Multi-axis Trailer Steering System Dynamic Analysis Based on Uncertainty

To determine the actual process of steering uncertainty factors on multi-axle trailer's steering system effects,a steering model of the steering shaft was established by analyzing the structure of multi-axis trailer's steering system.The elasticity of the horizontal steering rod and the factor of uncertainty were put into the model,the dynamic equations of the steering axle were deduced,and were solved by the use of MATLAB.Results show that the max angle deviation caused by the factor of uncertainty is less than 4 degree,and it can't cause too much influence to the system.