• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.6
• /
• pp.3357-3362
• /
• 2014

The purpose of this research was to develop a resonance electric power generator to harvest vibration energy while the vehicle is driving on a road surface. The electric power generator in the paper was designed using the resonance phenomenon to effectively respond to vibrations from the road surface, which is a comparatively small energy source. Vibration displacement analysis using MATLAB and transient analysis using Ansys MAXWELL, which is a commercial electromagnetic analysis program, was performed to predict the input velocity for the generator and verify the electric power generation. If this electric power generator is applicable to hybrid or electric vehicles, it can be valuable around an automotive electric system and help maintain the performance of the vehicle battery.

• Proceedings of the IEEK Conference
• /
• 2001.06a
• /
• pp.53-56
• /
• 2001

This paper has been developed a millimeter-wave radar to prevent car collision. This system needs to progress the problem as follows; (1) Increase of traffic accidents causing damage and injuries due to the increased number of motor vehicles and long distance driving, (2) Need for a device to help drivers who are in trouble due to bad weather conditions. (3) Need for a millimeter-wave radar as obstacles which need to be detected are small. This system is composited with some major technologies, Narrow beams to recognize obstacles or other objects, One-side circuit technology to prevent interference between electric waves, and Parts designed for radar products which are able to transmit millimeter - waves. The system has a various a application Field, Car distance auto-control system, prevent bump collision due to unexpected stoppage of the front car or careless driving, obstacle warning system, Car following system, and industrial and military purposes system. We have a looking forward to propose to develop field tests under various road conditions and hybrid car sensor by combining with other sensors

• Journal of IKEEE
• /
• v.22 no.4
• /
• pp.1073-1078
• /
• 2018

As interest in the 4th Industrial Revolution increases, the CPS, in which things existing in the reality and things existing in the virtual interact with each other, is attracting attention as an important technology. Complex systems such as electric vehicles, autonomous driving, smart factories, and smart grid system are considered as core technology fields of the 4th Industrial Revolution, and many types of research have been conducted to develop it. The reliability of the system is directly related to the safety of people in case of the autonomous driving, and verification of the actual vehicle's hardware and software of ADAS is essential. In this paper, we proposed distributed simulation middleware supporting HILS for reliable verification of the complex hybrid systems.

• Proceedings of the KIEE Conference
• /
• 2011.07a
• /
• pp.868-869
• /
• 2011

Domestic Foreign automaker's are focused on the high-efficiency, low emission cars development. On the way, the hybrid car is the first priority. Hybrid electric vehicle battery pack configurations, EV Relay one of the key components of the engine driving, to assist in the drive motor to supply electrical energy to the battery is a device for opening and closing of the output device. EV Relay determine the longevity and the replacement cycle, The EV Relay environmental conditions and duty cycle considering the reliability tests are essential requirements of many automotive companies to respond to RFQ, this test is essential. This paper using Maxwell Software for Prediction of the Ev Relay impulse, the theoretical data to obtain the impulse to develop methods for mechanical testing after to take advantage of it.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.20 no.6
• /
• pp.46-51
• /
• 2012

Fuel Cell Hybrid Vehicles (FCHVs) have become a major topic of interest in the automotive industry owing to recent energy supply and environmental problems. Several types of power management strategies have been developed to improve the fuel economy of FCHVs including optimal control strategy based on optimal control theory, rule-based strategy, and equivalent consumption minimization strategy (ECMS). The ECMS is applied in this study. This strategy is based on the heuristic concept that the usage of the electric energy can be exchanged to equivalent fuel consumption. This strategy is known as one of the promising solutions for real-time control of hybrid vehicles. The ECMS for an FCHV is introduced in this paper as well as the equivalent fuel consumption parameter. The relationship between the battery final state of charge (SOC) and the fuel consumption while changing the equivalent fuel consumption parameter is obtained for three different driving cycles. The function of the equivalent fuel consumption parameter is also discussed.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.12
• /
• pp.1-8
• /
• 2017

