With Electric Power Assist Patents (Class 180/443)
  • Patent number: 11452257
    Abstract: A method of mowing an area with an autonomous mowing robot comprises storing, in non-transient memory of the robot, a set of geospatially referenced perimeter data corresponding to positions of the mowing robot as the mowing robot is guided about a perimeter of an area to be mowed, removing from the set of perimeter data one or more data points thereby creating a redacted data set and controlling the mowing robot to autonomously mow an area bounded by a boundary corresponding to the redacted data set, including altering direction of the mowing robot at or near a position corresponding to data in the redacted data set so as to redirect the robot back into the bounded area.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: September 27, 2022
    Assignee: iRobot Corporation
    Inventors: Brian Yamauchi, Andrew Beaulieu, Paul C. Balutis
  • Patent number: 11453402
    Abstract: The present disclosure relates to a method for determining the fatigue of a driver of a motor vehicle, wherein the fatigue is determined while taking into account the steering behavior of the driver, characterized in that the method includes the following steps: determination of a hysteresis of the steering system or the fatigue detection system, and taking into account the detected hysteresis in the determination of the fatigue of the driver. Furthermore, the disclosure relates to a device that is set up to execute the method.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 27, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Benedikt Stiller, Matthias Rupp, Stefan Hoefle, Valentin Loeffelmann
  • Patent number: 11436925
    Abstract: Embodiments of the present invention provide apparatus for monitoring one or more target objects in an environment external to a host vehicle by means of at least one sensor, the apparatus being arranged to trigger at least one action responsive to the detection of prescribed relative movement between the host vehicle and the one or more target objects, wherein the apparatus is arranged to monitor one or more control inputs of the vehicle and to over-ride triggering of the at least one action such that triggering of the at least one action is not performed in the event that a prescribed movement of one or more of the control inputs is detected.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: September 6, 2022
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventors: Mark Cund, Simon Gilling, Paul Widdowson
  • Patent number: 11435474
    Abstract: A vehicle environment detection system (40) in an ego vehicle (1), including a sensor arrangement (4) and a main control unit (8) is arranged to detect and track at least one oncoming vehicle (9), and to determine whether the ego vehicle (1) has entered a curve (17). When this is the case. The main control unit (8) is arranged to, determine an ego direction (21) along which the ego vehicle (1) travels with a corresponding ego direction angle (?ego) with respect to a predetermined axis (xglob), determine a measured oncoming direction (18) of the tracked oncoming vehicle (9) with a corresponding oncoming angle (?track, glob) with respect to the predetermined axis (xglob) during a plurality of radar cycles, determine a difference angle (?) between the measured oncoming direction (18) and the ego direction (21), and compare the difference angle (?) with a threshold angle (?max), and to determine that the oncoming vehicle (9) is crossing if the difference angle (?) exceeds the threshold angle (?max).
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: September 6, 2022
    Assignee: Arriver Software AB
    Inventors: Michael Maas, Andreas Schmid, Christopher Unverdorben
  • Patent number: 11411516
    Abstract: A vehicle includes an electric machine having a number of pole pairs, N, a position sensor having a number of pole pairs, M, that generates output indicative of a rotational position of the electric machine, and one or more controllers. The one or more controllers generate a remapped rotational position according to a product of the rotational position and L/N, generate a scaled position according to a product of the remapped rotational position and N/M, and command the electric machine to produce a specified torque or speed based on the scaled position. M is not equal to and not a factor of N, and L is a minimum common multiplier of N and M.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: August 9, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Silong Li, Jiyao Wang, Michael W. Degner
  • Patent number: 11407443
    Abstract: An electric drive device includes a motor housing including a housing end face part opposite to an output part of a rotating shaft of an electric motor. The housing end face part includes a power conversion circuit part heat dissipation section and a power supply circuit part heat dissipation section formed to allow at least generated heat of the power conversion circuit part and the power supply circuit part to be transferred to the motor housing. A sensor magnet is fixed to an end part of the rotating shaft opposite to the output part of the rotating shaft and structured to constitute a rotation-sensing target part for sensing rotation of the rotating shaft. The power conversion circuit part heat dissipation section of the housing end face part is positioned closer to the electric motor than the sensor magnet.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: August 9, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventor: Keiji Hamada
