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公开(公告)号：US20240364183A1
公开(公告)日：2024-10-31
申请号：US18765878
申请日：2024-07-08
发明人： Steven R. Huard , Travis J. Anderson , Kevin B. Henke , Joseph L. Dobmeier , John P. Blomberg , Justin O. Byers
摘要： An example electric motor includes a housing, a stator fixed relative to the housing, a rotor, a brake assembly, a first bearing, and a second bearing. The rotor has a hub portion, a cylindrical portion, and a disk portion. The hub portion of the rotor has a first end, a second end, and a through-hole therethrough. The brake assembly is fixed relative to the housing and configured to selectively couple the disk portion of the rotor to the housing. The first bearing is mounted between the first end of the hub portion of the rotor and the disk portion of the rotor. The second bearing is mounted between the second end of the hub portion of the rotor and the disk portion of the rotor.
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公开(公告)号：US20240186918A1
公开(公告)日：2024-06-06
申请号：US18282620
申请日：2022-02-21
摘要： In a method for providing a voltage for a load, e.g., for an inductor and/or coil of an electromagnetically actuable brake, e.g., of an electric motor, and device for carrying out the method, e.g., in a manner repeated over time, the positive half-wave of an, e.g., single-phase AC voltage is provided to the load in a pulse—with modulated manner starting from a first phase angle of the AC voltage, and in an unmodulated manner, e.g., and/or uncontrolled manner and/or directly, starting from a second phase angle.
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3.发明公开公开(公告)号：US20240166177A1
公开(公告)日：2024-05-23
申请号：US18282611
申请日：2022-03-07
申请人： Hitachi Astemo, Ltd.
CPC分类号： B60T8/172 , B60T8/171 , B60T13/588 , B60T13/746 , H02P3/04 , B60T13/145
摘要： In an application, which refers to holding actuation of a parking brake mechanism (a rotation-linear motion conversion mechanism), a braking control apparatus (a parking brake control apparatus) determines an application stroke from a load detection point including as far as an overshoot amount. The load detection point is a generation point of a thrust force that is detected due to a current flowing in the electric motor. The overshoot amount is generated based on a rotation of an electric motor due to inertia after driving of the electric motor is stopped. The braking control apparatus determines a target release stroke in a release, which is release actuation of the parking brake mechanism, according to the application stroke. The braking control apparatus outputs a control instruction to conduct the release based on the target release stroke.
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公开(公告)号：US11305652B2
公开(公告)日：2022-04-19
申请号：US17028545
申请日：2020-09-22
发明人： Won Ki Park
摘要： A regenerative braking control system for a motor-driven vehicle is configured to provide a continuous assistant braking force by continuous reverse torque of an electric motor by enabling surplus electrical energy produced by an electric motor to be easily converted into thermal energy in generative braking, using both of a brake resistor and a heater to convert electrical energy into thermal energy, and being able to obtain an interior heating effect by using thermal energy converted by the brake resistor and the heater as heat source for interior heating without discharging the thermal energy to the outside.
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公开(公告)号：US11248673B2
公开(公告)日：2022-02-15
申请号：US16057970
申请日：2018-08-08
发明人： Andrew Kirby , James A. Cooke
IPC分类号： H02P3/04 , H02P7/025 , H02P3/16 , H02P15/00 , F16D66/00 , F16D59/02 , F16D65/28 , F16D63/00 , H02P3/06 , G01D11/16 , F16D121/20 , F16D121/18 , G05B19/406 , G05B19/416 , F16D121/22 , F16D125/64 , F16D127/02 , F16D129/04
摘要： A method for controlling a braking system of an electromagnetic motor, the electromagnetic motor having a moveable output shaft, comprising the steps of: receiving a velocity signal and/or an acceleration signal based on movement of the output shaft, said velocity signal and/or acceleration signal having a respective frequency spectrum; identifying an event from the velocity and/or the acceleration signal using the respective frequency spectrum, wherein said event corresponds to an uncontrolled movement of the output shaft and has a characteristic frequency spectrum.
