-
公开(公告)号：US12054209B2
公开(公告)日：2024-08-06
申请号：US17328905
申请日：2021-05-24
Applicant: Motional AD LLC
Inventor： Ning Wu , Hans Andersen , Francesco Seccamonte
CPC classification number: B62D6/04 , B62D1/283 , B62D5/0463 , B62D5/0475 , B62D15/025 , B60W2050/0024 , B60W2050/0075 , B60W2556/45 , B62D6/002
Abstract: Among other things, we describe techniques for electric power steering torque compensation. Techniques are provided for a method implemented by a computer, e.g., a computer onboard an autonomous vehicle. A planning circuit onboard the vehicle and connected to an EPS of the vehicle determines a compensatory torque signal to modify an actual steering angle of a steering wheel of the vehicle to match an expected steering angle of the steering wheel. The planning circuit transmits the compensatory torque signal to a control circuit that controls the steering angle of the steering wheel. The EPS modifies the actual steering angle based on the compensatory torque signal resulting in a modified steering angle. The control circuit operates the vehicle based on the modified steering angle.
-
公开(公告)号：US20240166256A1
公开(公告)日：2024-05-23
申请号：US18284440
申请日：2022-03-15
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Kengo TAMURA , Akihito NIBE
CPC classification number: B62D5/093 , B62D5/0475 , B62D5/063 , B62D5/075
Abstract: A steering apparatus for an industrial vehicle includes: a manual steering circuit which includes a first valve opened/closed according to an operation of a steering wheel and supplies hydraulic oil discharged from a hydraulic pump to a steering cylinder through the first valve; an automatic steering circuit which includes a second valve opened/closed according to a calculation result of automatic operation control and supplies the hydraulic oil discharged from the hydraulic pump to the steering cylinder through the second valve; and a branching valve which is disposed between the hydraulic pump and the first and second valves and branches the hydraulic oil to the manual steering circuit and the automatic steering circuit. The branching valve is a priority valve which preferentially supplies the hydraulic oil to the manual steering circuit at a designed flow rate equal to or larger than a predetermined flow rate for operating the steering cylinder.
-
公开(公告)号：US09650031B2
公开(公告)日：2017-05-16
申请号：US14254724
申请日：2014-04-16
Applicant: Ford Global Technologies, LLC
Inventor： Alex O'Connor Gibson , Allan Roy Gale , John Anthony DeMarco , Robert Michael Grant
CPC classification number: B62D5/04 , B60W10/06 , B60W10/08 , B60W10/20 , B60W10/30 , B60W20/00 , B60W30/18018 , B60W2510/0638 , B60W2710/0666 , B60W2710/0677 , B60W2710/202 , B60W2710/305 , B62D5/0463 , B62D5/0475 , B62D5/0481 , B62D6/08
Abstract: A method for supplying power to an electrically assisted steering system is described. In one example, the method adjusts alternator field current to increase energy supplied to the electrically assisted steering system in response to an automatic engine stop request. The method may improve operation of the electrically assisted steering system.
-
公开(公告)号：US09637167B2
公开(公告)日：2017-05-02
申请号：US14432933
申请日：2013-09-30
Applicant: NISSAN MOTOR CO., LTD.
Inventor： Shogo Miyasaka
CPC classification number: B62D5/0484 , B62D5/003 , B62D5/043 , B62D5/0433 , B62D5/0439 , B62D5/046 , B62D5/0475 , B62D5/0478 , B62D6/10
Abstract: To achieve a fail-safe fully utilizing the advantage of plural motors, a second controller performs a one-motor SBW mode when at least one of a first turning controller, a first turning motor and a torque sensor malfunctions in a state where the first turning controller and the second turning controller perform a two-motor SBW mode. Furthermore, the first controller performs a one-motor EPS mode when at least one of the second turning controller and the second turning motor malfunctions in the state where the first turning controller and the second turning controller perform a two-motor SBW mode.