This paper presents the development of an adaptive cruise control (ACC) system, which is one of the typical advanced driver assist systems, for 4-wheel drive hybrid in-wheel electric vehicles. The front wheels of the vehicle are driven by a combustion engine, while its rear wheels are driven by in-wheel motors. This paper proposes an adaptive cruise control system which takes advantage of the unique driveline configuration presented herein, while the proposed power distribution algorithm guarantees its tracking performance and fuel efficiency at the same time. With the proposed algorithm, the vehicle is driven only by the engine in normal situations, while the in-wheel motors are used to distribute the power to the rear wheels if the tracking performance decreases. This paper also presents the modeling of the in-wheel motors, hybrid in-wheel driveline, and integrated ACC control system based on a commercial high-precision vehicle dynamics model. The simulation results obtained with the model are presented to confirm the performance of the proposed algorithm.

• Journal of Institute of Control, Robotics and Systems
• /
• v.20 no.3
• /
• pp.298-312
• /
• 2014

This paper describes control applications in automobiles. Many aspects of automotive applications of advanced control methods, which include suspension systems, stability control systems, engines, hybrid vehicle control systems, electric vehicle controls systems, advanced driver assistance systems and automated driving control systems, are reviewed. The control methods used in each area are briefly reviewed to help readers understand the applicability and effectiveness of these methods. In addition, some new trends in the research of automotive applications are described.

• Proceedings of the KIEE Conference
• /
• 2007.10a
• /
• pp.137-138
• /
• 2007

하이브리드 자동차용 리듐 배터리의 수명을 예측하기 위한 듀얼 슬라이딩 모드 관측기를 설계하는 방법에 대해서 논의한다. 단순화된 R-C 모델을 사용하여 리듐 배터리를 전기적으로 모델링하고, 듀얼 슬라이딩 모드 관측기를 설계하는 방법에 대해서 순차적으로 서술한다. 제안된 시스템의 구조는 단순하고 구현이 쉬운 장점이 있으며, 외란에 대해서 강인하다는 특징도 가지고 있다. Lyapunov 조건에 의한 관측기의 수렴성이 증명되고 시스템의 성능은 UDDS(Urban dynamometer driving schedule) 시험에 의해서 입증되었다. 제안된 시스템은 실제 주행 상황에서도 짧은 계산시간과 뛰어난 추적 성능을 보여주었다.

• Proceedings of the KIPE Conference
• /
• 2005.07a
• /
• pp.562-564
• /
• 2005

This paper presents the reasonable design parameters of a SRM for hybrid electric vehicle driving. For the design of SRM, the initial model is designed using the equivalent magnetic circuit method. In order to optimize the SRM for HEV. The initial model is redesigned by FEM with the variation of the stock length and turns of winding. This paper shows that a flat-topped current of a phase can be made from a change of the stack length and the number of turns for high efficiency, high average torque and a lower torque ripple. The change of current falling time as a variation of turn-off angle was shown by FEA. The iron loss and copper loss were described. The torque of the redesigned motor is suitable for low and high speed ranges to drive a HEV that was verified by the speed-torque curve.

• The Transactions of the Korean Institute of Power Electronics
• /
• v.5 no.3
• /
• pp.285-290
• /
• 2000

본 논문에서는 기존 HEV의 단점을 보완한 일정 엔진-발전기 출력/가변 전지 출력의 직렬형 HEV를 제안하고 직렬형 HEV 등가실험장치를 구성하였다. 제안된 연계운전방식은 엔진/발전기 출력을 일정하게 유지해서 전동기에서 요구하는 출력이 발전기를 출력보다 크면 전지에서 방전을 하고 전동기에서 요구하는 출력이 발전기 출력보다 작으면 전지에 충전을 하게된다. 내연기관 시뮬레이션과 로드 프로파일을 통한 실험결과로부터 적은 배기가스 방출량과 높은 에너지 효율을 갖는 직렬형 HEV 최적운전방식으로 이용될 수 있음을 증명하였다.