Patents by Inventor Hyeon Hee JEONG
Hyeon Hee JEONG 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).
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Patent number: 11951938Abstract: A steering wheel locking control apparatus may include: a power supply switch configured to receive power from a battery when an ignition switch of a vehicle is turned off; and a switch unit connected to a motor, turned on when power is received through the power supply switch, and configured to lock a steering wheel through a closed circuit formed by shorting phases of the motor.Type: GrantFiled: September 9, 2021Date of Patent: April 9, 2024Assignee: Hyundai Mobis Co., Ltd.Inventors: Jung Suk Ko, Sung Ho Jang, Seung Young Park, Hyeon Hee Jeong
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Publication number: 20240109350Abstract: The present disclosure relates to a portable printer including a main body in a portable form which is capable of accommodating a cartridge having a nozzle for delivering a printing material to a target having a soft or hard surface, a seating part which is provided to be exposed to an outside from a lower portion of the main body to face the surface of the target and at least partially surrounds the nozzle, a roller provided respectively at the front and rear of the nozzle at the lower portion of the main body with respect to a direction in which the main body moves along the surface of the target to deliver the printing material to the target, and a printing adjustment unit configured to adjust a height difference between the nozzle and the roller to adjust a height difference between the nozzle and the surface of the target.Type: ApplicationFiled: October 20, 2022Publication date: April 4, 2024Applicant: LG HOUSEHOLD & HEALTH CARE LTD.Inventors: Chang Hwan HYUN, Ji Hee LEE, Kang Ug LEE, Sung Hyoun JANG, Hyeon Jin KWEON, Hae Na CHEONG, Ji Hee JEONG, Jung Yong LEE, Ha Young KIM
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Patent number: 11837980Abstract: A motor flux weakening control method with data map creation is provided. The method estimates a phase angle between a dq electric current vector and a d-axis based on a speed of the motor; estimates an input direct current; repeats the estimating of the phase angle and the direct current while decreasing a magnitude of the dq electric current vector based on a difference between the estimated direct current and a preset direct current limitation value; and interrupts the repeating of the estimating of the phase angle and the estimating of the direct current when the direct current and the preset direct current limitation value are equal, and stores a relationship between the speed of the motor, the direct current voltage, the phase angle, and the magnitude of the dq electric current vector, when the estimated direct current and the preset direct current limitation value are equal.Type: GrantFiled: April 12, 2022Date of Patent: December 5, 2023Assignee: Hyundai Mobis Co., Ltd.Inventor: Hyeon Hee Jeong
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Publication number: 20230188069Abstract: A motor flux weakening control method with data map creation is provided. The method estimates a phase angle between a dq electric current vector and a d-axis based on a speed of the motor; estimates an input direct current; repeats the estimating of the phase angle and the direct current while decreasing a magnitude of the dq electric current vector based on a difference between the estimated direct current and a preset direct current limitation value; and interrupts the repeating of the estimating of the phase angle and the estimating of the direct current when the direct current and the preset direct current limitation value are equal, and stores a relationship between the speed of the motor, the direct current voltage, the phase angle, and the magnitude of the dq electric current vector, when the estimated direct current and the preset direct current limitation value are equal.Type: ApplicationFiled: April 12, 2022Publication date: June 15, 2023Applicant: HYUNDAI MOBIS CO., LTD.Inventor: Hyeon Hee JEONG
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Publication number: 20230188071Abstract: A motor driving system includes an energy storage device storing direct current power for driving a motor, an inverter including a plurality of switching elements to transform the direct current power stored in the energy storage device into alternating current power and to provide the alternating current power to the motor, and a controller performing pulse width modulation control on the plurality of switching elements of the inverter. The controller generates a voltage command of the motor based on a difference between a current command of the motor and a motor current actually provided to the motor, changes the voltage command within an operation region when the generated voltage command deviates from a preset operation region, and performs flux weakening control for generating the current command such that a difference between the voltage command before the change and the voltage command after the change becomes minimum.Type: ApplicationFiled: November 16, 2022Publication date: June 15, 2023Applicant: HYUNDAI MOBIS CO., LTD.Inventor: Hyeon Hee JEONG
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Publication number: 20230009437Abstract: A steering wheel locking control apparatus may include: a power supply switch configured to receive power from a battery when an ignition switch of a vehicle is turned off; and a switch unit connected to a motor, turned on when power is received through the power supply switch, and configured to lock a steering wheel through a closed circuit formed by shorting phases of the motor.Type: ApplicationFiled: September 9, 2021Publication date: January 12, 2023Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Jung Suk KO, Sung Ho JANG, Seung Young PARK, Hyeon Hee JEONG
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Publication number: 20220185365Abstract: An apparatus with motor speed estimation includes: a motor speed estimator configured to estimate a motor speed based on a DC link voltage for driving a motor, a motor current flowing through the motor, and a voltage command; and a limiter configured to generate a current command based on the estimated motor speed, a torque command, and the DC link voltage.Type: ApplicationFiled: April 15, 2021Publication date: June 16, 2022Applicant: HYUNDAI MOBIS CO., LTD.Inventors: In Hyuk KIM, Kyu Ha KIM, Jeong Hoon SEO, Hyeon Hee JEONG