  • Patent number: 11390317
    Abstract: A disclosed method can control an electric motor for an electromechanical power steering mechanism for assisting steering for a motor vehicle. The electromechanical power steering mechanism may include a steering column with an upper steering shaft linked to a lower steering shaft by a torsion bar. A torsion angle between the upper steering shaft and the lower steering shaft is configured to be measured or estimated, and an electric motor is configured to apply an assistance torque. The method may involve calculating a desired rotor position with an assist algorithm based on the torsion angle and calculating a PWM pattern by a PWM control unit such that the calculated PWM pattern adjusts a rotor of an electric motor angle such that the torsion angle is decreased.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: July 19, 2022
    Assignees: THYSSENKRUPP PRESTA AG, THYSSENKRUPP AG
    Inventors: Ádám Varga, Gábor Kalapos, Márton Helli, Csaba Fazekas
  • Patent number: 11374462
    Abstract: A Brushless Direct-Current (BLDC) motor is provided for a power tool, including a stator comprising a coil, a rotor configured to rotate with respect to the stator, terminals secured to the stator, and a sensor circuit mount attached to the stator. The sensor circuit mount defines a plane having a first side and a second side, the sensor circuit mount including Hall sensors mounted on the first side of the plane of the sensor circuit mount facing the stator. Power-supply lines are secured to the terminals to supply electric current to the coil, the power-supply lines being routed from the terminals without traversing the second side of the plane of the sensor circuit mount. The sensor circuit mount is attached to the stator by at least one fastener that extends through an opening of the sensor circuit mount and a receptacle of the stator.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: June 28, 2022
    Assignee: Black & Decker Inc.
    Inventors: Eric E. Hatfield, Earl M. Ortt
  • Patent number: 11370478
    Abstract: A drive part, in particular, a steering system for a transportation vehicle, having an electric motor and at least one control device, wherein the electric motor has at least one winding, wherein the winding has connection points for a power electronics system of the at least one control device, wherein the drive component has at least one sensor system for detecting fluid, wherein the sensor system has an evaluation and control unit connected to the connection points of the at least one winding, wherein the evaluation and control unit generates a test signal and detects a change in impedance.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: June 28, 2022
    Inventor: Dirk Dreyer
  • Patent number: 11358628
    Abstract: An apparatus for controlling an MDPS system may include: a column torque sensor configured to sense column torque applied to a steering column of a vehicle; a vehicle velocity sensor configured to sense vehicle velocity of the vehicle; an MDPS basic logic unit configured to decide a first assist command current for driving an MDPS motor in a manual driving mode of a driver; an autonomous driving control unit configured to decide a second assist command current for driving the MDPS motor in an autonomous driving mode of the vehicle; and a mode switching control unit configured to decide a weight into which the driver's steering intention is reflected, and apply the decided weight to the first and second assist command currents to decide a final assist command current for driving the MDPS motor when the vehicle is switched from the autonomous driving mode to the manual driving mode.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: June 14, 2022
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Tae Hong Kim
  • Patent number: 11355989
    Abstract: An embodiment relates to a bus bar comprising a main body; an upper terminal which is disposed on an upper surface of the main body; and a lower terminal which is disposed on a lower surface of the main body, wherein the upper terminal includes a first upper terminal and a second upper terminal, the lower terminal includes a first lower terminal, the main body includes a first hole and a second hole which penetrate the main body, and the first lower terminal has one end which is connected to the first upper terminal through the first hole and the other end which is connected to the second upper terminal through the second hole and to a motor comprising the same. According to this, space utilization inside the motor can be improved.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 7, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Il Hwan An, Beom Seok Kang
  • Patent number: 11349379
