Patents by Inventor Jee-Hwan Ryu

Jee-Hwan Ryu 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: 12311544
    Abstract: A growth-type soft robot includes a housing including an external body including an internal accommodation space and one side open and a fixing portion formed on a periphery of an open region of the external body, a growth unit including an outer periphery having one end connected to the fixing portion, an inner periphery spaced apart from an inner side of the outer periphery and extending to the accommodation space, and a bent portion connecting the other end of the outer periphery to one end of the inner periphery to form a front end space, and a data collecting unit including a cable extending along a central portion surrounded by the inner periphery and a sensing module acquiring external information, wherein the other end of the inner periphery forms a folded region, and a length of the growth unit is adjustable by air supplied to the front end space.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: May 27, 2025
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jee-Hwan Ryu, Ji-Hun Kim
  • Publication number: 20210394358
    Abstract: A growth-type soft robot includes a housing including an external body including an internal accommodation space and one side open and a fixing portion formed on a periphery of an open region of the external body, a growth unit including an outer periphery having one end connected to the fixing portion, an inner periphery spaced apart from an inner side of the outer periphery and extending to the accommodation space, and a bent portion connecting the other end of the outer periphery to one end of the inner periphery to form a front end space, and a data collecting unit including a cable extending along a central portion surrounded by the inner periphery and a sensing module acquiring external information, wherein the other end of the inner periphery forms a folded region, and a length of the growth unit is adjustable by air supplied to the front end space.
    Type: Application
    Filed: July 12, 2021
    Publication date: December 23, 2021
    Inventors: Jee-Hwan RYU, Ji-Hun KIM
  • Publication number: 20180235829
    Abstract: A wearable upper-limb exercise device according to the present invention includes: a drive unit which is configured to be wearable on a user's back and generates driving power; a support unit which is configured to be wearable on the user's shoulder; an upper-limb bending and stretching unit which is configured to be wearable on the user's upper limb; and a power transmission unit which is connected to the upper-limb bending and stretching unit via the support unit from the drive unit, and controls the upper-limb bending and stretching unit in accordance with the driving power of the drive unit so as to bend or stretch the user's upper limb.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 23, 2018
    Applicant: KOREA UNIVERSITY OF TECHNOLOGY AND EDUCATION INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Jee-Hwan Ryu, Popov Dmitry, Gaponov Igor, Seung Jun Lee
  • Patent number: 9649533
    Abstract: A muscular strength enhancing robot to be driven by an intention of a user and a method of driving the robot are disclosed. The robot includes an actuator attached to a portion of a body of the user and configured to be actuated by enhancing a muscular strength, an encoder connected to the actuator and configured to measure an actual velocity at which the actuator moves, a force or torque sensor configured to measure an intensity of a force to be applied, an admittance modeling module configured to calculate a target velocity using the intensity of the force, and a proportional integral derivative (PID) control module configured to control actuation of the actuator in proportion to a velocity difference between the target velocity and the actual velocity, control the actuation by a cumulative value of the velocity difference, and control the actuation by a difference between a previous and a current velocity difference.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 16, 2017
    Assignee: Korea Polytechnic University Industry Academic Corporation Foundation
    Inventors: Eung-Hyuk Lee, Jee-Hwan Ryu, Su-Hong Eom, Seoung-Jun Lee
  • Publication number: 20170042704
    Abstract: Provided is an exoskeleton-type glove including: a glove type outer cover; a guide provided at a corresponding position between finger joints of a human body on the outer cover; a wire extended along the guide; an actuation module including an actuator that allows the finger joint of the human body to move by controlling an extension length of the wire and provided at a back side of a hand of the human body; and a buffer provided below the actuation module.