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公开(公告)号：US11245350B2
公开(公告)日：2022-02-08
申请号：US16324644
申请日：2017-06-26
发明人： Christoph Adam , Olaf Budig , Hartmut Frank , Andre Jansen , Olaf Koerner
IPC分类号： H02P29/032 , H02K7/00 , H02K7/10 , H02K7/102 , B60L13/00 , B60L15/20 , B61C3/00 , H02P3/04 , H02K1/27 , H02K11/25
摘要： An electrical machine has a braking element and a release device. A rotor of the electrical machine includes the braking element and release device. The electrical machine is located, for example, in a rail vehicle. In order to brake the rotor of the electrical machine in the event of an error in the drive train, an overload torque is generated by the electrical machine. An overload clutch is triggered by the overload torque.
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公开(公告)号：US11005391B2
公开(公告)日：2021-05-11
申请号：US16525155
申请日：2019-07-29
发明人： Tomohiro Oki
IPC分类号： H02P3/04 , H02M7/5387 , F16D65/16 , H02M7/48 , H02P15/00
摘要： A drive circuit for an electromagnetic brake is used in a circuit including a motor, a converter converting a DC voltage into an AC voltage to be generated between a pair of DC link buses, and an inverter converting the DC voltage into an AC voltage and driving the motor. A full-bridge circuit has a pair of power supply terminals connected to the pair of DC link buses, and a pair of output terminals connected to the electromagnetic brake.
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公开(公告)号：US10780988B2
公开(公告)日：2020-09-22
申请号：US14491215
申请日：2014-09-19
发明人： Daniel Buchmueller , Brian C. Beckman , Amir Navot , Brandon William Porter , Gur Kimchi , Jeffrey P. Bezos , Frederik Schaffalitzky
IPC分类号： B64D31/06 , B64C11/00 , B64C39/02 , B64D27/24 , G08G5/04 , F16D43/00 , F16P3/00 , H02P3/10 , H02P3/04 , B64D45/00 , B64D1/12
摘要： An automated aerial vehicle (AAV) and system for automatically detecting a contact or an imminent contact between a propeller of the AAV and an object (e.g., human, pet, or other animal) are described. A safety profile for the AAV may be selected based on various factors including a position or configuration of the AAV. When a contact or an imminent contact is detected, the selected safety profile may be executed to reduce or avoid any potential harm to the object and/or the AAV. For example, if a contact with a propeller of the AAV by an object is detected, the rotation of the propeller may be stopped to avoid harming the object. Likewise, an object detection component may be used to detect an object that is nearing a propeller, stop the rotation of the propeller, and/or navigate the AAV away from the detected object.
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公开(公告)号：US20200177112A1
公开(公告)日：2020-06-04
申请号：US16639650
申请日：2018-08-23
申请人： LINAK A/S
摘要： A linear actuator (1) comprises a spindle nut arranged to be moved between two end positions on a spindle driven by a DC motor (2). An end stop switch (31) is arranged to be activated when the spindle nut is in an end position. In its activated state, the end stop switch disconnects the motor current and connects a first diode (33) across the DC motor for short circuiting the motor when the current is interrupted. A second diode (32) is connected over the end stop switch for enabling the DC motor to drive the spindle nut out of said end position. An additional component (43) in series with the first diode reduces noise problems caused by motor current circulating through this diode during pulse pauses while the spindle nut is driven out of an end position by a pulse width modulated voltage via a cable from a control box.
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公开(公告)号：US10663365B2
公开(公告)日：2020-05-26
申请号：US15717117
申请日：2017-09-27
摘要： A motor assembly and method for measuring brake backlash using onboard components of the motor assembly. The method includes engaging a brake of the motor assembly, applying torque to an output shaft of the motor assembly in first and second rotational directions and measuring a difference in angular position of the output shaft using a position feedback device of the motor to calculate brake backlash.
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