    Abstract: A motor comprises: a shaft; a rotor coupled to the shaft and including a magnet; a stator disposed outside the rotor and including a coil and a stator core; a cover disposed on an upper side of the rotor; and a magnetic sensor disposed between the cover and the rotor, wherein the magnetic sensor is disposed on an upper side of the magnet, a surface of the magnetic sensor facing the rotor is disposed below the uppermost end of the coil, and the length of the rotor in the shaft direction is longer than the length of the stator core in the shaft direction.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: May 31, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Hyun Shik Cho, Hye Yeong Byeon
  • Patent number: 11345399
    Abstract: The present disclosure provides for a steering control method and a steering control system for self-driving of a vehicle. The method comprises the steps of: obtaining information about an expected steering angle of a vehicle based on an automatic planning control operation; detecting whether an effective torque is applied to a steering wheel by a driver; and when it is detected that the driver has applied the effective torque to the steering wheel, computing a difference between a turning angle of the steering wheel controlled by the driver and the expected steering angle of a vehicle, and determining a self-driving intent prompt torque according to the difference between the two, wherein the self-driving intent prompt torque is to be applied to a steering system.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: May 31, 2022
    Assignee: UISEE TECHNOLOGIES (BEIJING) LTD
    Inventors: Yan Jiang, Jinzhan Peng, Xin Zhou, Dan Zhang, Xiaocheng Zhou, Sai Luo
  • Patent number: 11312412
    Abstract: Provided is an electric assisted power steering apparatus having a structure able to disconnect a worm shaft from any malfunctioning motor of motors connected to opposite end portions of the worm shaft, thereby preventing the worm shaft from rotating heavily or failing to rotate. Even in the case in which the worm shaft is disconnected from the malfunctioning motor, a target rotation speed of the properly-operating motor is increased to prevent sudden changes in auxiliary torque occurring on a steering shaft, thereby promoting the safety of a driver. Torque required for the worm shaft is distributed to the two motors, thereby increasing the rotation speeds of the motors and reducing the size and fabrication costs of the motors.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: April 26, 2022
    Assignee: MANDO CORPORATION
    Inventor: Tae Sik Kim
  • Patent number: 11292506
    Abstract: A vehicle steering assembly comprises a steering member with a rack portion having rack teeth, a pinion gear having pinion teeth configured to be engaged with the rack teeth, a yoke support assembly supporting the steering member in a housing, and a ball nut operatively connected to the steering member. The pinion gear divides the steering member into a first side having the yoke support assembly outboard of an area of engagement of the rack and pinion teeth and a second side having the ball nut. The yoke support assembly includes complementary convex and concave bearing surfaces configured to provide relative rotation between the convex and concave bearing surfaces. The yoke assembly also includes a spring member configured to produce a variable rate spring force to maintain an engagement between the rack and pinion teeth.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: April 5, 2022
    Assignee: ZF Active Safety and Electronics US LLC
    Inventors: Mark Bugosh, Brian A. Urbach
  • Patent number: 11285991
    Abstract: An electromagnetic damping system for a steering system includes a pinion gear having a pinion shaft and engaged with a steering rack. The electromagnetic damping system also includes a friction disk operatively coupled to the pinion shaft. The electromagnetic damping system further includes an electromagnetic clutch located adjacent the friction disk, the electromagnetic clutch disposed in a spaced position relative to the friction disk in a first condition of the electromagnetic clutch, the electromagnetic clutch disposed in a contact position relative to the friction disk in a second condition of the electromagnetic clutch to damp the rate of movement of the steering rack.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: March 29, 2022
    Assignee: Steering Solutions IP Holding Corporation
    Inventor: David P. Holm
  • Patent number: 11260898
    Abstract: A steering system for a vehicle includes a drive motor having a motor shaft. The steering system also includes a first gear reduction stage for receiving a first rotational input from the motor shaft and providing a first rotational output. The steering system further includes a second gear reduction stage for receiving the first rotational output from the first gear reduction stage and providing a second rotational output. The second gear reduction stage may include at least one of a strain wave gearing, a worm drive, and a planetary gearing. The steering system includes an output shaft for receiving the second rotational output from the second gear reduction stage.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 1, 2022
    Assignee: Tesla, Inc.
