摘要
汽车转向出现横向侧倾时,主动横向稳定杆能够实时计算并输出相应的力矩,抑制悬架弹簧变形,从而使车辆拥有良好的侧倾运动性能。基于滑模变结构控制理论的主动横向稳定杆相较于PID算法及模糊控制算法拥有更好降低车辆横向倾斜的能力,但是在系统状态到达滑模面时总伴随着抖振现象。对此,在控制器滑模面定义过程中引入了分数阶微积分理论,利用模糊规则实现对切换增益参数的自适应调整。通过进行Carsim-Simulink联合仿真,验证了该算法对汽车侧倾角有较好的控制效果,并抑制了抖振现象。
When the vehicle steering is transversely tilting,the active anti-roll bar can output the anti-roll torque and suppress spring deformation of the suspension system,thus enabling the vehicle to have good tilting performance.Based on the sliding mode variable structure control theory,the active lateral stabilizer has a better ability to reduce the lateral tilt of the vehicle than the PID algorithm and the fuzzy control algorithm,but it is always accompanied by the chattering phenomenon when the state of the system reaches the sliding surface.In this paper,a fuzzy fraction sliding mode control method for active anti-roll bar is proposed,the fractional calculus theory is introduced into the sliding surface definition of the controller,and the fuzzy logic is used to adjust the switching gain parameters adaptively.Carsim-Simulink joint simulation is carried out to verify that the proposed control algorithm can reduce roll angle and suppress chattering phenomenon.
作者
郭存涵
苏小平
缪小冬
Guo Cunhan;Su Xiaoping;Miao Xiaodong(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China)
出处
《机械科学与技术》
CSCD
北大核心
2019年第7期1019-1023,共5页
Mechanical Science and Technology for Aerospace Engineering
关键词
模糊控制
分数阶微积分
滑模控制
主动横向稳定杆
侧倾
fuzzy logic
fractional calculus
sliding mode control
active anti-roll bar
roll
joint simulation
chattering phenomenon
