Patents by Inventor Lan Chung

Lan Chung 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: 11299902
    Abstract: The present invention relates to a damping system that utilizes a space between an inner building and a stair chamber installed outside the inner building to control vibration of an earthquake applied to a building or a building structure, and more particularly, to a damping system utilizing a space between a stair chamber and an inner building, which is installed in a building structure including the inner building and the stair chamber to damp a transverse force due to seismic waves.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 12, 2022
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, DANKOOK UNIVERSITY
    Inventors: Sang Hyun Lee, Lan Chung, Tae Won Park, Moo Won Hur, Ji Eun Roh
  • Publication number: 20210277681
    Abstract: The present invention relates to a damping system that utilizes a space between an inner building and a stair chamber installed outside the inner building to control vibration of an earthquake applied to a building or a building structure, and more particularly, to a damping system utilizing a space between a stair chamber and an inner building, which is installed in a building structure including the inner building and the stair chamber to damp a transverse force due to seismic waves.
    Type: Application
    Filed: October 25, 2017
    Publication date: September 9, 2021
    Inventors: Sang Hyun LEE, Lan CHUNG, Tae Won PARK, Moo Won HUR, Ji Eun ROH
  • Patent number: 10253841
    Abstract: The present invention relates to a method for calculating optimal control force of an active mass damper and controlling the active mass damper, which is used for vibration control of a structure, the method comprising: (a) sensing frequency and an acceleration response generated in a structure in real time by a sensor, wherein the frequency and the acceleration response are structural responses; (b) calculating velocity and displacement of the active mass damper by integrating the acceleration response by an integral calculation module; (c) calculating the optimal control force using a weighting function and a zero point calibration signal according to the calculated velocity, the calculated displacement, and the calculated displacement, by a control force calculation module; and (d) controlling driving of an actuator according to the calculated optimal control force.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: April 9, 2019
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, DANKOOK UNIVERSITY
    Inventors: Sang Hyun Lee, Sung Sik Woo, Lan Chung
  • Publication number: 20170130802
    Abstract: The present invention relates to a method for calculating optimal control force of an active mass damper and controlling the active mass damper, which is used for vibration control of a structure, the method comprising: (a) sensing frequency and an acceleration response generated in a structure in real time by a sensor, wherein the frequency and the acceleration response are structural responses; (b) calculating velocity and displacement of the active mass damper by integrating the acceleration response by an integral calculation module; (c) calculating the optimal control force using a weighting function and a zero point calibration signal according to the calculated velocity, the calculated displacement, and the calculated displacement, by a control force calculation module; and (d) controlling driving of an actuator according to the calculated optimal control force.
    Type: Application
    Filed: October 16, 2014
    Publication date: May 11, 2017
    Inventors: Sang Hyun Lee, Sung Sik Woo, Lan Chung