    Inventor: Mark Kaufman
  • Patent number: 11247718
    Abstract: An electric steering column device includes a column housing, and a first shaft, a connection shaft and a second shaft provided in the column housing. The connection shaft is movable in an axial direction of the first shaft and the second shaft and is connected to the first shaft and the second shaft so as to rotate together with the first shaft and the second shaft. The first and second shaft are connected to the connection shaft so that the first shaft always rotates at the same rotation speed and that a rotation speed of the second shaft is varied depending on whether or not the connection shaft moves in the axial direction. The device is capable of securing an optimized steering performance by adjusting steering responsibility of a steering wheel depending on a driving state of the vehicle.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: February 15, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Sang Woock Ryu
  • Patent number: 11214299
    Abstract: An automatic steering control device for a vehicle includes: a steering angle change amount detector; a vehicle behavior detector; a disturbance determinator; and a counter torque applying processor. The steering angle change amount detector detects a steering angle change amount that acts on a steered wheel; the vehicle behavior detector detects a yaw change amount that acts on the vehicle; the disturbance determinator determines a disturbance that acts on the vehicle, based on the steering angle change amount and the yaw change amount; and the counter torque applying processor applies a counter torque for suppressing the yaw change amount on the electric power steering motor, when it is determined by the disturbance determinator that the steering angle change amount is within an allowable steering angle change range and the yaw change amount is outside an allowable yaw change range.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: January 4, 2022
    Assignee: SUBARU CORPORATION
    Inventors: Eiichi Shiraishi, Satoru Akiyama
  • Patent number: 11208142
    Abstract: A steering feel control apparatus of an MDPS may include: a release steering detection unit configured to detect release steering using column torque or motor current; a reverse steering detection unit configured to detect reverse steering using a steering angular velocity or motor angular velocity; a compensation gain detection unit configured to detect a compensation gain using the steering angular velocity or the motor angular velocity; a high frequency input unit configured to filter the column torque or the motor current and input a high frequency; and a compensation gain compensation unit configured to apply the compensation gain detected by the compensation gain detection unit to the high frequency inputted by the high frequency input unit, when release steering is detected by the release steering detection unit or reverse steering is detected by the reverse steering detection unit.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: December 28, 2021
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Tae Hong Kim
  • Patent number: 11193793
    Abstract: The invention relates to a sensor system (1), and a method for determining an absolute rotation angle (?) of a shaft (10) with a rotation angle range of more than one revolution and to a vehicle fitted with a sensor system (1), wherein the sensor system (1) has a main rotor (2) that can be connected rotationally synchronously to the shaft (10), a first auxiliary rotor (3) which is mechanically coupled to the main rotor (2), a second auxiliary rotor (4) mechanically coupled to the main rotor (2), a first sensor device (SE1) which is assigned to the first auxiliary rotor (3) for generating a first sensor signal dependent on a rotation angle of the first auxiliary rotor (3), a second sensor device (SE2) which is assigned to the second auxiliary rotor (4) for generating a second sensor signal dependent on a rotation angle of the second auxiliary rotor (4), a third sensor device (SE3) which is assigned to the main rotor (2) and which is used for generating a third sensor signal dependent on a relative rotation ang
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: December 7, 2021
    Assignee: Valeo Schalter und Sensoren GmbH
    Inventors: Landry Tandjeu-Tchuissi, Onofrio Intini
  • Patent number: 11192581
    Abstract: A vehicle steering system includes a steering actuator which acts on steered wheels, an actuation unit, a feedback actuator to which a user request for a steering angle can be applied using a steering input means, which outputs a feedback signal to the steering input means in response to the request and a driving state of the vehicle. A signal transmission transfers the request to the actuation unit. The actuation unit actuates the steering actuator to deflect the wheels. When a monitor detects a malfunction of the feedback actuator as a fault situation, the feedback signal and the signal transmission is modified or generated according to multiple options.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 7, 2021
    Assignees: THYSSENKRUPP PRESTA AG, THYSSENKRUPP AG
    Inventor: Kristof Polmans
  • Patent number: 11192416
    Abstract: An adjustment device (1) for a chassis of a motor vehicle. The adjustment device has an actuator (2) with a housing (5) and a spindle drive, which has an axially displaceable spindle (10), with a fixed mounting (7) on the vehicle side and a connecting element (4) on the chassis side. The spindle (10) is extended in a direction of its longitudinal axis by an extension piece (11), and the connecting element (4) is attached to the outer end (11b) of the extension piece (11).
