Research on Active Steering Control Strategy of Steering-by-Wire System
Journal Title: International Journal of Applied Science and Mathematics - Year 2019, Vol 6, Issue 1
Abstract
Based on the software of CarSim and Simulink, the dynamics model of steering-by-wire (SBW) vehicle is established. In the steering control strategy of steering-by-wire (SBW) system, the variable-angle transmission ratio is designed by the fixed-gain method, and the front-active-steering (AFS) control strategy is superimposed to improve the steering stability of steering-by-wire (SBW) vehicle. A new active steering control strategy of steering-by-wire (SBW) vehicle is proposed in this paper. And the active steering strategy is the sliding mode control based on the radial basis function (RBF) neural network to make the adjustment of switching gain, and an additional front wheel angle is superimposed with a two-degree-of-freedom vehicle model as a reference. The simulation results show that the ideal transmission ratio of the steering system designed in this paper can improve the steering stability of the vehicle. The proposed steering control strategy can improve the steering stability of the vehicle. Compared with the traditional sliding mode control, the sliding mode control of the radial basis function (RBF) neural network proposed in this paper can effectively suppress the "chattering" phenomenon, and has stronger robustness and higher control effect.
Authors and Affiliations
Xiaozhi Feng, et al.
Keywords
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