Patents by Inventor Lee Hyoung CHO

Lee Hyoung CHO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11919520
    Abstract: A wheel slip control method for a vehicle is provided, and includes estimating equivalent inertia information of a driving system based on operation information of the driving system while a vehicle travels, determining whether the slip of a drive wheel occurs from the estimated equivalent inertia information of the driving system, determining whether the drive wheel is in an uneven wheel slip state where the slip occurs only in one of a left wheel and a right wheel of the drive wheel from a left wheel speed and a right wheel speed detected by a sensor, if it is determined that the slip of the drive wheel occurs, and controlling an operation of a braking device such that a braking force is applied to the vehicle wheel in which the slip occurs, if it is determined that the vehicle wheel is in the uneven wheel slip state.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: March 5, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ji Won Oh, Jeong Soo Eo, Ki Mo Sohn, Lee Hyoung Cho
  • Patent number: 11820357
    Abstract: Disclosed are a vehicle for generating an acceleration profile based on the acceleration cognitive characteristics of the human and a method of controlling the same. The method includes: receiving a manipulation amount of an accelerator pedal and calculating a first torque value, inserting the first torque value to a function that receives force and outputs acceleration feeling, generating a second torque value by inserting an output value of the function into a first filter for stabilizing the output value, generating a target torque value by inputting the second torque value to a second filter for stabilizing the second torque value, and generating a torque command based on the target torque value.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: November 21, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Lee Hyoung Cho, Ji Won Oh, Sang Joon Kim, Seong Ik Park
  • Publication number: 20230347736
    Abstract: A torque control apparatus may include an input device, a driving device, a memory, and a controller. For example, the torque control apparatus may be configured to obtain an input related to acceleration of the host vehicle from a user by use of the input device, to determine user requirement torque based on the input, to generate a first requirement torque to be input to the driving device for the acceleration of the host vehicle based on at least part of the user requirement torque, to generate an estimation rate value through the first requirement torque by use of a pitch rate estimation model, and to generate a second requirement torque by use of at least one of the estimation rate value, a requirement rate value, the user requirement torque, or a combination of the estimation rate value, the requirement rate value, and the user requirement torque.
    Type: Application
    Filed: July 6, 2023
    Publication date: November 2, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Young Sun NAM, Chang Hee CHO, Chang Hwan KIM, In Kyu LEE, Jae Ho LEE, Doo Hyun KIM, Sung Hoon YU, Lee Hyoung CHO, Nam Kwon LEE, Young Eun KIM, Jong Wha KIM, Ye Chan JEONG, Beom Jun PARK, Hyun KIM, Sang Joon KIM
  • Patent number: 11801841
    Abstract: An engine start controller for a hybrid vehicle and a method thereof are provided. The engine start controller includes a hybrid starter generator (HSG) that is connected to an engine by a belt, a sensor that is configured to measure an HSG speed, and a processor that applies a starting torque to the HSG. When starting the engine, the processor calculates an HSG speed estimated based on the applied starting torque and calculates an amount of slip of the belt using the HSG speed. In addition, the processor calculates a torque change rate correction value based on the calculated amount of slip, and corrects a rate of change rate in the starting torque based on the torque change rate correction value.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: October 31, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Sang Joon Kim, Lee Hyoung Cho
  • Patent number: 11745723
    Abstract: A vehicle driving force control method is provided. The vehicle driving force control method includes collecting vehicle driving information, estimating speed of a driving system of a vehicle from the collected vehicle driving information and calculating speed difference between measurement speed of the driving system and the estimated speed of the driving system, obtaining torque command rate information from the calculated speed difference, limiting a variation of reference torque command determined according to the vehicle driving information based on the acquired torque command rate information to determine final torque command, and controlling operation of a vehicle driving device according to the final torque command.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: September 5, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Won Oh, Jeong Soo Eo, Sung Jae Kim, Lee Hyoung Cho
  • Publication number: 20230234586
    Abstract: A vehicle speed controlling apparatus comprising a driving mode selector configured to receive a selection of a periodic-speed driving mode from a user, a driving strategy control unit including a speed profile generator configured to generate a periodic-speed driving speed profile with a period, an amplitude, and an average speed, and a driving assistance unit configured to output a required torque for a driving motor to follow the periodic-speed driving speed profile.
    Type: Application
    Filed: September 19, 2022
    Publication date: July 27, 2023
    Inventors: Ye Chan Jeong, Sang Joon Kim, Chang Hwan Kim, In Kyu Lee, Young Sun Nam, Doo Hyun Kim, Sung Hoon Yu, Lee Hyoung Cho, Chang Jin Oh, Nam Kwon Lee, Young Eun Kim, Jong Wha Kim, Hyun Kim, Oh Eun Kwon
  • Publication number: 20220203843
    Abstract: method of controlling torque of a vehicle driving device is provided. The method includes estimating speed of a driving system of a vehicle from vehicle driving information collected from the vehicle and calculating speed difference between actually measured speed of the driving system and the estimated speed of the driving system. A nominal rate limit value is determined according to the vehicle driving information and a required real-time rate correction amount is determined according to the calculated speed difference. A torque command variation is determined based on the determined nominal rate limit value and the determined required real-time rate correction amount. A torque command after correction in a previous control period is corrected by the determined torque command variation to determine a torque command after correction in a current control period.
