LTV-RBF Approach for Yaw Stability Control of Distributed Drive Electric Vehicles

Xiang Gao, Cheng Lin, Sheng Liang, Yu Tian

Abstract


This paper proposed a torque distribution strategy based on linear time-varying radial basis function (LTVRBF) neural networks for yaw stability control of electric vehicles equipped with in-wheel motors. The desired yaw rate is calculated by the two-degree-of-freedom (2- DOF) bicycle dynamic model. The influence of the timevarying steering angle is considered for reducing the yaw rate error. To solve this problem, the constant connection weight of conventional RBF networks is converted into a time-varying variable which is used to track the reference trajectory and optimize the torque distribution. The torques of in-wheel motors are restricted in high efficiency range to improve the system energy efficiency. Simulation results of the proposed torque distribution strategy based on dSPACE simulator show that LTV-RBF networks can effectively track the reference yaw rate and stabilize the system.

Keywords


distributed drive electric vehicles, yaw stability control, linear time-varying radial basis function (LTV-RBF), torque distribution strategy


DOI
10.12783/dteees/iceee2018/27881

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