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: December 7, 2021
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Jochen Spiegelberg, Marc Maroncelli, Sören Bökelheide, Carina Nieberding, Mark Rotary
  • Patent number: 11180132
    Abstract: A control device includes an electronic control unit. The electronic control unit is configured to perform autonomous driving of a vehicle to autonomously control at least a vehicle speed so that the vehicle speed follows a preset target vehicle speed; store a relationship between the vehicle speed and noise that is generated by a vehicle part rotated in association with running of the vehicle; determine, based on the relationship, whether the noise is equal to or larger than a preset determination threshold when the vehicle runs at the target vehicle speed; and when the electronic control unit determines that the noise is equal to or larger than the determination threshold, determine a vehicle speed at which the noise is lower than the determination threshold, and change the target vehicle speed to the vehicle speed at which the noise is lower than the determination threshold.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: November 23, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Katsushi Nakayama, Satoru Takahashi, Hiroyuki Tateno
  • Patent number: 11180185
    Abstract: A method and system for controlling motor driven power steering are provided. The system includes a magnetic field generation detection module that detects generation of a magnetic field upon operating an electric part of a vehicle and a torque offset determination unit that determines whether a temporary torque offset has occurred in a torque to be applied to a motor based on a detection signal of the magnetic field generation detection module. A torque offset correction unit then corrects the torque offset to a normal torque range based on a torque offset correction logic in response to determining that the torque offset has occurred.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: November 23, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: In Kwon Choi
  • Patent number: 11180191
    Abstract: A method for unintended steering mitigation includes receiving at least one hand wheel measurement correspond to a hand wheel of a vehicle. The method also includes determining a hand wheel return value corresponding to the at least one hand wheel measurement. The method also includes receiving a torque value corresponding to propulsion of the vehicle. The method also includes determining whether the torque value is above a threshold. The method also includes, in response to a determination that the torque value is above the threshold adjusting the hand wheel return value based on the torque value and selectively controlling return of the hand wheel based on the adjusted hand wheel return value.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: November 23, 2021
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Xinfu (Kaiser) Xu, Young Jaepil Chang
  • Patent number: 11152841
    Abstract: A driving device includes a motor and a control unit for controlling of the motor. The motor includes a motor body and an end cap assembly disposed at one end of the motor body. The motor body comprises a stator, a rotor rotatable relative to the stator, and a motor shaft fixed to and rotated with the rotor. The end cap assembly is provided with two brushes. The control unit includes two connectors for connecting with an external power source. The two brushes are respectively electrically connected to the connectors through the control unit. Lengths of connecting routes of the two brushes to the corresponding connectors are substantially equal to each other.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 19, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Qingbin Luo, Guihong Tian, Xinpeng Wei, Binwei Li, Yueju Zhao
  • Patent number: 11142234
    Abstract: A steering column assembly includes a steering shaft, a shroud, a support bracket and a clamping mechanism which clamps the shroud to the bracket. When the clamping mechanism is unclamped, the clamping mechanism permits the shroud to pivot about the pivot assembly to enable the steering column assembly to be adjusted for rake. The pivot assembly further includes a sleeve, a ring shaped busing, and a set of circumferentially arranged spacer members. The ring-shaped bushing defines a set of circumferentially spaced resilient members that each define a contact surface that contacts one of the sleeve and the bore. The spacer members are arranged alternately with the resilient members around the whole or a substantial part of the bushing.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: October 12, 2021
    Inventor: Phil Harvey
  • Patent number: 11139809
    Abstract: A driving apparatus includes a current output unit, a reference voltage output unit, a comparator, and a drive control unit. The current output unit is switchable to either a first ON resistance or a second ON resistance that is N times (N>1) the first ON resistance. The reference voltage output unit outputs a fist reference voltage during a large current time period, and outputs a second reference voltage that is M times (M>1) the first reference voltage during a small current time period. The drive control unit performs control to perform switching to the first ON resistance during the large current time period, and to perform switching to the second ON resistance during the small current time period.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: October 5, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Akira Fujita
  • Patent number: 11097770
    Abstract: An electric power steering apparatus including a torque sensor to detect a steering torque and a motor control unit to control a motor that applies an assist torque to a steering system of a vehicle, including: a function to switch a control system of the motor between a torque control system to control a motor output torque and a position/speed control system to control a steering angle of a steering in accordance with a predetermined switching trigger. The fade processing time from the torque control system to the position/speed control system and the fade processing time from the position/speed control system to the torque control system are individually set.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: August 24, 2021
    Assignee: NSK LTD.
