Patents by Inventor Sung-Do KIM

Sung-Do KIM 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).

  • Publication number: 20240077878
    Abstract: The inventive concept provides a transfer robot system. Embodiments of the inventive concept provide a transfer robot system and a transfer robot system driving method in which a bottleneck phenomenon of mobile robots may be prevented, as a new obstacle which does not exist within a map for a mobile robot is recognized in advance during an autonomous driving of the mobile robot and the new obstacle is not passed through. The transfer robot system includes an OHT for transferring an article by autonomously driving along a rail and having a bottom side distance detection sensor installed for generating a distance information of below; and a mobile robot for transferring the article by autonomously driving on the ground and autonomously driving while avoiding an obstacle information generated through the distance information.
    Type: Application
    Filed: March 3, 2023
    Publication date: March 7, 2024
    Applicant: SEMES CO., LTD.
    Inventors: Seung Jun LEE, Seung Seok HA, In Sung CHOI, Gil Do KIM
  • Patent number: 11914153
    Abstract: A method and an apparatus for processing a screen by using a device are provided. The method includes obtaining, at the second device, a display screen displayed on the first device and information related to the display screen according to a screen display request regarding the first device, determining, at the second device, an additional screen based on the display screen on the first device and the information related to the display screen, and displaying the additional screen near the display screen on the first device.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: February 27, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-sik Kim, Su-jung Bae, Moon-sik Jeong, Sung-do Choi
  • Patent number: 11912690
    Abstract: The present invention relates to a pidolate salt and malate salt of a compound represented by a formula 1 with an excellent liquid-phase stability, solid-phase stability, water solubility, precipitation stability and hygroscopicity all together as a compound for preventing and treating diseases mediated by an acid pump antagonistic activity, as well as a method for preparing the same.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: February 27, 2024
    Assignee: HK INNO.N CORPORATION
    Inventors: Eun Sun Kim, Min Kyoung Lee, Sung Ah Lee, Kwang Do Choi, Jae Sun Kim, Hyung Chul Yoo
  • Publication number: 20230420705
    Abstract: A system and a method of inspecting an air compressor for a fuel cell are proposed. The inspection system includes a fuel cell; an air compressor provided on an inlet side of a cathode of the fuel cell and provided with a motor; and a controller configured to calculate an estimated consumption current of the air-compressor motor through a relationship between an applied voltage and a rotation speed of the air-compressor motor and configured to compare the calculated estimated consumption current with a measured actual consumption current to determine whether a permanent magnet of the air-compressor motor is demagnetized.
    Type: Application
    Filed: September 13, 2022
    Publication date: December 28, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Joo Yeon Kim, Min Su Kang, Tae Young Kim, Sung Do Kim, Chang Seok You
  • Publication number: 20230402945
    Abstract: A sensorless induction motor system includes a control unit which applies a plurality of sampling pulse voltages to phases of the stator, estimates the position of a rotor through a first rotor position vector having the greatest deviation in an induced current, compares an induced current deviation of a second rotor position vector having a second greatest deviation of deviation of the induced current with that of a first rotor position vector, and determines whether or not permanent magnets are demagnetized; and a method of controlling the sensorless induction motor system.
    Type: Application
    Filed: November 4, 2022
    Publication date: December 14, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Sung Do KIM, Chang Seok YOU, Hyo Jeong LEE, Min Su KANG, Joo Yeon KIM
  • Publication number: 20230387834
    Abstract: A sensorless induction motor system and a control method thereof includes a motor including a stator including windings forming a plurality of phases and a rotor including a permanent magnet, and a controller configured to control operation of the motor by controlling a voltage applied to each phase of the stator, to set a stop waiting time predicted to be necessary for the rotor to stop when the motor is controlled to stop, to apply a pulse voltage to each phase of the stator a plurality of times after the stop waiting time, and to conclude that the rotor has stopped when a minimum deviation value of an induced current is equal to or greater than a reference value.
    Type: Application
    Filed: October 25, 2022
    Publication date: November 30, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Min Su KANG, Joo Yeon KIM, Sung Do KIM, Chang Seok YOU
  • Publication number: 20230353074
    Abstract: Disclosed are a sensorless induction motor system including a controller configured to control operation of a motor by controlling a voltage applied to each phase of a stator, to set a stop waiting time expected to be required for the rotor to stop during stop control of the motor, to apply a pulse voltage to each phase of the stator a plurality of times after the stop waiting time, and to determine that the rotor is stopped when rotor position vectors having largest induced current deviations are observed as the same rotor position vector, and a control method thereof.
