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公开(公告)号：US11958544B2
公开(公告)日：2024-04-16
申请号：US17056517
申请日：2018-07-13
发明人： Tatsuya Mori , Yu Hirotani
CPC分类号： B62D5/0463 , B62D1/286 , H02P5/74
摘要： A control device for an electric power steering device includes an inverter converting direct current voltage into alternating current voltage, and apply to a synchronous motor; and a controller for converting three-phase current flowing in the synchronous motor into d-axis and q-axis currents, performing proportional integral control for a deviation between q-axis current command and the q-axis current so that the q-axis current follows the q-axis current command, to calculate q-axis voltage command, performing proportional integral control to calculate d-axis voltage command, converting the d-axis and q-axis voltage commands into three-phase voltage command, and controlling the inverter based on the three-phase voltage command. A q-axis proportional gain used in the proportional integral control for the q-axis current is obtained using a time constant of a q-axis current control system, a q-axis or d-axis inductance, and a constant greater than zero and less than one.
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公开(公告)号：US11952059B2
公开(公告)日：2024-04-09
申请号：US17409091
申请日：2021-08-23
发明人： Yusuke Otsuka , Takashi Kodera , Toru Takashima
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , B62D5/0481
摘要： A steering control device is configured to control a steering system including a turning mechanism that includes a motor configured to generate a motor torque that serves as power for moving a turning shaft to turn turning wheels of a vehicle. The steering control device includes a control unit configured to control a target control value serving as a target of a control value for controlling the motor torque of the motor. The control unit is configured to perform compensation for the target control value; acquire an offset value; and change the target control value such that the acquired offset value decreases gradually.
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公开(公告)号：US11952055B1
公开(公告)日：2024-04-09
申请号：US18286751
申请日：2022-01-21
发明人： Byung Ki Oh , Jae Geun Bang
CPC分类号： B62D5/0418 , B62D5/04 , B62D7/18
摘要： The present invention provides an electric independent steering apparatus comprising: a first knuckle having one end coupled to the lower end of a strut part, and including an upper support part extending and protruding outwardly from the one end and a lower support part extending and protruding from the other end so as to face the upper support part; a second knuckle which is rotatably disposed on the lower support part inside the first knuckle, has a motor installed therein, and has a driving wheel coupled to the outside thereof; and a harmonic gear which is disposed so as to be rotatable from the upper support part and relatively rotates from the first knuckle together with the second knuckle.
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公开(公告)号：US11951938B2
公开(公告)日：2024-04-09
申请号：US17471106
申请日：2021-09-09
发明人： Jung Suk Ko , Sung Ho Jang , Seung Young Park , Hyeon Hee Jeong
IPC分类号： B60R25/02 , B60R25/0215 , B62D5/04
CPC分类号： B60R25/0215 , B62D5/046
摘要： A steering wheel locking control apparatus may include: a power supply switch configured to receive power from a battery when an ignition switch of a vehicle is turned off; and a switch unit connected to a motor, turned on when power is received through the power supply switch, and configured to lock a steering wheel through a closed circuit formed by shorting phases of the motor.
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公开(公告)号：US11945518B2
公开(公告)日：2024-04-02
申请号：US17052963
申请日：2019-05-30
申请人： Hitachi Astemo, Ltd.
发明人： Hiroshi Fujita , Hirotoshi Uchibori
CPC分类号： B62D5/001 , B62D1/04 , B62D1/16 , B62D5/0454
摘要： A steer-by-wire steering device includes a first member, a second member, and stoppers. The first member is rotatable together with the input shaft, and includes a first protrusion protruding from the input shaft in the radial direction. The second member includes a second protrusion protruding on the trajectory of the first protrusion, and is rotatable together with the first member with the first protrusion being abutting the second protrusion. The stoppers are provided at respective positions capable of abutting on the trajectory of the second protrusion only when the second member is rotated by the first member.
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公开(公告)号：US11942823B2
公开(公告)日：2024-03-26
申请号：US17271711
申请日：2019-08-27
申请人： LG INNOTEK CO., LTD.