    Type: Application
    Filed: September 22, 2021
    Publication date: June 30, 2022
    Inventors: Ji Won Oh, Jeong Soo Eo, Sung Jae Kim, Lee Hyoung Cho
  • Publication number: 20220185291
    Abstract: An engine start controller for a hybrid vehicle and a method thereof are provided. The engine start controller includes a hybrid starter generator (HSG) that is connected to an engine by a belt, a sensor that is configured to measure an HSG speed, and a processor that applies a starting torque to the HSG. When starting the engine, the processor calculates an HSG speed estimated based on the applied starting torque and calculates an amount of slip of the belt using the HSG speed. In addition, the processor calculates a torque change rate correction value based on the calculated amount of slip, and corrects a rate of change rate in the starting torque based on the torque change rate correction value.
    Type: Application
    Filed: October 19, 2021
    Publication date: June 16, 2022
    Inventors: Sang Joon Kim, Lee Hyoung Cho
  • Publication number: 20220111830
    Abstract: A vehicle driving force control method is provided. The vehicle driving force control method includes collecting vehicle driving information, estimating speed of a driving system of a vehicle from the collected vehicle driving information and calculating speed difference between measurement speed of the driving system and the estimated speed of the driving system, obtaining torque command rate information from the calculated speed difference, limiting a variation of reference torque command determined according to the vehicle driving information based on the acquired torque command rate information to determine final torque command, and controlling operation of a vehicle driving device according to the final torque command.
    Type: Application
    Filed: March 31, 2021
    Publication date: April 14, 2022
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Won OH, Jeong Soo Eo, Sung Jae Kim, Lee Hyoung Cho
  • Publication number: 20220105943
    Abstract: A wheel slip control method for a vehicle is provided, and includes estimating equivalent inertia information of a driving system based on operation information of the driving system while a vehicle travels, determining whether the slip of a drive wheel occurs from the estimated equivalent inertia information of the driving system, determining whether the drive wheel is in an uneven wheel slip state where the slip occurs only in one of a left wheel and a right wheel of the drive wheel from a left wheel speed and a right wheel speed detected by a sensor, if it is determined that the slip of the drive wheel occurs, and controlling an operation of a braking device such that a braking force is applied to the vehicle wheel in which the slip occurs, if it is determined that the vehicle wheel is in the uneven wheel slip state.
    Type: Application
    Filed: February 17, 2021
    Publication date: April 7, 2022
    Inventors: Ji Won Oh, Jeong Soo Eo, Ki Mo Sohn, Lee Hyoung Cho
  • Patent number: 11287439
    Abstract: A system and method for estimating a wheel speed of a vehicle are provided. The system includes a wheel speed sensor that detects a rotation speed of a wheel of the vehicle and a longitudinal acceleration sensor that detects a longitudinal acceleration of the vehicle. A controller converts the longitudinal acceleration to a wheel acceleration, compensates for the converted wheel acceleration based on a compensation value obtained using wheel speed information, integrates the compensated wheel acceleration, and calculates a wheel speed estimation value based on the integrated wheel acceleration.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: March 29, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Won Oh, Jeong Soo Eo, Sang Joon Kim, Lee Hyoung Cho
  • Patent number: 11285818
    Abstract: A driving torque command generating apparatus and method of an eco-friendly vehicle are provided. The apparatus and method obtain rapid reaction and response of the vehicle in response to a driving input while effectively reducing NVH problems caused by torsion and backlash of a drive system even during a significant change in driving force caused by the driving input. Torsional state information of a vehicle drive system is obtained from input information regarding a motor speed and a wheel speed detected by a motor speed detector and a wheel speed detector. A motor torque command is generated based on a driving input value input by a driving input value detector and the obtained torsional state information.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: March 29, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Won Oh, Jeong Soo Eo, Sang Joon Kim, Lee Hyoung Cho
  • Publication number: 20220055604
    Abstract: Disclosed are a vehicle for generating an acceleration profile based on the acceleration cognitive characteristics of the human and a method of controlling the same. The method includes: receiving a manipulation amount of an accelerator pedal and calculating a first torque value, inserting the first torque value to a function that receives force and outputs acceleration feeling, generating a second torque value by inserting an output value of the function into a first filter for stabilizing the output value, generating a target torque value by inputting the second torque value to a second filter for stabilizing the second torque value, and generating a torque command based on the target torque value.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 24, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Lee Hyoung CHO, Ji Won OH, Sang Joon KIM, Seong Ik PARK
  • Patent number: 10829108
