http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
심규현(K. H. Sim),이화영(H. Y. Lee),황성호(S. H. Hwang) 유공압건설기계학회 2015 유공압건설기계학회 학술대회논문집 Vol.2015 No.6
This paper presents a control algorithm for semi-active suspension of utility vehicle to improve its ride comfort. Linear Quadratic Regulator (LQR) is a full state feedback control algorithm, but the state variables of real system are not fully measured by sensors. Using Kalman filter as an estimator, the state variables are estimated and the LQR control algorithm is adapted to the system, which is Linear Quadratic Gaussian (LQG) control algorithm. It can be applied to the real vehicle system for improvement of the ride comfort. Two rear suspensions are independently developed with the control algorithm. Hydraulic system of the suspension is designed using SimulationX and the full vehicle model with control algorithms is constructed using MATLAB/Simulink. Finally, the simulation is conducted by combining the vehicle model and the hydraulic suspension model.
인공신경망을 이용한 플러그인 하이브리드 차량의 동력분배제어전략 개발
심규현(K. H. Sim),이수지(S. J. Lee),이지석(J. S. Lee),남궁철(C. Namkoong),한관수(K. S. Han),황성호(S. H. Hwang) 유공압건설기계학회 2015 드라이브·컨트롤 Vol.12 No.3
The plug-in hybrid electric vehicle has a high fuel economy and can be driven long distances. Its different modes include the electric vehicle, hybrid electric vehicle, and only engine operating mode. A power management strategy is important to determine which mode should be selected. The strategy makes the vehicle more efficient using appropriate power sources for driving. However, the strategy usually needs a driving speed profile which is future driving cycle. If the profile is known, the strategy easily determines which mode is driven efficiently. However, it is difficult to estimate the speed profile for a real system. To address this problem, this paper proposes a new power distribution strategy using a neural network. The average speed and driving range are used as input parameters to train the neural network system. The strategy determines a limit for the use of the battery and the desired power is distributed between the engine and the motor simultaneously. Its fuel economy can increase by improving the basic strategy.
디젤 플러그인 하이브리드 자동차 연비평가 시뮬레이터 개발
정호운(H. U. Jeong),심규현(K. H. Sim),김동렴(D. R. Kim),정래상(R. S. Jeong),한관수(K. S. Han),황성호(S. H. Hwang) 유공압건설기계학회 2014 유공압건설기계학회 학술대회논문집 Vol.2014 No.9
Diesel engines have some advantages over gasoline engines. Diesel engines can produce more torque in low speed and have higher fuel efficiency and make less carbon dioxide. There have been many studies that improve fuel efficiency of diesel engines, and diesel hybrid system emerges as most practical method out of the studies. Plug-in Hybrid Electric Vehicles (PHEV) can recharge batteries from urban electric grid system. PHEV can drive with only motor for some distance, which increases fuel efficiency. To evaluate fuel efficiency of different types of diesel PHEV systems, important components of PHEV power split system have been modeled by MATLAB Simulink. Torque and efficiency characteristics of diesel engine and Motor/Generator uses resized actual experimental data. Batteries, Clutches, Transmissions have been modeled as equations. Finally a DCT TMED system has been composed by adding controller of each module to verify system modeling.