发明人： Tae Ho Kim
摘要： An embodiment relates to a motor comprising: a shaft; a rotor coupled to the shaft; and a stator disposed on the outside of the rotor, wherein the stator comprises a stator core, an insulator disposed on the stator core, and a coil wound around the insulator, and the stator core is formed by arranging a plurality of unit stator cores in the circumferential direction, and a welded portion is formed by welding regions where unit yokes of the unit stator cores meet each other on the upper side and the lower side of the stator core. Accordingly, cogging torque and torque ripple of the motor may be reduced.
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公开(公告)号：US11939010B2
公开(公告)日：2024-03-26
申请号：US16709162
申请日：2019-12-10
发明人： Prerit Pramod , Michael A Eickholt , David P. Holm , Rakesh Mitra
CPC分类号： B62D5/0487 , B62D3/126 , B62D6/002 , B62D15/0225
摘要： A method for vehicle stabilization includes, in response to a determination that a fault occurred in a rear steering mechanism, identifying a fault type associated with the fault. The method also includes determining whether a position of a rack of the rear steering mechanism is controllable based on the fault type. The method also includes, in response to a determination that the position of the rack is controllable, selectively positioning the rack to a center position and holding, using a motor control system of the rear steering mechanism, the rack in the center position. The method also includes, in response to a determination that the position of the rack is not controllable, holding, using the motor control system of the rear steering mechanism, the rack in a current position.
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公开(公告)号：US20240097585A1
公开(公告)日：2024-03-21
申请号：US18463546
申请日：2023-09-08
CPC分类号： H02P5/753 , B62D5/006 , B62D5/0409 , H02K7/1166
摘要： A dual motor drive assembly comprising a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, first and second motor circuits, each motor circuit including a motor having an output driving a respective output gear, the output gears being engaged with the first gear, a control circuit adapted to allocate independent torque demands to each of the first and second motors to cause a net torque to be applied to the shaft comprising the sum of the torques applied by the two motors, and a processing circuit adapted to estimate the level of load independent mechanical friction of the system by applying torque demands to the two motors.
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公开(公告)号：US11936309B2
公开(公告)日：2024-03-19
申请号：US17795576
申请日：2020-05-22
发明人： Yuya Tsuchimoto , Tatsuya Mori , Akira Furukawa , Isao Kezobo , Genki Fujii
CPC分类号： H02P21/0089 , H02P21/22 , B62D5/046 , H02P2207/05
摘要： A permanent-magnet-synchronous electric motor control device includes: a reference voltage value calculation unit for calculating a reference voltage value; an output voltage value calculation unit for calculating an output voltage value on the basis of a voltage command; a current weakening command calculation unit for calculating a current weakening command on the basis of the reference voltage value and the output voltage value; a voltage command calculation unit for calculating the voltage command on the basis of the current weakening command; and a power converter for supplying power to a permanent-magnet-synchronous electric motor on the basis of the voltage command. The current weakening command calculation unit calculates the current weakening command in which a high-frequency component is amplified on the basis of the difference between the reference voltage value and the output voltage value.
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公开(公告)号：US20240083495A1
公开(公告)日：2024-03-14
申请号：US18513682
申请日：2023-11-20
申请人： HL MANDO Corporation
发明人： DU HAN LEE , SU-MIN LEE
CPC分类号： B62D5/0493 , B62D1/181 , B62D1/187 , B62D5/003 , B62D5/0484
摘要： The disclosure relates to a steering system and a method for controlling the same. According to an embodiment, a steering system comprises an electric power steering (EPS) steering motor connected to a first inverter and a second inverter, an additional motor connected to the second inverter and providing a steering-related additional function, a main electric control unit (ECU) including the first inverter and controlling the EPS steering motor through the first inverter, and a sub ECU including the second inverter and controlling at least one of the EPS steering motor or the additional motor based on at least one of main ECU state information or vehicle driving state information.
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