H02J9/005
Abstract: Techniques control a utility vehicle. Such techniques involve storing electric power in a lithium battery of the utility vehicle. Such techniques further involve operating a motor controller of the utility vehicle in a normal mode in which the motor controller provides electric power from a lithium battery of the utility vehicle to an electric motor of the utility vehicle to turn one or more ground engaging members of the utility vehicle. Such techniques further involve, after operating the motor controller in the normal operating mode, operating the motor controller in a walkaway mode in which the motor controller configures the electric motor to provide braking torque.
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公开(公告)号：US20240067296A1
公开(公告)日：2024-02-29
申请号：US18494240
申请日：2023-10-25
Applicant: LiveWire EV, LLC
CPC classification number: B62K11/00 , B60L7/10 , B60L50/60 , B62K23/04 , B62L3/02 , B62L3/04 , B62M7/04 , H02P3/06 , B60L2200/12 , B62K2204/00
Abstract: Systems and methods for generating a virtual torque for an electric motor of a motorcycle. One method includes detecting a position of a drive torque control included in the motorcycle, detecting a position of a regenerative brake control included in the motorcycle, mapping the detected position of the drive torque control to a requested driving torque, mapping the position of the regenerative brake control to a requested braking torque, determining, with an electronic control unit, a torque command based on the requested driving torque and the requested torque, and transmitting the torque command to an electric motor included in the motorcycle.
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Patent Agency Ranking
公开(公告)号：US11839957B2
公开(公告)日：2023-12-12
申请号：US17215572
申请日：2021-03-29
Applicant: Nanjing Chervon Industry Co., Ltd.
Inventor： Pengchen Wang
CPC classification number: B25B21/002 , H02P3/06
Abstract: An intelligent electric tool includes an output shaft, a motor, a transmission assembly, an adjustment assembly, a detection unit, and a controller. The output shaft outputs torsion. The motor drives the output shaft to rotate. The transmission assembly connects the motor to the output shaft. The adjustment assembly adjusts an operating mode of the intelligent electric tool, where the operating mode includes at least a metal mode. The detection unit detects a current value of the intelligent electric tool in operation. The controller determines a first detection value and a second detection value according to the current value of the intelligent electric tool in operation and control, according to the first detection value and/or the second detection value, the motor to stop rotating to control the intelligent electric tool to stop.
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公开(公告)号：US20230192445A1
公开(公告)日：2023-06-22
申请号：US17998867
申请日：2021-05-28
Applicant: TK Home Solutions B.V.
Inventor： Paul KASBERGEN , Cornelis Boxum , Bert Blokzijl
Abstract: Disclosed is a safety system for a stairlift. The Safety system comprises a component for sending and receiving an electromagnetic signal that includes a light emitting device such as an LED and a light receiving device such as a photo resistor, an electromagnetic signal interrupter like a movable vane, a moveable activator, and a processor. The activator is configured to be moved by a user of the stairlift, which in turn causes the signal interrupter to interrupt a first electromagnetic signal.
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公开(公告)号：US11581829B2
公开(公告)日：2023-02-14
申请号：US17523688
申请日：2021-11-10
Applicant: Aptiv Technologies Limited
Inventor： Mateusz Romaszko , Piotr Maj
IPC: H02P3/06 , G01R19/165 , H02P29/00
Abstract: The pinch detector is suitable to detect a pinch at a closing member actuated by a motor equipped with a measuring circuit to measure a motor current. It includes a first portion that, when the motor starts closing the member, obtains a reference value of the motor current measured at the end of a blind time period having a predetermined duration from the moment the motor starts to close the member; a second portion that compares current values of the measured motor current to a threshold value depending on said reference value, during a detection time period, following the blind time period and preceding a steady state time period of the motor, in order to detect a pinch at the closing member based on a comparison result.
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公开(公告)号：US11573647B1
公开(公告)日：2023-02-07
申请号：US17028385
申请日：2020-09-22
Applicant: Amazon Technologies, Inc.
Inventor： Hua Wang , Yi Li , Abhay Gupta , Ehsan Omidi , Shichang Liu , Kevin Zhang , Sanket Parikh , Anchit Rastogi
Abstract: Techniques for controlling operations of a motor based on position errors are described. In an example, a user device sends an amount of electrical current to the motor to cause the motor to move. The user device also determines the motor is in position for a time interval despite the amount of electrical current. Based at least one the time interval and the amount of electrical current, the user device determines a position difference associated with a target position and a measured position of the motor during the time interval, and reduces the amount of electrical current based at least in part on the time interval.
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公开(公告)号：US11427090B2
公开(公告)日：2022-08-30
申请号：US16103426
申请日：2018-08-14
Applicant: Bell Helicopter Textron Inc.
Inventor： Eric Albert Sinusas
Abstract: An exemplary method includes controlling a rotation rate of a rotor in a vehicle, detecting that an electric motor system is electrically energized and rotating the rotor at least at a minimum rotation rate that is greater than zero in response to the electric motor system being electrically energized. The rotor may be rotated at least at the minimum rotation rate when the electric motor system is energized and the motor is turned-off.
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