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Patent number: 11362602Abstract: Disclosed herein are a motor control apparatus and method. The motor control apparatus includes a compensation signal generator configured to apply a DC-Link voltage (VLink) for driving a motor to a parameter map preset in order to estimate a gain and phase of a motor torque ripple generated when the motor is driven according to a motor command current and a motor rotation speed, and to generate a compensation signal (icomp) for compensating for the motor torque ripple corresponding to a current input motor command current (iq*), motor rotation speed (?m), and DC-Link voltage (VLink), and a current controller configured to control the current of the motor by controlling an inverter such that a compensation command current (iq*_comp), generated by reflecting the compensation signal (icomp), in the motor command current (iq*), coincides with a motor drive current (iq) supplied to the motor from the inverter.Type: GrantFiled: December 13, 2019Date of Patent: June 14, 2022Assignee: HYUNDAI MOBIS CO., LTD.Inventors: Hyeon Hee Jeong, Kyu Ha Kim, In Hyuk Kim, Jeong Hoon Seo
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Patent number: 11277085Abstract: An apparatus for controlling a motor may include: an inverter unit configured to output 3-phase AC currents through a plurality of switches to be switched by an input control signal to drive a 3-phase motor; a current detection unit including a plurality of current sensors configured to detect two or more phase currents among the 3-phase AC currents flowing through the 3-phase motor; and a control unit configured to receive respective fed-back phase currents detected by the plurality of respective current sensors, correct the phase currents by applying, to the fed-back phase currents, respective correction gains estimated in advance on the plurality of respective current sensors so as to compensate for a current detection deviation of each of the plurality of respective current sensors, and then control the inverter unit based on the corrected phase currents to control driving of the 3-phase motor.Type: GrantFiled: November 12, 2019Date of Patent: March 15, 2022Assignee: HYUNDAI MOBIS CO., LTD.Inventors: Hyeon Hee Jeong, Kyu Ha Kim, In Hyuk Kim, Jeong Hoon Seo
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Patent number: 11101752Abstract: A torque ripple compensation apparatus including a torque measurement unit configured to output torque measured through a torque sensor of an MDPS system; a motor speed measurement unit configured to output motor speed measured through a position sensor of an MDPS motor; a control unit configured to separately output an offset signal and a torque ripple signal based on the motor speed information and the measured torque information; and a torque ripple compensation unit configured to synthesize a plurality of torque ripple signals outputted from the control unit, and output a torque ripple compensation signal as a motor control signal to the MDPS motor, the torque ripple compensation signal being used to compensate for the synthesized torque ripple signal.Type: GrantFiled: February 19, 2020Date of Patent: August 24, 2021Assignee: Hyundai Mobis Co., Ltd.Inventors: In Hyuk Kim, Kyu Ha Kim, Hyeon Hee Jeong, Jeong Hoon Seo
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Publication number: 20200274467Abstract: A torque ripple compensation apparatus including a torque measurement unit configured to output torque measured through a torque sensor of an MDPS system; a motor speed measurement unit configured to output motor speed measured through a position sensor of an MDPS motor; a control unit configured to separately output an offset signal and a torque ripple signal based on the motor speed information and the measured torque information; and a torque ripple compensation unit configured to synthesize a plurality of torque ripple signals outputted from the control unit, and output a torque ripple compensation signal as a motor control signal to the MDPS motor, the torque ripple compensation signal being used to compensate for the synthesized torque ripple signal.Type: ApplicationFiled: February 19, 2020Publication date: August 27, 2020Inventors: In Hyuk KIM, Kyu Ha KIM, Hyeon Hee JEONG, Jeong Hoon SEO
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Publication number: 20200235679Abstract: Disclosed herein are a motor control apparatus and method. The motor control apparatus includes a compensation signal generator configured to apply a DC-Link voltage (VLink) for driving a motor to a parameter map preset in order to estimate a gain and phase of a motor torque ripple generated when the motor is driven according to a motor command current and a motor rotation speed, and to generate a compensation signal (icomp) for compensating for the motor torque ripple corresponding to a current input motor command current (iq*), motor rotation speed (?m), and DC-Link voltage (VLink), and a current controller configured to control the current of the motor by controlling an inverter such that a compensation command current (iq*_comp), generated by reflecting the compensation signal (icomp), in the motor command current (iq*), coincides with a motor drive current (iq) supplied to the motor from the inverter.Type: ApplicationFiled: December 13, 2019Publication date: July 23, 2020Inventors: Hyeon Hee JEONG, Kyu Ha Kim, In Hyuk Kim, Jeong Hoon Seo
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Publication number: 20200162001Abstract: An apparatus for controlling a motor may include: an inverter unit configured to output 3-phase AC currents through a plurality of switches to be switched by an input control signal to drive a 3-phase motor; a current detection unit including a plurality of current sensors configured to detect two or more phase currents among the 3-phase AC currents flowing through the 3-phase motor; and a control unit configured to receive respective fed-back phase currents detected by the plurality of respective current sensors, correct the phase currents by applying, to the fed-back phase currents, respective correction gains estimated in advance on the plurality of respective current sensors so as to compensate for a current detection deviation of each of the plurality of respective current sensors, and then control the inverter unit based on the corrected phase currents to control driving of the 3-phase motor.Type: ApplicationFiled: November 12, 2019Publication date: May 21, 2020Inventors: Hyeon Hee JEONG, Kyu Ha KIM, In Hyuk KIM, Jeong Hoon SEO