CAJ | 학술논문

研究高速行驶方向盘摆振机理，控制策略，识别与测试方法。根据实际工程问题，建立某摆振车辆的多体仿真模型，分析方向盘摆振的影响因素及优化措施。为确定传递路径上各影响因素对摆振的影响程度，开展方向盘摆振对影响因素的灵敏度分析，结果表明前摆臂后衬套刚度、前摆臂前衬套刚度、副车架后衬套刚度是影响摆振的敏感因子。通过DOE正交试验优化系统衬套参数，该车方向盘摆振幅值降低近52%，有效地抑制摆振现象。最后开展实车道路试验，验证仿真分析的准确性。该研究提供一套行之有效的高速方向盘摆振控制方法，并取得良好的工程应用效果。
연구고속행사방향반파진궤리，공제책략，식별여측시방법。근거실제공정문제，건립모파진차량적다체방진모형，분석방향반파진적영향인소급우화조시。위학정전체로경상각영향인소대파진적영향정도，개전방향반파진대영향인소적령민도분석，결과표명전파비후츤투강도、전파비전츤투강도、부차가후츤투강도시영향파진적민감인자。통과DOE정교시험우화계통츤투삼수，해차방향반파진폭치강저근52%，유효지억제파진현상。최후개전실차도로시험，험증방진분석적준학성。해연구제공일투행지유효적고속방향반파진공제방법，병취득량호적공정응용효과。
The steering wheel nibble mechanism of vehicles at high speeds and the corresponding control strategy, identification and measurement methodology were studied. According to the practical engineering problem, a multi-body dynamics model for nibble simulation in a problematic vehicle was established. The influencing factors and the optimization measures for the steering wheel nibble were analyzed. In order to determine the contribution of the influencing factors to the nibble in the transfer paths, the sensitivity of the steering wheel nibble to the influencing factors were investigated. The results show that the rear bushing stiffness and the front bushing stiffness of the front control arm, and the rear bushing stiffness of the sub-frame are the sensitivity factors which influence the steering wheel nibble. Optimizing bushing stiffness parameters through DOE approach, the magnitude of the steering wheel nibble of the problematic vehicle was reduced by 52 %, and the nibble phenomenon was effectively suppressed. Finally, a road test was done for the vehicle and the correctness of the simulation analysis was verified. This study provides an effective approach for controlling steering wheel nibble of vehicles.