Journal of Jilin University(Engineering and Technology Edition) ›› 2026, Vol. 56 ›› Issue (9): 2502-2514.doi: 10.13229/j.cnki.jdxbgxb.20250276

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Vehicle stability optimization control considering active rear wing aerodynamic performance

De-jun WANG1(),Chao-nan HAN1,Shou-qing ZHANG1,Ying LI2(),Jing ZHAO2   

  1. 1.College of Communication Engineering，Jilin University，Changchun 130022，China
    2.China FAW Group Corporation，Changchun 130022，China
  • Received:2025-04-01 Online:2026-09-01 Published:2026-09-07
  • Contact: Ying LI E-mail:djwang@jlu.edu.cn;liying11@faw.com.cn

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Abstract:

In order to solve the problem that the adhesive force between the vehicle tire and the ground tends to be saturated under high speed or low adhesion road surface， this paper puts forward a method to establish the driving feasible region considering the action of the active rear wing and control the stability of the vehicle by the active rear wing. Firstly， based on the analysis of the aerodynamic performance of the active rear wing， the aerodynamic lift and aerodynamic drag brought by the active rear wing are analyzed and decomposed into the vehicle model. Secondly， based on the vehicle model with active rear wing， the driving feasible region of active rear wing is established with the tire friction circle as the constraint. Finally， a layered controller was designed based on the active rear wing， and a joint simulation platform of CarSim and Simulink was built. physical simulation experiments were carried out under different working conditions. The results show that the active rear wing can improve the distribution of vertical loads on vehicle tires， expand the feasible range of vehicle driving， and while accurately completing trajectory tracking， enhance the stability and safety of the vehicle.

Key words: active aerodynamics, active rear wing, driving feasible region, model predictive control, vehicle stability control

CLC Number: 

  • TP273

Fig.1

Active rear wing force diagram"

Fig.2

A three-degree-of-freedom vehicle model with active rear wing"

Fig.3

Tire friction circle restraint"

Fig.4

Control system structure"

Table 1

Parameter list of vehicle model"

参数符号单位数值
车辆质量mkg1 359.8
质心与地面高度hm0.512
前轮轮距dfm1.414
后轮轮距drm1.414
前轴间距lfm1.062
后轴间距lrm1.485
前轮侧偏刚度KfN/rad66 930.0
后轮侧偏刚度KrN/rad62 700.0
整车转动惯量Izkg·m21 992.54

Table 2

Range of active rear wing force"

参数数值/N
主动尾翼产生气动阻力范围-1 500~-200
主动尾翼产生下压力范围-600~2 000

Fig.5

Front wheel angle input （case 1）"

Fig.6

Vehicle status control effect （case 1）"

Fig.7

Comparison of motion trajectories （case 1）"

Fig.8

Comparison of Vehicle drive feasible region （case 1）"

Fig.9

Front wheel angle input （case 2）"

Fig.10

Vehicle status control effect （case 2）"

Fig.11

Comparison of motion trajectories （case 2）"

Fig.12

Comparison of vehicle drive feasible region （case 2）"

Fig.13

Front wheel Angle input （case 3）"

Fig.14

Vehicle status control effect （case 3）"

Fig.15

Comparison of motion trajectories （case 3）"

Fig.16

Comparison of vehicle drive feasible region （case 3）"

Fig.17

Front wheel angle input （case 4）"

Fig.18

Vehicle status control effect （case 4）"

Fig.19

Comparison of motion trajectories （case 4）"

Fig.20

Comparison of vehicle drive feasible region （case 4）"

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