A research on the lateral stability control of vehicle based on the resultant force calculation and allocation of tire

作者：Xia, Guang; Tang, Xiwen; Chen, Wuwei; Sun, Baoqun; Zhao, Linfeng

来源：Qiche Gongcheng/automotive Engineering, 2015, 37(11): 1298-1306.

• Allocation algorithm
• Lateral stability controls
• Numerical optimizations
• Real-time calculations
• Resultant forces
• Sliding mode variable structure control
• Vehicle lateral stabilities
• Yaw moment

In view of that the calculation and allocation algorithm of tire resultant force is only suitable for the vehicles with four-wheel independent braking and steering, and the achievable range of longitudinal resultant force and yaw moment of tire is limited by road adhesion coefficient, a control strategy for vehicle lateral stability with real-time calculation, adjustment and dynamic allocation of tire's longitudinal resultant force and yaw moment is proposed. Taking into account the calculation error of linear feedback, offline numerical optimization and nonlinear programming are adopted to determine the achievable range of tire's longitudinal resultant force and yaw moment, the resultant forces and moments calculated are adjusted into the achievable range and dynamically allocated. The controller for slip ratio and front wheel sideslip angle is designed to make tire friction force track each component force without estimating the side force of rear wheel while ensuring accuracy. Finally a simulation is conducted and verified by a driver-in-the-loop test based on LabVIEW PXI and veDYNA. The results show that the lateral stability control of vehicle based on resultant force calculation and allocation can effectively enhance the track maintenance capability of vehicle, improve vehicle stability on low adhesion road, with a control effect better than that of sliding mode variable structure control.

• 出版日期2015
• 单位合肥工业大学