Analysis of the Reliability of the Improvement to Ill-Posed Problems in the Vehicle Collision Model

To verify the reliability of the improvement to ill posed problems in the vehicle collision model, a new method was established by the perturbation theory. The method can be applied to analysising the reliability of improved models for ill posed problems. Example results show that result errors of improved models are not more than 2.92% in ill-posed ranges, when there are 1°error in pre-impact angles and 1% error at impact points. Errors of simulated results can be controlled by using improved models in ill-posed ranges and ill-posed problems can be solved availably.