| 제목 |
차량 모델을 고려한 자동변속기 차량의 변속 과도 특성 분석 |
| 분야 |
차량동역학 및 제어 |
| 언어 |
Korean |
| 저자 |
공진형(서울대학교), 임원식(서울산업대학교), 김정윤(디엔엠테크놀로지), 박영일(서울산업대학교), 이장무(서울대학교), 박진호(엔지비) |
| Key Words |
Power transmission system(동력전달계), Automatic transmission(AT, 자동변속기), Vehicle body(차체), Engine/AT housing(엔진/AT 하우징), On-road car test(실차 실험), Shifting transients(변속 과도 특성), Ride comfort(승차감) |
| 초록 |
In this study, a mathematical model for analyzing the shifting transients of the passenger car with an automatic transmission is proposed. The proposed model comprises a power transmission system and a vehicle system, which are coupled. In order to extract the modeling parameters, on-road car test is carried out. The model is composed of a detailed powertrain, an engine/AT housing, a simplified suspension system, tires and a vehicle body model. On the test, the vehicle accelerations and pitch ratio are measured by using accelerometers and a gyro sensor. The speeds, the brake signal, and the throttle position are taken from sensors which already exist in the vehicle. Considering natural frequencies, which is calculated from the measured accelerations, and the characteristic equation, vehicle model parameters are identified. Dynamic behaviors during upshift or downshift are simulated using the proposed vehicle model. By comparing and analyzing the simulation result and on-road car test data, the vibration of the Engine/AT housing influences the shifting transients. The effect of model parameters are also studied. Among model parameters, the location of engine mountings influences the vibration of the vehicle body. |
| 원문(PDF) |
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