가변 캠버 현가기구를 이용한 차량 조종안정성 향상에 관한 연구
- Alternative Title
- A Study on Improving the Vehicle Handling Performance by using Variable Camber Suspension
- Abstract
- A camber angle generating mechanism for front and rear suspension is suggested. A full vehicle model with camber angle generating device by using ADAMS/Car is modeled. Step steer simulations are carried out for investigating the effects of vehicle handling performance due to camber angle change of front and rear wheel. On the other hand, The bicycle model is employed to establish the control strategy for front camber angle mechanism. The referenced yaw rate to make control input is derived. A control map is suggested for the camber angle control of double-knuckle mechanism. To carry out the control simulation, MATLAB/Simulink is employed. The effect of the camber angle control is analyzed from the computer simulation. According to the results, the camber angle of suspension affects the vehicle handling performance during both simulations. Therefore, when the vehicle makes the right turn or left turn, left and right wheels should have the proper orientation for improving the handling performance, respectively.
Keywords : Handling Performance(조종안정성), Camber angle(캠버각), Kinematic analysis(기구해석), Bicycle model(자전거모델), Vehicle dynamics(차량동역학)
- Issued Date
- 2011
- Awarded Date
- 2011. 2
- Type
- Dissertation
- Publisher
- 부경대학교
- Alternative Author(s)
- Park,Seong Jun
- Department
- 대학원 메카트로닉스공학과
- Advisor
- 손정현
- Table Of Contents
- 목 차
Abstract ································································································································· 1
1. 서론 ································································································································· 2
1.1 연구 배경 ················································································································· 2
1.2 연구 목적 및 범위··································································································· 3
2. 캠버 생성 메카니즘······································································································· 4
2.1 후륜 캠버 생성기구································································································· 4
2.2 전륜 캠버 생성기구································································································· 5
3. 주행중 캠버각이 차량 조종안정성에 미치는 영향분석········································ 7
3.1 전차량 모델링 ········································································································ 7
3.1.1 전륜 모델링····································································································· 7
3.1.2 후륜 모델링····································································································· 7
3.1.3 조향장치 모델링····························································································· 8
3.1.4 파워트레인 및 타이어 모델링······································································ 8
3.2 후륜 캠버각이 조종안정성에 미치는 영향························································· 9
3.2.1 스텝 조향 시뮬레이션···················································································· 9
3.2.2 펄스 조향 시뮬레이션··················································································· 12
3.3 전륜 캠버각이 조종안정성에 미치는 영향························································ 17
3.3.1 스텝 조향 시뮬레이션··················································································· 17
3.4 전후륜 캠버각이 조종안정성에 미치는 영향···················································· 21
3.4.1 시뮬레이션 조건···························································································· 21
3.4.2 조향입력 직후 캠버입력 시뮬레이션························································ 22
3.4.3 조향입력 2초 후 캠버입력 시뮬레이션···················································· 25
4. 전륜 캠버 제어············································································································· 28
4.1 전륜캠버 제어 알고리즘 ····················································································· 28
4.2 전륜캠버 제어 시뮬레이션··················································································· 30
4.2.1 피쉬훅 시뮬레이션························································································ 30
4.2.2 차선 변경 시뮬레이션··················································································· 36
5. 이중너클 캠버 제어기구····························································································· 43
5.1 이중너클 구조설계································································································· 43
5.2 이중너클 캠버 제어 알고리즘 ············································································ 44
5.3 이중너클 캠버 제어 시뮬레이션·········································································· 45
5.3.1 스텝 조향 시뮬레이션·················································································· 45
6. 결론 ······························································································································· 49
참고문헌 ···························································································································· 51
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