Coordination of active steering, driveline, and braking for integrated vehicle dynamics control
Coordination of active steering, driveline, and braking for integrated vehicle dynamics control
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DOI：
10.1243/09544070jauto265
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发表时间：
2006-10-01
影响因子：
1.7
通讯作者：
Manning, W. J.
中科院分区：
文献类型：
--
作者：
He, Junjie;Crolla, D. A.;Manning, W. J.
本文提出了一种通过协调主动前轮转向（AFS）和动态稳定性控制（DSC）子系统来提高汽车操纵稳定性的集成车辆动力学控制系统。DSC子系统包括基于传动系的DSC子系统、基于制动器的DSC子系统和基于传动系加制动器的DSC子系统。首先研究了前进速度和横向加速度变化对车辆横向动力学的影响。然后分别采用滑模控制技术和相平面法设计了AFS控制器和DSC控制器，AFS控制器用于改善车辆在中低范围横向加速度下的转向性能，DSC控制器用于在极端驾驶情况下保持车辆的稳定性。基于这两个独立开发的控制器，提出了一种基于规则的集成方案，通过最大限度地减少两个子系统之间的相互作用和扩展单个子系统的功能来优化车辆的整体性能。计算机仿真结果证实了所提出的控制系统的有效性和车辆操纵稳定性的整体改善。
An integrated vehicle dynamics control system which aims to improve vehicle handling and stability by coordinating active front steering (AFS) and dynamic stability control (DSC) subsystems is developed in this paper. The DSC subsystem includes driveline-based, brake-based, and driveline plus brake-based DSC subsystems. The influence of varying forward speed and lateral acceleration on the lateral vehicle dynamics is investigated first. The AFS controller, which is used to improve vehicle steerability in the low to mid-range lateral acceleration, and the DSC controller, which manages to maintain vehicle stability during extreme driving situations, are then designed by using the sliding mode control (SMC) technique and phase plane method respectively. Based on the two independently developed controllers, a rule-based integration scheme is proposed to optimize the overall vehicle performance by minimizing interactions between the two subsystems and extending functionalities of individual subsystems. Computer simulation results confirm the effectiveness of the proposed control system and the overall improvements in vehicle handling and stability.