    Inventors: Ryo Minaki, Takayoshi Sugawara, Hideki Sawada
  • Patent number: 11091192
    Abstract: Cost of a precision farming guidance system is driven in part by the number of discrete system elements installed in a tractor including the steering actuator, guidance computer, user terminals, and the associated cable harnesses. An integrated guidance system arranges and integrates these separate elements into a base chassis and removable computer module to reduce cost and complexity while retaining flexibility to adapt to different vehicle configurations and to incorporate improved guidance computer technology into a common design platform.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: August 17, 2021
    Assignee: AGJUNCTION LLC
    Inventors: Michael Brett McMickell, Mark Alan Villela, Thomas R. Kreider, Jonathan L. Baker, Andreas F. Ramm
  • Patent number: 11091194
    Abstract: A motor vehicle has an electrically assisted steering system. A steering angle velocity of the motor vehicle, and a driver manual torque change applied by a driver of the motor vehicle are determined. At least the steering angle velocity and the driver manual torque change are analyzed to determine whether the driver manual torque change and the steering angle velocity are not correlated. An error signal is output if the driver manual torque change and the steering angle velocity are not correlated.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: August 17, 2021
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Simon Nolden, Jens Dornhege, Stephan Klein, Goetz-Philipp Wegner
  • Patent number: 11077876
    Abstract: A method for controlling a power steering system utilizes a vehicle having a motor, a controller coupled to the motor, and a steering assembly. The method includes detecting a steering rate using the controller and determining a vehicle speed. A base level steering damping is computed using the steering rate and the vehicle speed. At least one approximate vehicle acceleration is determined. A steering torque of the steering assembly is sensed through a torque sensor configured to sense the steering torque of the steering assembly. Moreover, a user torque is determined using the torque sensor. A damping boost is computed using the user torque and the at least one approximate vehicle acceleration. A final steering damping gain is determined using the base level steering damping and the damping boost. The final steering damping gain is applied to the steering assembly to minimize unwanted feedback to the steering assembly.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: August 3, 2021
    Assignee: Kongsberg Inc.
    Inventors: Francis Gagné, Nicolas Girard, Simon Bédard, Alexandre Frigon
  • Patent number: 10994776
    Abstract: A vehicle steering apparatus that obtains the appropriate steering torque to the steering angle without being affected by road surface state and changes of mechanical characteristics of the steering system due to aging. The steering apparatus includes a target steering torque generating section to generate a target steering torque, a converting section to convert the target steering torque into a target torsional angle, and a torsional angle control section to calculate a motor current command value so as to follow-up a torsional angle to the target torsional angle. The target steering torque generating section includes an offset correcting section to obtain the first torque signal from a characteristic depending on the set steering angle based on an offset value of the steering torque and outputs the first torque signal as a target steering torque. The steering apparatus drives and controls the motor based on the motor current command value.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: May 4, 2021
    Assignee: NSK LTD.
    Inventors: Takahiro Tsubaki, Hiroyasu Kumagai
  • Patent number: 10985628
    Abstract: Provided is an electric drive device capable of achieving redundant supply of power from outside and achieving downsizing. An electric drive device, including: a motor; a controller configured to control driving of the motor; and a power supply connector electrically connected to the controller, the power supply connector including: a power supply connector housing; and a first power supply terminal and a second power supply terminal, which are provided in the power supply connector housing and electrically connected to separate external power sources, respectively.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: April 20, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideya Nishikawa, Yoshihito Asao
  • Patent number: 10974762
    Abstract: A damping control method of steering system may include determining, by a controller, a basic damping value based on a vehicle velocity, a steering angular velocity, and an output value of a steering motor when it is determined that steering for restoring a steering wheel to a steering angle neutral position is to be performed; determining, by the controller, whether a driver is in a hand-off state in which the driver takes its hands off the steering wheel according to signals reflecting a steering state and a behavior of a vehicle; compensating, by the controller, for the basic damping value so that the basic damping value is increased and determining a final damping value when it is determined that the driver is in the hand-off state; and controlling, by the controller, the steering motor with the final damping value obtained by the compensation, and restoring and steering the steering wheel.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 13, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Young Uk Park
  • Patent number: 10946895