-
公开(公告)号：US20140229067A1
公开(公告)日：2014-08-14
申请号：US14254724
申请日：2014-04-16
Applicant: Ford Global Technologies, LLC
Inventor： Alex O'Connor Gibson , Allan Roy Gale , John Anthony DeMarco , Robert Michael Grant
CPC classification number: B62D5/04 , B60W10/06 , B60W10/08 , B60W10/20 , B60W10/30 , B60W20/00 , B60W30/18018 , B60W2510/0638 , B60W2710/0666 , B60W2710/0677 , B60W2710/202 , B60W2710/305 , B62D5/0463 , B62D5/0475 , B62D5/0481 , B62D6/08
Abstract: A method for supplying power to an electrically assisted steering system is described. In one example, the method adjusts alternator field current to increase energy supplied to the electrically assisted steering system in response to an automatic engine stop request. The method may improve operation of the electrically assisted steering system.
Abstract translation: 描述了向电辅助转向系统供电的方法。 在一个示例中，该方法响应于自动发动机停止请求来调节交流发电机励磁电流以增加供应给电动辅助转向系统的能量。 该方法可以改善电辅助转向系统的操作。
-
Patent Agency Ranking
公开(公告)号：US08662242B2
公开(公告)日：2014-03-04
申请号：US13759258
申请日：2013-02-05
Applicant: JTEKT Corporation
Inventor： Tomonari Yamakawa , Satoshi Motoyama
IPC: B62D5/04
CPC classification number: B62D5/0475 , B62D5/008
Abstract: A variable transmission ratio mechanism is provided on an intermediate portion of a steering shaft, and is able to change a transmission ratio between a shaft on the steering wheel side and a shaft on the steered wheel side by transmitting the sum of rotation of the first shaft and rotation of a rotary shaft of a motor to the second shaft. The variable transmission ratio mechanism is provided with a lock mechanism that restricts the operation of the variable transmission ratio mechanism. When the fact that a rate of change in torque that acts on the steering shaft exceeds a predetermined rate is detected, a period of time until the torque that acts on the steering shaft reaches a torque determination value is estimated. On the condition that the estimated time is shorter than or equal to a predetermined period of time, the lock mechanism is activated.
Abstract translation: 可变传动比机构设置在转向轴的中间部分，并且能够通过传递第一轴的转动总和来改变方向盘侧的轴与转向轮侧的轴之间的传动比 并且将马达的旋转轴旋转到第二轴。 可变传动比机构设置有限制可变传动比机构的操作的锁定机构。 当检测到作用在转向轴上的转矩变化率超过预定速率的事实时，直到作用在转向轴上的转矩达到转矩确定值之前的时间被估计。 在预计时间短于或等于预定时间段的情况下，锁定机构被激活。
-
公开(公告)号：US08660751B2
公开(公告)日：2014-02-25
申请号：US12933785
申请日：2009-04-02
Applicant: Keisuke Izutani , Kazuyuki Yoshida
Inventor： Keisuke Izutani , Kazuyuki Yoshida
CPC classification number: B26D5/04 , B62D5/0457 , B62D5/0475 , H02J7/00 , H02P6/08
Abstract: An electric power steering apparatus comprises a charge-discharge circuit capable of configuring a circuit for charging an auxiliary power supply and a circuit for discharging a battery and the auxiliary power supply as well as configuring a discharge-preference circuit which enables only the discharge of the auxiliary power supply while avoiding the charge thereof. In the apparatus, a control circuit performs a power latch operation of carrying on control till the end of a predetermined period of time following an operation of turning off an ignition key, and also causes the charge-discharge circuit to configure the discharge-preference circuit thereby enabling steering assist accompanied by the discharge of the auxiliary power supply.