    Type: Application
    Filed: February 10, 2015
    Publication date: February 16, 2017
    Applicant: KOREA UNIVERSITY OF TECHNOLOGY AND EDUCATION INDUSTRY-UNIVERSITY COOPERATION
    Inventors: Jee-Hwan RYU, Dmitry POPOV, Igor GAPONOV
  • Publication number: 20160158601
    Abstract: A muscular strength enhancing robot to be driven by an intention of a user and a method of driving the robot are disclosed. The robot includes an actuator attached to a portion of a body of the user and configured to be actuated by enhancing a muscular strength, an encoder connected to the actuator and configured to measure an actual velocity at which the actuator moves, a force or torque sensor configured to measure an intensity of a force to be applied, an admittance modeling module configured to calculate a target velocity using the intensity of the force, and a proportional integral derivative (PID) control module configured to control actuation of the actuator in proportion to a velocity difference between the target velocity and the actual velocity, control the actuation by a cumulative value of the velocity difference, and control the actuation by a difference between a previous and a current velocity difference.
    Type: Application
    Filed: November 25, 2015
    Publication date: June 9, 2016
    Inventors: Eung-Hyuk Lee, Jee-Hwan Ryu, Su-Hong Eom, Seoung-Jun Lee
  • Publication number: 20150012164
    Abstract: A method includes constructing map information by obtaining information of environment of a target mowing area, generating a 3-D space path along which the robot having mowing equipment mounted thereon is to move in the target mowing area based on the constructed map information, driving the robot so that the robot travels along the 3-D space path in response to an instruction for executing a mowing mode, extracting a ground area and an obstacle for robot driving by extracting information of a 3-D space when traveling along the 3-D space path, adaptively controlling the driving and mowing mode of the robot based on the extracted ground area and obstacle, and terminating the mowing mode when detecting a completion of the mowing for the target mowing area during the mowing mode.
    Type: Application
    Filed: March 13, 2014
    Publication date: January 8, 2015
    Applicants: ASIA TECHNOLOGY CO., LTD., ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Wonpil YU, Sunglok Choi, Jae Hyun Park, Jee Hyung Lee, Byung Hee Han, Sang Hoon Oh, Jee-Hwan Ryu
  • Patent number: 7027965
    Abstract: Methods are provided for stabilizing a haptic interface of a computer-controlled one-port virtual-reality system or a two-port teleoperation system comprising a robot manipulator. “Stabilizing” means to reduce the sense of vibration in a haptic interface. A Passivity Observer is computed to measure the amount of energy produced at the haptic interface, and a Passivity Controller is calculated to damp or absorb excess energy which causes the sense of vibration. This invention also provides a “filter,” i.e. a threshold function which returns zero velocity if the computed estimated velocity is less than a small predetermined value, which may be applied to estimated velocities determined in impedance-based methods of this invention so as to remove noise in the velocity estimate. To improve speed of reaction of the systems, this invention also provides methods for resetting the Passivity Observer to zero when it has been too positive for too long a period of time.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: April 11, 2006
    Assignee: The University of Washington
    Inventors: Blake Hannaford, Jee-Hwan Ryu
  • Publication number: 20020062177
    Abstract: Methods are provided for stabilizing a haptic interface of a computer-controlled one-port virtual-reality system or a two-port teleoperation system comprising a robot manipulator. “Stabilizing” means to reduce the sense of vibration in a haptic interface. A Passivity Observer is computed to measure the amount of energy produced at the haptic interface, and a Passivity Controller is calculated to damp or absorb excess energy which causes the sense of vibration. This invention also provides a “filter,” i.e. a threshold function which returns zero velocity if the computed estimated velocity is less than a small predetermined value, which may be applied to estimated velocities determined in impedance-based methods of this invention so as to remove noise in the velocity estimate. To improve speed of reaction of the systems, this invention also provides methods for resetting the Passivity Observer to zero when it has been too positive for too long a period of time.
    Type: Application
    Filed: September 13, 2001
    Publication date: May 23, 2002
    Inventors: Blake Hannaford, Jee-Hwan Ryu