지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김현수
- 발행연도
- 2014
- 저작권
- 성균관대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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In this study, a downshift control algorithm for a 2 stage CVT HEV during regenerative braking was proposed. First, 2 stage CVT HEV shift performance simulator was developed based on the dynamic models of the 2 stage CVT HEV powertrain.
For downshift control, a drive shaft torque state observer was proposed based on the downshift transient model for torque phase and inertia phase. State equations for both phases were obtained. Using the state equations, the drive shaft torque observer was proposed with the minimum order and performance of the observer was verified by the hybrid bench tester.
Down shift characteristic during the regenerative braking was investigated to develop the downshift control algorithm to improve SQ(shift quality). The shift quality is related to variation of the vehicle deceleration which is determined by the friction brake force and the estimated drive shaft torque through the observer. Therefore, using the drive shaft observer, the downshift SQ control algorithm was proposed through the control of the motor torque and friction brake force.
Performance of the proposed downshift SQ control algorithm was investigated using a 2 stage CVT shift performance simulator and hybrid bench tester. Experiment and simulation were carried out for two braking cases : (1) only by the motor regenerative braking and (2) by the motor regenerative braking and friction brake. It was found from the simulation and experiment that the drive shaft torque and vehicle deceleration variation were reduced by the downshift SQ control algorithm through the control of the motor regenerative torque and friction brake force during the downshift.
For downshift control, a drive shaft torque state observer was proposed based on the downshift transient model for torque phase and inertia phase. State equations for both phases were obtained. Using the state equations, the drive shaft torque observer was proposed with the minimum order and performance of the observer was verified by the hybrid bench tester.
Down shift characteristic during the regenerative braking was investigated to develop the downshift control algorithm to improve SQ(shift quality). The shift quality is related to variation of the vehicle deceleration which is determined by the friction brake force and the estimated drive shaft torque through the observer. Therefore, using the drive shaft observer, the downshift SQ control algorithm was proposed through the control of the motor torque and friction brake force.
Performance of the proposed downshift SQ control algorithm was investigated using a 2 stage CVT shift performance simulator and hybrid bench tester. Experiment and simulation were carried out for two braking cases : (1) only by the motor regenerative braking and (2) by the motor regenerative braking and friction brake. It was found from the simulation and experiment that the drive shaft torque and vehicle deceleration variation were reduced by the downshift SQ control algorithm through the control of the motor regenerative torque and friction brake force during the downshift.
목차
목 차* List of figures and tables제 1 장 서 론1.1 연구 배경 11.2 연구 필요성 61.3 연구 목적 7제 2 장 2 stage CVT 하이브리드 자동차 변속 성능 시뮬레이터 개발2.1 2 stage CVT 시스템 82.1.1 배리에이터 82.1.2 복합유성기어 112.1.3 유압 제어 밸브 162.2 HEV 파워트레인 시스템 222.2.1 엔진 222.2.2 엔진 클러치 242.2.3 구동 모터 242.2.4 차량 모델 252.3 2 stage CVT 변속 성능 시뮬레이터 개발 27제 3 장 2 stage CVT 회생 제동중 하향 변속 SQ 제어 알고리즘 개발3.1 유성기어 하향 변속 동적 해석 303.1.1 토크 영역 303.1.2 관성 영역 333.2 드라이브샤프트 토크 관측기 개발 353.2.1 토크 영역 353.2.2 관성 영역 413.3 회생제동중 유성기어 하향 변속 SQ 제어 알고리즘 개발 443.3.1 2 stage CVT 변속비 제어 및 회생제동 협조 제어 알고리즘 443.3.2 회생제동중 하향 변속 SQ 제어 알고리즘 463.3.3 0.1g case 543.3.4 0.2g case 583.3.5 0.4g case 61제 4 장 2 stage CVT 회생제동중 하향 변속 SQ 제어 알고리즘 성능 평가4.1 2 stage CVT 변속 SQ 제어 알고리즘 성능 시험 장치 644.1.1 구동시스템 644.1.2 2 stage CVT 694.1.3 회전관성 및 EHB 694.1.4 운용시스템 724.2 2 stage CVT 회생제동중 하향 변속 SQ 제어 알고리즘 성능 시험 754.2.1 2 stage CVT 회생제동중 하향 변속 SQ 제어 알고리즘 성능 시험 방법 754.2.2 EHB 성능 시험 764.2.3 관측기 성능 시험 764.2.4 제동 시험 1 ? 모터 회생 제동 814.2.5 제동 시험 2 ? 모터 회생 제동 + EHB 86제 5 장 결 론 91참고문헌 93ABSTRACT 96
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