Patents by Inventor Kyoung-Su Yi

Kyoung-Su Yi 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: 9950703
    Abstract: A vehicle with independently driven multiple axles and a controller which independently drives the multiple axles are disclosed. The controller includes a first controller which determines a target control value including at least one of a mechanical steering angle of each of a plurality of wheels of a vehicle, a target yaw moment of the vehicle, a target longitudinal force of the vehicle, and a target wheel speed of each of the plurality of wheels; and a second controller which determines wheel torques of the plurality of wheels, which drive the plurality of wheels independently, based on the target control value, wherein the wheel torques of the plurality of wheels are different from one another.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: April 24, 2018
    Assignee: HANWHA LAND SYSTEMS CO., LTD.
    Inventors: Jong-seok Lee, Kyoung-su Yi, Won-gun Kim, Soung-yong Joung
  • Patent number: 9505287
    Abstract: An active damping system has an electrically controlled actuator including: a steering wheel angle sensor; a yaw rate sensor; a lateral acceleration sensor; a vertical acceleration sensor; a roll angle sensor; a control mode determining unit configured to receive the signals detected by the sensors, thereby determining a control mode; a control signal generating unit configured to generate a control signal depending upon the control mode determined by the control mode determining unit; an electric motor which is operated according to the control signal of the control signal generating unit; and a ball screw which is rotated in cooperation with a rotation shaft of the electric motor at one side, and is meshed with an axle of the vehicle at the other side to vary a distance between the vehicle body and the axle according to the rotation of the electric motor.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: November 29, 2016
    Assignee: SEOUL NATIONAL UNIVERSITY R & DB FOUNDATION
    Inventors: Kyoung Su Yi, Dong Hoon Shin
  • Publication number: 20160200160
    Abstract: An active damping system has an electrically controlled actuator including: a steering wheel angle sensor; a yaw rate sensor; a lateral acceleration sensor; a vertical acceleration sensor; a roll angle sensor; a control mode determining unit configured to receive the signals detected by the sensors, thereby determining a control mode; a control signal generating unit configured to generate a control signal depending upon the control mode determined by the control mode determining unit; an electric motor which is operated according to the control signal of the control signal generating unit; and a ball screw which is rotated in cooperation with a rotation shaft of the electric motor at one side, and is meshed with an axle of the vehicle at the other side to vary a distance between the vehicle body and the axle according to the rotation of the electric motor.
    Type: Application
    Filed: January 13, 2015
    Publication date: July 14, 2016
    Inventors: Kyoung Su YI, Dong Hoon Shin
  • Publication number: 20140379220
    Abstract: A vehicle with independently driven multiple axles and a controller which independently drives the multiple axles are disclosed. The controller includes a first controller which determines a target control value including at least one of a mechanical steering angle of each of a plurality of wheels of a vehicle, a target yaw moment of the vehicle, a target longitudinal force of the vehicle, and a target wheel speed of each of the plurality of wheels; and a second controller which determines wheel torques of the plurality of wheels, which drive the plurality of wheels independently, based on the target control value, wherein the wheel torques of the plurality of wheels are different from one another.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 25, 2014
    Applicants: SNU R&DB FOUNDATION, SAMSUNG TECHWIN CO., LTD.
    Inventors: Jong-seok LEE, Kyoung-su YI, Won-gun KIM, Soung-yong JOUNG
  • Publication number: 20130211678
    Abstract: A vehicle with independently driven multiple axles and a controller which independently drives the multiple axles are disclosed. The controller includes a first controller which determines a target control value including at least one of a mechanical steering angle of each of a plurality of wheels of a vehicle, a target yaw moment of the vehicle, a target longitudinal force of the vehicle, and a target wheel speed of each of the plurality of wheels, according to a driving condition of the vehicle, when the first controller receives an operation input including at least one of a steering input, an acceleration input and a braking input; and a second controller which determines wheel torques of the plurality of wheels, which drive the plurality of wheels independently, based on the target control value, wherein the wheel torques of the plurality of wheels are different from one another.
    Type: Application
    Filed: October 12, 2011
    Publication date: August 15, 2013
    Applicants: SNU R&DB FOUNDATION, SAMSUNG TECHWIN CO., LTD.
    Inventors: Jong-Seok Lee, Kyoung-Su Yi, Won-Gun Kim, Soung-Yong Joung