Patents by Inventor Hotae SEO

Hotae SEO 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).

  • Method for estimating road surface friction coefficient of tire and device for estimating road surface friction coefficient of tire in high speed normal driving state
    Patent number: 11186286
    Abstract: The present invention relates to a method and device for estimating the road surface friction coefficient of a tire, which estimate the road surface friction coefficient of a tire mounted on a wheel of a vehicle in a state in which the vehicle is normally running at high speed. The method includes: acquiring the state information of a vehicle including at least one of engine state information, transmission state information, and chassis state information from sensors mounted on the vehicle and specifications set for the vehicle; estimating a longitudinal slip ratio, normal force, and longitudinal force for a tire mounted on each wheel of the vehicle by using the acquired state information of the vehicle; and estimating a road surface friction coefficient for the tire by using the estimated longitudinal slip ratio, normal force, and longitudinal force.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: November 30, 2021
    Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Kyongsu Yi, Taewoo Kim, Hotae Seo
  • METHOD FOR ESTIMATING ROAD SURFACE FRICTION COEFFICIENT OF TIRE AND DEVICE FOR ESTIMATING ROAD SURFACE FRICTION COEFFICIENT OF TIRE IN HIGH SPEED NORMAL DRIVING STATE
    Publication number: 20200023852
    Abstract: The present invention relates to a method and device for estimating the road surface friction coefficient of a tire, which estimate the road surface friction coefficient of a tire mounted on a wheel of a vehicle in a state in which the vehicle is normally running at high speed. The method includes: acquiring the state information of a vehicle including at least one of engine state information, transmission state information, and chassis state information from sensors mounted on the vehicle and specifications set for the vehicle; estimating a longitudinal slip ratio, normal force, and longitudinal force for a tire mounted on each wheel of the vehicle by using the acquired state information of the vehicle; and estimating a road surface friction coefficient for the tire by using the estimated longitudinal slip ratio, normal force, and longitudinal force.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 23, 2020
    Inventors: Kyongsu YI, Taewoo KIM, Hotae SEO