    Abstract: A vehicle control system is provided, which includes a steering angle detector configured to detect a steering angle of a steering wheel by the operator, the steering wheel is mounted on the vehicle, a speed detector configured to detect a traveling speed of the vehicle, a reaction-force generator configured to generate a reaction force of the steering wheel, and a controller. The controller includes a processor configured to execute a lateral acceleration calculating module to calculate a lateral acceleration based on the traveling speed and the steering angle, a rigidity characteristic setting module to set the reaction force so that a rigidity value that is a ratio of the reaction force to the steering angle increases as the lateral acceleration increases, and a reaction-force control module to control the reaction-force generator so that the reaction force becomes the reaction-force value set by the rigidity characteristic setting module.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: March 16, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Masao Inoue, Naoki Yamada, Yoshihisa Okamoto, Kazuhiro Takemura
  • Patent number: 10951147
    Abstract: A regulator may include an output element and an electric motor for driving the output element. The electric motor may have a rotor. A mechanical power transmission device may be located between the rotor of the electric motor and the output element. A rotor position sensor for determining a position of the rotor may be included. A multi-turn sensor may also be included, where the multi-turn sensor is configured to monitor rotation of at least one of the rotor and a rotating element of the mechanical power transmission device.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: March 16, 2021
    Assignee: ZF Friedrichshafen AG
    Inventors: Stefan Herzog, Martin Herrmann
  • Patent number: 10933913
    Abstract: An apparatus for estimating a steering angle of MDPS including: a motor of an MDPS, corresponding to rotation of a steering wheel; an amplifier configured to amplify a specific level of counter electromotive force to a preset level and output the amplified voltage, the specific level of counter electromotive force being generated by the motor when the steering wheel is manually operated; a switch configured to be turned on by the amplified voltage outputted from the amplifier; a power supply configured to be turned on by the switch and supply power to the MDPS; and a control unit of the MDPS configured to be driven by the supplied power and estimate a steering angle of the steering wheel, which is manually operated.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: March 2, 2021
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Ji Hoon Yoo
  • Patent number: 10924039
    Abstract: A motor control device for controlling a servomotor to axially move a movement target object includes: a speed detector for detecting the movement speed of the movement target object; an abnormality detector for detecting an abnormality of the speed detector; a motor controller for performing deceleration control on the servomotor to decelerate the movement target object, upon detection of the abnormality; a reference speed generator for generating a reference speed that decreases with passage of time, based on the movement speed when the movement target object decelerates and a predetermined deceleration; a speed monitor for monitoring the movement speed and determining whether or not the movement speed is equal to or greater than the reference speed; and a brake controller for actuating a brake for braking axial movement of the movement target object when the movement speed is determined to be equal to or greater than the reference speed.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: February 16, 2021
    Assignee: FANUC CORPORATION
    Inventors: Ryoutarou Tsuneki, Satoshi Ikai
  • Patent number: 10908609
    Abstract: An apparatus for autonomous driving includes data collecting devices and processing circuitry. The data collecting devices collects initial data including first data related to a driving condition that includes a driving environment surrounding a vehicle and motion of the vehicle and second data related to driving the vehicle under the driving condition. The processing circuitry determines, based on the initial data, the driving environment and a vehicle driving mode including a first type of driving environment and a respective autonomous driving mode and an off-road driving environment and a respective non-autonomous driving mode. The data collecting devices collect additional data including first data related to the driving condition and second data related to driving the vehicle under the driving condition when the vehicle driving mode is the non-autonomous driving mode, and trains the vehicle to implement autonomous driving under the off-road driving environment based on the additional data.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: February 2, 2021
    Assignee: TOYOTA RESEARCH INSTITUTE, INC.
    Inventors: Nikolaos Michalakis, Julian M. Mason
  • Patent number: 10901019
    Abstract: A battery pack monitoring apparatus is provided. The apparatus includes a voltage measurement system configured to couple to opposed ends of each of a plurality of blocks of a battery pack and to measure voltages thereof, the blocks being coupled in series by interconnects each having an interconnect resistance. The voltage measurement system is configured to derive an internal resistance of each of the plurality of blocks based upon the voltages of the opposed ends of each of the plurality of blocks and based upon a measurement of current of the battery pack and derive the interconnect resistance of each of the interconnects based upon the voltages of the opposed ends of each of the plurality of blocks and based upon the measurement of current.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 26, 2021
    Assignee: Atieva, Inc.
