摘要
在Matlab/Simlink下建立了八自由度车辆动力学模型,针对车辆转弯制动工况,采用模糊控制方法,设计了基于滑移率的ABS控制算法和分别以质心侧偏角、横摆角速度及二者加权为控制目标的直接横摆力矩控制算法。并对车辆转弯制动工况下车辆稳定性控制做了仿真分析。利用稳定性判定式,对车辆转弯制动稳定性做出了判定。结果表明,车辆转弯制动时ABS控制并不能达到稳定性控制的要求,而采用以质心侧偏角和横摆角速度加权为控制目标的直接横摆力矩控制算法能更好地达到稳定性控制的目的。
Eight degrees of freedom vehicle model was established in Matlab/Simlink. In order to control vehicle stability under turning braking, four control methods, ABS control algorithm based on the slip rate, the direct yaw torque control algorithms based on control objective of sideslip angle and yaw rate respectively, the direct yaw torque control algorithm base on control objective of weighted sideslip angle and yaw rate, were proposed with fuzzy control strategy. The vehicle turning braking stability was simulated by computer. The turning braking stability was judged by the stability judging formula. The results show that ABS can not meet the demand of the turning braking stability, but the direct yaw torque control algorithm based on control objective of weighted sideslip angle and yaw rate can satisfy the vehicle turning braking stability.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第13期4135-4139,共5页
Journal of System Simulation
基金
重庆市科委重点自然科学资金项目(CSTC2006BA6017CSTC2006BB6004)
关键词
车辆
稳定性控制
转弯制动
模糊控制
操纵稳定性
vehicles
stability control
turning braking
fuzzy control
handling Stability
