Research on Four-wheel-Steering Automobile Based on Simulated Annealing PID Algorithm

In order to enhance automobiles´ steering performance, four-wheel steering system was researched in this paper. Firstly, mathematical model of four-wheel steering was built and then transfer function was deduced. On this basis, the simulation model of four-wheel steering was built through Matlab/Simulink. Furthermore, simulated annealing PID algorithm was designed for four-wheel steering system. Finally, simulation experiments were carried out, whose results indicated that simulated annealing PID algorithm could enhance the performance of four-wheel steering system in the working conditions at both low and high speed.