    Type: Application
    Filed: October 31, 2022
    Publication date: November 2, 2023
    Inventors: Joo Yeon Kim, Chang Seok You, Sung Do Kim, Min Su Kang
  • Patent number: 11777118
    Abstract: Disclosed herein is a method of controlling start/stop of a parallel fuel cell system, which, when controlling stop of a parallel fuel cell system in which two or more fuel cell systems are connected in parallel, considers operating state information of each fuel cell system, such as a current speed value of an air compressor and an opening degree of an air-exhaust-side air pressure valve of a fuel cell stack. Accordingly, the method can calculate a delay time for performing fuel cell system stop control for the two or more fuel cell systems, and sequentially perform the fuel cell system stop control for the two or more fuel cell systems based on the calculated delay time. Therefore, it is possible to minimize output delay of each fuel cell system and to achieve deterioration prevention and efficiency improvement of the fuel cell stack by fuel cell system start/stop control.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: October 3, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Sung Do Kim, Joo Yeon Kim, Min Su Kang, Chang Seok You
  • Publication number: 20230282853
    Abstract: A method and system for controlling an air compressor of a fuel cell system is capable of increasing the output of the air compressor motor while preventing a voltage drop of the fuel cell stack by limiting the rotation speed of the air compressor motor according to a demand output and at the same time limiting the phase current and power consumption of the motor when the demand output of a vehicle equipped with the fuel cell system is changed.
    Type: Application
    Filed: September 20, 2022
    Publication date: September 7, 2023
    Inventors: Chang Seok You, Joo Yeon Kim, Sung Do Kim, Min Su Kang
  • Patent number: 11750130
    Abstract: Provided is a method of controlling a sensorless motor for an air compressor. The method controls early driving of a sensorless motor for an air compressor, overcomes related-art problems, and improves control response. A position of a rotor of the motor, finally estimated by a sensorless control logic at a point in time at which the motor is determined to be in the stopped state, is determined to be an alignment target position. An alignment start position is determined from the alignment target position in accordance with a predetermined alignment offset angle. The position of the rotor of the motor is controlled to change from the determined alignment start position to the alignment target position.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: September 5, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Chang Seok You, Sung Do Kim, Min Su Kang
  • Publication number: 20230231101
    Abstract: A method of manufacturing a negative electrode includes styrene butadiene rubber on at least one surface of a negative electrode current collector, applying a second slurry including a negative electrode active material and a polyacrylic acid-based binder onto the first slurry, and drying and rolling the negative electrode current collector to which the first slurry and the second slurry are applied. The negative electrode active material includes a silicon-based negative electrode active material. According to the present disclosure, expansion and contraction of a silicon-based negative electrode active material during charging and discharging may be alleviated, and electrode flexibility may be improved, resulting in a significant improvement in lifespan properties of a secondary battery.
    Type: Application
    Filed: January 18, 2023
    Publication date: July 20, 2023
    Inventors: Kwang Ho JEONG, Sung Do KIM, Jae Kyu JIN
  • Publication number: 20230223548
    Abstract: According to an exemplary embodiment, there is provided a secondary battery in which a value of K1 represented by the following Expression (1) is 130 to 270: (200*AR+CR+20*CIR)*(1+CA)/CP??(1) in Expression (1), AR is a bulk resistance (?·cm) of the anode, CR is a bulk resistance (?·cm) of the cathode, CIR is an interfacial resistance (?·cm2) between the cathode active material layer and the cathode current collector, CP is 1?D/4.7, D is a pressed density (g/cc) of the cathode, and CA is an adhesive force (N/18 mm) between the cathode active material layer and the cathode current collector.
    Type: Application
    Filed: January 13, 2023
    Publication date: July 13, 2023
    Inventors: Jae Kyu JIN, Jeong A KIM, Sung Do KIM
  • Publication number: 20230131865
    Abstract: Proposed is a method of diagnosing abnormality of sensorless control of a motor for an air compressor, the method including estimating a speed of a motor in real time when a motor starts determining whether or not a preset condition for activating a function of diagnosing abnormality of sensorless control is satisfied, from a slope of the estimated speed of the motor performing control for decreasing an amount of electric current to be applied to the motor, in a case where the preset condition is satisfied computing an amount of decrease in the slope of the estimated speed of the motor while the amount of the electric current is decreased; and determining whether or not the sensorless control fails, by comparing the amount of the decrease in the slope of the speed of the motor with a preset value for confirming diagnosis of the abnormality of the sensorless control.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 27, 2023
    Inventors: Min Su Kang, Joo Yeon Kim, Sung Do Kim, Chang Seok You
  • Publication number: 20230125607
    Abstract: A negative electrode includes a negative electrode current collector and a negative electrode mixture layer provided on at least one surface of the negative electrode current collector. The negative electrode mixture layer includes a negative electrode active material, a binder, and an additive containing a conductive polymer and a template compound. The conductive polymer included in the negative electrode may lower resistance of the electrode by providing an electron movement path for the negative electrode active material and the conductive material of the negative electrode. Stable electrical conductivity may be maintained while significantly reducing the content of conductive materials such as carbon black and carbon nanotubes, thereby improving lifespan characteristics of the secondary battery.