    Abstract: Disclosed are a hybrid electric vehicle, which is capable of controlling engine starting in consideration of entry into a specific area, and method of controlling the same. A method of controlling engine starting of a hybrid vehicle includes determining whether catalyst heating is necessary, determining whether a current location corresponds to a specific area associated with exhaust emissions, determining whether a first mode driving is possible, when it is determined that the current position corresponds to the specific area and the catalyst heating is necessary, and performing the first mode driving when the first mode driving is determined to be possible, or a second mode driving when the first mode driving is determined to be impossible. Here, the first mode driving is performed by using an electric motor, and the second mode driving is performed by using at least an engine.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: November 10, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sang Joon Kim, Lee Hyoung Cho, Young Chul Kim, Jea Mun Lee, Dong Ho Yang
  • Patent number: 10710571
    Abstract: A method for controlling a response to driving load of a hybrid vehicle includes: estimating an optimum speed for a current driving situation, estimating a target driving load based on the optimum speed, determining an eco-level corresponding to the target driving load from among a plurality of eco-levels, and changing at least some of an eco-gauge according to the determined eco-level.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: July 14, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sang Joon Kim, Young Chul Kim, Lee Hyoung Cho, Dong Ho Yang
  • Patent number: 10662616
    Abstract: The present disclosure relates to a control device and a control method for a construction machine. The control device and the control method for the construction machine according to the exemplary embodiment of the present disclosure may adjust an engine revolutions per minute (rpm) according to a load applied to the construction machine, thereby controlling an output of equipment. In the control device and the control method for the construction machine according to the exemplary embodiment of the present disclosure, an output of a pump is increased at an appropriate time, so that good operation performance may be maintained, and in the case of an operation pattern, in which a load is low, the engine rpm is adjusted to be decreased, thereby improving fuel efficiency.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: May 26, 2020
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Lee Hyoung Cho, Won Sun Sohn, Byung Yoon Song, Jai Seok Bang, Min Ha An
  • Publication number: 20200088756
    Abstract: A system and method for estimating a wheel speed of a vehicle are provided. The system includes a wheel speed sensor that detects a rotation speed of a wheel of the vehicle and a longitudinal acceleration sensor that detects a longitudinal acceleration of the vehicle. A controller converts the longitudinal acceleration to a wheel acceleration, compensates for the converted wheel acceleration based on a compensation value obtained using wheel speed information, integrates the compensated wheel acceleration, and calculates a wheel speed estimation value based on the integrated wheel acceleration.
    Type: Application
    Filed: April 26, 2019
    Publication date: March 19, 2020
    Inventors: Ji Won Oh, Jeong Soo Eo, Sang Joon Kim, Lee Hyoung Cho
  • Publication number: 20190389317
    Abstract: A driving torque command generating apparatus and method of an eco-friendly vehicle are provided. The apparatus and method obtain rapid reaction and response of the vehicle in response to a driving input while effectively reducing NVH problems caused by torsion and backlash of a drive system even during a significant change in driving force caused by the driving input. Torsional state information of a vehicle drive system is obtained from input information regarding a motor speed and a wheel speed detected by a motor speed detector and a wheel speed detector. A motor torque command is generated based on a driving input value input by a driving input value detector and the obtained torsional state information.
    Type: Application
    Filed: April 10, 2019
    Publication date: December 26, 2019
    Inventors: Ji Won Oh, Jeong Soo Eo, Sang Joon Kim, Lee Hyoung Cho
  • Patent number: 10369986
    Abstract: The present disclosure relates to a wheel driving device and a wheel driving method for a hybrid construction machine, in which in a construction machine having wheels, particularly, a hybrid wheel loader, by small-capacity low-speed electric motors, small-capacity high-speed electric motors, transmissions each having a clutch, and a control unit which are installed for all of the wheels each, the wheel driving device drives the low-speed electric motor during low-speed driving and drives the high-speed electric motor during high-speed driving by turning on and off the clutch during the low-speed driving and the high-speed driving, thereby reducing manufacturing costs of the wheel driving device, improving fuel economy of the construction machine, reducing abrasion of tires mounted on the wheels, improving durability of the tires, and ensuring traveling stability.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: August 6, 2019
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Chang Hyun Kim, Eun Soo Jung, Dong Mok Kim, Kyeong Keun Kim, Hyun Jae Seo, Nag In Kim, Lee Hyoung Cho
  • Publication number: 20190185015
    Abstract: The present disclosure relates to an apparatus for limiting vehicle speed and a method thereof. To prevent a vehicle from exceeding a speed limit to secure safety and improve fuel economy, the apparatus includes: a mode setting device allowing a driver to set any one of a safety mode, a fuel economy mode, and a hybrid mode; a safety speed input device allowing the driver to input a safety speed; one or more processors determining an economical speed on the basis of a driving environment of a vehicle; and a controller limiting a speed of the vehicle on the basis of the safety speed or the economical speed according to a mode set by the driver.
    Type: Application
    Filed: July 31, 2018
    Publication date: June 20, 2019
    Inventors: Young Chul KIM, Lee Hyoung CHO, Sang Joon KIM, Dong Ho YANG