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Kim, Junggon,Kim, WonGun,Jung, Sunghoon Elsevier 2019 Journal of Asia-Pacific biodiversity(Online) Vol.12 No.1
<P><B>Abstract</B></P> <P>Two genera of the plant bug in the subfamily Mirinae (Hemiptera: Heteroptera: Miridae) are newly reported from the Korean Peninsula with discoveries of <I>Tolongia pilosa</I> Yasunaga, 1991 and <I>Yamatolygus insulanus</I> Yasunaga, 1994. The male genital structure of <I>T. pilosa</I> is remarked. Female genitalia of <I>Y. insulanus</I> is described for the first time. Morphological information such as diagnoses is also provided.</P>
KIM, WONGUN,KIM, JUNGGON,LEE, HODAN,RÉ,DEI, DÁ,VID,JUNG, SUNGHOON Magnolia Press 2017 Zootaxa Vol.4320 No.2
<P>The species of the genus Elasmostethus Fieber, 1860 (Hemiptera: Heteroptera: Acanthosomatidae) occurring in the Korean Peninsula are reviewed. Six species are recognized; the occurrence of four previously recorded species, including E. brevis Lindberg, 1934, E. humeralis Jakovlev, 1883, E. interstinctus (Linnaeus, 1758), and E. nubilus (Dallas, 1851) is confirmed; two species, E. rotundus Yamamoto, 2003, and E. yunnanus Hsiao & Liu, 1977, are recorded for the first time from Korea. The record of E. kansuensis Hsiao & Liu, 1977, is based on misidentification of E. yunnanus, the former species is deleted from the Korean fauna. Photographs of habitus and genital segments of all the recognized Korean species are included, diagnoses and a key to the Korean species are provided. </P>
GPS를 이용한 정지/서행 순항 제어와 충돌회피 통합제어 알고리듬 개발 및 시험 차량 성능 평가
김원균(Wongun Kim),이승종(Seungjong Yi),이경수(Kyongsu Yi) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper presents development of the stop-and-go cruise control algorithm integrated with collision avoidance algorithm and test results obtained using an electric vehicle. Sliding control theory has been used to develop a vehicle speed and distance control algorithm. A vehicle desired velocity has been designed based on the vehicle speed and distance control algorithm. The collision avoidance control was designed based on time-to-collision and warning index. The motor control inputs have been directly derived from the sliding control law. The performance of the control algorithm has been investigated through computer simulation and vehicle tests using an electric vehicle.
하이브리드 인휠 차륜형 차량(6WD)의 최적 동력 제어 기반의 주행 제어 알고리즘 개발
김원균(Wongun Kim),이경수(Kyongsu Yi),이종석(Jongseok Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This paper describes development of stability driving control algorithm based on optimal power control for inwheeled vehicle equipped with series hybrid power system. A hybrid and electric vehicle have been actively developed to enhance energy efficiency all over the world. In addition, in order to improve vehicle stability and performance, hybrid and electric vehicles equipped with in-wheel motors have been studied. Driving control algorithm consists of determination, upper level and lower level control and power management layer. The determination layer calculates desired steering angle of each wheel and acceleration from driver’s manual inputs which contains steering angle, throttle and brake commands. The upper level control layer includes yaw stability and vehicle speed control algorithm in order to follow driver’s purpose. The lower level control layer distributes longitudinal tire forces. The power management layer determines desired engine-generator and battery output power in order to enhance energy efficiency. Computer simulations are conducted to verify performance improvement of the proposed driving control algorithm using Mtlab/simulink.
6WD/6WS 차량의 안정성 및 주행성을 위한 타이어 힘 최적 분배
김원균(Wongun Kim),강주용(Juyong Kang),이경수(Kyongsu Yi),이종석(Jongseok Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This paper describes optimal distribution controller to improve vehicle lateral stability and maneuverability for a six wheel driving/six wheel steering (6WD/6WS) vehicle. The driving controller consists of upper and lower level controller. The upper level controller based on sliding control theory determines front, middle steering angle, additional net yaw moment and longitudinal net force according to reference velocity and steering angle. The lower level controller intakes desired longitudinal net force, yaw moment and tire force information as an input and determines additional front steering angle and distributed longitudinal tire force on each wheel. This controller is based on optimal distribution control and has considered the friction circle related to vertical tire force and friction coefficient acting on the road and tire. Distributed longitudinal/lateral tire forces are determined in proportional to friction circle according to the changes of a driving condition. The response of the 6WD/6WS vehicle with the driving controller has been evaluated via computer simulations conducted using the Matlab/Simulink dynamic model. Computer simulations of a closed-loop driver model subjected to double lane change have been conducted to prove the improved performance of the proposed optimal distribution controller.
김원균(Wongun Kim),강주용(Juyong Kang),이경수(Kyongsu Yi),이종석(Jongseok Lee) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
This paper describes integrated driving controller for 8WD/4WS hybrid vehicle equipped with in-wheel driving motors. The integrated driving controller has been developed to improve maneuverability and lateral stability. It consists of upper level and lower level controller. The upper level controller contains calculation of reference yaw rate, yaw rate controller based on sliding control method and speed controller to satisfy driver’s steering and throttle demands. The lower level controller distributes longitudinal tire forces and restricts wheel slip diverge on severe driving conditions. Longitudinal tire forces are coordinated to improve maneuverability and stability using optimal control theory. This coordination is conducted considering the size of the friction circle related to vertical tire force and friction coefficient acting on road and tire. Distributed tire forces are determined in proportional to friction circle according to the change of a driving condition. Slip controller reduces applied torque input on each wheel in order to prevent excess of slip ratio. The response of the 8WD/4WS vehicle with the driving controller has been evaluated via computer simulations conducted using the Matlab/Simulink dynamic model. Computer simulation of a closed-loop driver model subjected to double lane change has been conducted to prove the improved performance of the integrated driving controller.
6WD/6WS 차량의 토크 분배 및 조향 제어 알고리즘 개발
김원균(Wongun Kim),강주용(Juyong Kang),이경수(Kyoungsu Yi),김용원(Yongwon Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, distribution of required forces and moments to 6WD6WS(6 Wheel driving/6 wheel steering) vehicle is handled as torque-distribution and steering control under the assumption that all six wheels can be independently steered, driven and braked. The inputs to the optimization process are the driver's commands (steering wheel, acceleration pedal), while the outputs are lateral and longitudinal forces on all six wheels. In the upper level controller, desired yaw rate and longitudinal vehicle speed are defined as driver's steering input and acceleration pedal input through first-order transfer function with appropriate time constants, and required forces and moments are determined by sliding control theory. The total traction forces and the total yaw moment should be generated by longitudinal and lateral tire forces. Longitudinal tire forces affect total yaw moment and lateral tire forces have effect on traction forces. It is necessary to optimize tire force distribution in order to improve performance, stability and energy consumption. Lateral tire forces have to satisfy cost function for minimizing slip angle. and longitudinal tire forces have to satisfy cost function related friction circles. Both cost functions are related to the required total lateral. longitudinal tire forces and total yaw moment. Wheel torque is determined by slip ratio control based on sliding control method.