    Type: Application
    Filed: October 21, 2022
    Publication date: April 27, 2023
    Inventors: Sung Do KIM, Kwang Ho JEONG
  • Patent number: 11623528
    Abstract: A motor driving control method for controlling a motor speed so that a speed measured value of a motor follows a speed command value is provided. The method includes driving the motor by repeating an on section where a torque is generated in the motor and an off section where a torque is not generated in the motor at a regular period, based on the speed command value, wherein the driving includes applying a phase voltage to only one of multiple phases of the motor in the on section by a pulse width modulation scheme.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: April 11, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Min Su Kang, Chang Seok You, Sung Do Kim, Dong Hun Lee
  • Publication number: 20230102896
    Abstract: The present disclosure provides an electronic device, including a flexible display, a frame part configured to support the flexible display and comprise a first frame and a second frame disposed so as to be slidable with respect to the first frame, a driving part configured to change a shape of the flexible display based on a relative position between the first frame and the second frame, and a controller, wherein the controller performs a designated operation in response to reception of an input signal. Other example embodiments are possible.
    Type: Application
    Filed: January 9, 2020
    Publication date: March 30, 2023
    Applicant: LG ELECTRONICS INC.
    Inventors: Ah Rah KOH, Hak Ho CHOI, Seong Cheol LEE, Sung Do KIM
  • Publication number: 20230071079
    Abstract: Disclosed herein is a method of controlling start/stop of a parallel fuel cell system, which, when controlling stop of a parallel fuel cell system in which two or more fuel cell systems are connected in parallel, considers operating state information of each fuel cell system, such as a current speed value of an air compressor and an opening degree of an air-exhaust-side air pressure valve of a fuel cell stack. Accordingly, the method can calculate a delay time for performing fuel cell system stop control for the two or more fuel cell systems, and sequentially perform the fuel cell system stop control for the two or more fuel cell systems based on the calculated delay time. Therefore, it is possible to minimize output delay of each fuel cell system and to achieve deterioration prevention and efficiency improvement of the fuel cell stack by fuel cell system start/stop control.
    Type: Application
    Filed: May 12, 2022
    Publication date: March 9, 2023
    Inventors: Sung Do Kim, Joo Yeon Kim, Min Su Kang, Chang Seok You
  • Patent number: 11563225
    Abstract: A method of controlling an air compressor motor for a fuel cell vehicle is provide. The method includes calculating a counter electromotive force constant of the air compressor motor based on a voltage and a current of the air compressor motor for the fuel cell vehicle supplying air to a fuel cell stack and a rotation speed of the air compressor motor. The method additionally includes determining whether a permanent magnet of the air compressor motor is demagnetized based on a result of comparison between the calculated counter electromotive force constant value and a pre-set counter electromotive force constant design value.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: January 24, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sung Do Kim, Min Su Kang, Chang Seok You, Dong Hun Lee
  • Patent number: 11557993
    Abstract: A motor-driving control system includes an actuator configured to generate rotational force by driving received current, a current provider configured to provide current to the actuator while repeatedly turning on and off the current at a preset period and duty, and a controller configured to estimate a rotation position or a rotation speed of the actuator in a section in which the current of the current provider is turned on or off and to control the current provider to follow a speed command based on the estimated rotation position or rotation speed.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: January 17, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Chang Seok You, Joo Yeon Kim, Sung Do Kim, Min Su Kang
  • Patent number: 11545685
    Abstract: An operation control system and method of a fuel cell vehicle are provided. The system includes a fuel cell, an air supply device operated by a motor, to supply air to the fuel cell and a sensing unit that senses an abnormal operation of the air supply device. A calculation unit calculates a lower-limit voltage of the air supply device required for normal operation of the air supply device when the sensing unit senses abnormal operation of the air supply device. A controller then adjusts a voltage supplied to the air supply device based on the calculated lower-limit voltage.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: January 3, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sung Do Kim, Chang Seok You, Min Su Kang