    Inventors: Richard J. Biskup, Sam Chang
  • Patent number: 10886865
    Abstract: A motor controller that controls a motor including two windings includes a calculator to compute a current instruction value to drive the motor, a first motor driver to supply a first current to one of the windings based on the current instruction value, a second motor driver to supply a second current to the other of the windings based on the current instruction value, a first current detector to detect the first current supplied to the motor from the first motor driver, and a second current detector to detect the second current supplied to the motor from the second motor driver. The calculator supplies a first forced current to the first motor driver, and a second forced current in opposite phase of the first forced current to the second motor driver to determine an abnormality of the first current detector and/or the second current detector.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: January 5, 2021
    Assignee: NIDEC ELESYS CORPORATION
    Inventor: Takeshi Arai
  • Patent number: 10873234
    Abstract: A closure system for a seat of an electric motor adapted for housing a rotor of the electric motor, which is allowed to provide a perfect and resistant sealing of the seat, without the need to apply a resin near the lid. when the lid is at least partially inserted into the seat of the rotor, an annular gasket is disposed in contact between the lid and the seat, one end of the main body of a retaining element, which faces the opening, elastically presses against the central portion of the lid, and an opposite radially protruding end of the tabs of the retaining element, elastically presses against the seat, to prevent the removal of the lid from the seat.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 22, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Marco Mastrototaro, Valerio Baravalle, Luca Gallace
  • Patent number: 10864937
    Abstract: When detecting an abnormality in a portion related to control of an electric motor, a CPU that calculates a control amount for controlling the electric motor calculates a control amount different from a control amount at a normal time so as to continue the control of the electric motor and changes a threshold value for detecting the abnormality to a value different from a value at a normal time.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: December 15, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Munenori Yamamoto, Akihiko Mori, Jun Suzumura
  • Patent number: 10864941
    Abstract: An electric power steering apparatus includes: a current command value determining section that determines a current command value based on steering torque and vehicle speed; a vibration extracting filter that extracts a first vibration component having a predetermined amplitude and first predetermined frequency range depending on motor angular velocity; a vibration extracting section that extracts a second vibration component having a second predetermined frequency range depending on motor angular acceleration; a first compensation value calculating section that calculates a first vibration suppression compensation value based on the first vibration component extracted by the vibration extracting filter; and a second compensation value calculating section that calculates a second vibration suppression compensation value based on the second vibration component; and suppresses vibrations of the motor by feeding back the first vibration suppression compensation value and the second vibration suppression compens
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: December 15, 2020
    Assignee: NSK LTD.
    Inventors: Takayoshi Sugawara, Yousuke Imamura, Masahiro Maeda
  • Patent number: 10858033
    Abstract: A retractable steering column assembly includes a retractable portion. The retractable steering column assembly also includes an electric actuator mechanism for moving the retractable portion throughout a plurality of regions, the plurality of regions comprising an unstowed region, a stowed region, and a transition region between the unstowed region and the stowed region. The retractable steering column assembly further includes a controller monitoring at least one positional property of the retractable portion during movement within the transition region to detect a potential driver intervention of the movement.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: December 8, 2020
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Keyur R. Patel, Edward A. Cana
  • Patent number: 10843337
    Abstract: A control system, method and computer program product cooperate to assist control for an autonomous robot. An interface receives recognition information from an autonomous robot, said recognition information including candidate target objects to interact with the autonomous robot. A display control unit causes a display image to be displayed on a display of candidate target objects, wherein at least two of the candidate target objects are displayed with an associated indication of a target object score.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: November 24, 2020
    Assignee: Sony Corporation
    Inventors: Kenta Kawamoto, Yoshiaki Iwai, Satoru Shimizu
  • Patent number: 10821967
    Abstract: A temperature detection condition of a temperature detection unit used in a motor system is determined by: obtaining a phase current value flowing through a motor device and obtaining a temperature detection value; calculating, as an integrated phase current value, at least one of a first integrated phase current value, which is obtained by integrating an amount by which the phase current value exceeds a first phase current threshold, and a second integrated phase current value, which is obtained by integrating an amount by which the phase current value is smaller than a second phase current threshold that is equal to or smaller than the first phase current threshold; and determining an amount of variation in the temperature detection value detected by the temperature detection unit following the start of determination of the temperature detection condition and an amount of variation in the calculated integrated phase current value.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: November 3, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasukazu Murata, Keiichi Enoki, Masutaka Watanabe, Yoshimasa Nishijima, Shingo Harada
  • Patent number: 10822018
    Abstract: Methods, apparatus, systems and articles of manufacture for a steering apparatus for use with vehicles are disclosed. An example apparatus includes a housing for a vehicle steering system, a motor, an actuator, and a rack disposed in the housing, the motor to provide a torque to the actuator via a belt to translate the rack relative to the housing, and a first gear disposed between the motor and the actuator, the first gear to transfer the torque from the motor to the actuator when the belt does not provide the torque.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: November 3, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Robert Marcel Mrozek