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조한상(Hansang Jo),장욱진(Wookjin Jang),박진호(Jinho Park),임원식(Wonsik Lim),박영일(Yeongil Park),이장무(Jangmoo Lee) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.6
Dynamic simulation techniques are developed to analyze the shift characteristics of vehicle powertrain with automatic transmissions. In this study, the mathematical modeling of powertrain components such as engine, clutch system, planetary gear system and road load, is presented for the simulation. The clutch engagement condition, which determines the degree of freedom of the system, is also proposed. By using a detailed nonlinear model of torque converter, it is possible to accurately analyze the extremely transient state such as the shift. Dynamo-based experiments are carried out to prove the validity of the proposed simulation techniques. Using the developed simulation program, the effects of the dynamic design variables and the control conditions, focused on the shift, are evaluated to improve the driving comfortability.<br/>
버스용 병렬형 하이브리드 동력전달계의 개발 (Ⅲ) 제 3 편: 최적 주행 제어 알고리듬
조한상(Hansang Jo),이장무(Jangmoo Lee),박영일(Yeongil Park) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.6
Described in this paper is an optimal driving control algorithm which was focused on the improvement of fuel economy and the minimization of pollutant emissions in the parallel type hybrid drivetrain system for transit bus. For the energy balance among components such as engine, induction machine and battery, the algorithm for power split ratio determination is proposed. When it is implemented in the hybrid electric control unit(HECU), using the sub-optimal method and the approximate technique, it is possible to save the memory, to shorten the calculation time, and to achieve the efficient driving actually. A Shift strategy for automated manual transmission is the other side of the driving control algorithm. It enables to select the optimal gear by using several shift maps which were predefined from the proposed method in this paper. As a results of driving simulation, it is proved that these algorithms make the hybrid drivetrain system to reduce the fuel consumption and emissions considerably and to have the ability to the efficient use of battery.<br/>
중복안정성 확보를 위한 항공전자 소프트웨어 설계방안 연구
임성신,조한상,김종문,송재일,Lim, Sungshin,Jo, Hansang,Kim, Jongmoon,Song, Chaeil 항공우주시스템공학회 2014 항공우주시스템공학회지 Vol.8 No.2
The aircraft manufacturers are constantly driving to reduce manufacturing lead times and cost at the same time as the product complexity increases and technology continues to change. Integrated Modular Avionics (IMA) is a solution that allows the aviation industry to manage their avionics complexity. IMA defines an integrated system architecture that preserves the fault containment and 'separation of concerns' properties of the federated architectures. In software side, the air transport industry has developed ARINC 653 specification as a standardized Real Time Operating System (RTOS) interface definition for IMA. It allows hosting multiple applications of different software levels on the same hardware in the context of IMA architecture. This paper describes a study that provided the avionics software design for separation of fault and backup of core function to reduce workload of pilot with cost efficiency.
박진호(Jinho Park),공진형(Jinhyeong Kong),조한상(Hansang Jo),박영일(Yeongil Park),이장무(Jangmoo Lee) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_2
The real driving fuel consumption rate of a vehicle is mostly different from the authorized fuel consumption rate. The authorized fuel consumption rate is measured by driving a car on chassis dynamometer following the driving mode which consists of only time-velocity profile. Because road grade has an important influence on the fuel consumption rate, in this paper with the driving modes considering road grade the simulation program to predict the real driving fuel consumption rate is developed. To verify the simulation program. on-road car tests are carried out and the results of the simulation are analysed and compared with those of the experiments