Abstract translation: 一种电动助力转向装置，其特征在于，具备能够构成用于对辅助电源进行充电的电路的充放电电路，以及用于对电池和辅助电源进行放电的电路，以及构成放电偏好电路， 辅助电源，同时避免其充电。 在该装置中，控制电路进行进行控制的电源锁存动作，直到关闭点火钥匙的操作之后的预定时间段结束，并且还使充放电电路构成放电偏好电路 从而能够伴随着辅助电源的放电而进行转向辅助。
-
公开(公告)号：US20110098889A1
公开(公告)日：2011-04-28
申请号：US12997967
申请日：2009-06-30
Applicant: Toshiaki Oya
Inventor： Toshiaki Oya
CPC classification number: B62D5/046 , B62D5/0457 , B62D5/0475 , H02P6/085
Abstract: In an electric power steering apparatus of the invention, a control circuit determines a command value of drive voltage supplied to a motor drive circuit based on an actual current through a motor and a target current. When the command value exceeds the previous value having a lower limit equivalent to a limit value representing the limit of the power supply from a battery, the control circuit controls the amount of discharge from the auxiliary power supply according to a difference between the command value and the previous value by increasing or decreasing a duty of switching devices. Thus, the power steering apparatus can save the energy of the auxiliary power supply for efficiently using the auxiliary power supply.
Abstract translation: 在本发明的电动助力转向装置中，控制电路基于通过电动机的实际电流和目标电流来决定供给电动机驱动电路的驱动电压的指令值。 当指令值超过前一个值时，其下限相当于表示来自电池的电源极限的极限值，控制电路根据指令值和指令值之间的差异控制辅助电源的放电量 通过增加或减少开关装置的占空比来改变先前的值。 因此，动力转向装置可以节省辅助电源的能量，以有效地使用辅助电源。
-
公开(公告)号：US07880411B2
公开(公告)日：2011-02-01
申请号：US12037593
申请日：2008-02-26
Applicant: Shigeki Nagase
Inventor： Shigeki Nagase
IPC: H02P1/00
CPC classification number: B62D5/0457 , B62D5/0475
Abstract: In a motor controller which supplies electric power to a motor of an electric power steering device from a main power supply and an auxiliary power supply, an N-channel MOS-FET is connected in parallel with a diode which is provided to prevent a sneak current from the auxiliary power supply to the main power supply. When electric power is supplied to the motor from the main power supply, the MOS-FET is turned on. Then, most of currents flow into the MOS-FET such that a power loss is reduced and a reduction in efficiency is prevented. The MOS-FET has high speed responsibility and excellent durability.
Abstract translation: 在从主电源和辅助电源向电动转向装置的电动机供给电力的电动机控制器中，N沟道MOS-FET并联连接到二极管，二极管被设置为防止潜行电流 从辅助电源到主电源。 当从主电源向电动机供电时，MOS-FET导通。 然后，大多数电流流入MOS-FET，从而降低功率损耗并且防止效率的降低。 MOS-FET具有高速度责任和优异的耐用性。
-
公开(公告)号：US07431677B2
公开(公告)日：2008-10-07
申请号：US11834919
申请日：2007-08-07
Applicant: Donald C Miller , David J Allen , Robert A Smithson
Inventor： Donald C Miller , David J Allen , Robert A Smithson
CPC classification number: B62D5/0475 , B62D5/0409 , B62M9/08 , F16H15/28 , F16H15/52 , F16H37/084 , F16H61/6649 , Y10S903/918 , Y10S903/945 , Y10S903/951 , Y10T74/19251 , Y10T74/19555 , Y10T74/1956 , Y10T477/23 , Y10T477/33 , Y10T477/619 , Y10T477/621 , Y10T477/679 , Y10T477/688
Abstract: A continuously variable planetary gear set is described having a generally tubular idler, a plurality of balls distributed radially about the idler, each ball having a tiltable axis about which it rotates, a rotatable input disc positioned adjacent to the balls and in contact with each of the balls, a rotatable output disc positioned adjacent to the balls opposite the input disc and in contact with each of the balls such that each of the balls makes three-point contact with the input disc, the output disc and the idler, and a rotatable cage adapted to maintain the axial and radial position of each of the balls, wherein the axes of the balls are oriented by the axial position of the idler.
-
-
-
-
-
-
-
-
-
Search Results
109
records
(took 0.023 seconds)
