Development of an Advanced Stability Control System of 4WD Electric Vehicle with In-Wheel-Motors 2016-01-1671
Direct yaw moment control can maintain the vehicle stability in critical situation. For four-wheel independently driven (4WD) electric vehicle with in-wheel motors (IWMs), direct yaw moment control (DYC) can be easily achieved. A fairly accurate calculation of the required yaw moment can improve vehicle stability. A novel sliding mode control (SMC) technique is employed for the motion control so as to track the desired vehicle motion, which is it for different working circumstances compared to the well-used traditional DYC. Through the weighted least square algorithm, the lower controller is used to determine the torque properly allocated to each wheel according to the desired yaw moment. Several actuator constraints are considered in the control strategy. In addition, a nonlinear tire model is utilized to improve the accuracy of tire lateral force estimation. Then, simulations are carried out and the values of vehicle states are compared. The simulation results show that the control system proposed can effectively improve the handling stability of the vehicle.
Citation: Han, D., Yan, Z., Xiao, F., and Li, S., "Development of an Advanced Stability Control System of 4WD Electric Vehicle with In-Wheel-Motors," SAE Technical Paper 2016-01-1671, 2016, https://doi.org/10.4271/2016-01-1671. Download Citation
Author(s):
Dejian Han, Zhen Yan, Feng Xiao, Shaokun Li
Affiliated:
Shandong University, Jinan GTmech Mech. and Elec. Eqpt .Co., Ltd., Jilin University
Pages: 7
Event:
SAE 2016 World Congress and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Electric vehicles
Stability control
Control systems
Yaw
Mathematical models
Simulation and modeling
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »