摘要
为了解决汽车碰撞事故再现模型病态性的问题，采用汽车碰撞模拟法分析了参数变化对模型病态性的影响．以矩阵扰动理论为基础分析了模型病态性的本质，给出了参数扰动条件下模型解的相对误差数学表达式，提出了如何处理原始方程组解决模型病态性的方法，通过计算实例证明了该方法的有效性。
In order to solve ill-conditioned problem in vehicle impact traffic accident reconstruction models, the paper analyzed the effects of parameter change on the model ill-condition by using the vehicle impact simulation method; studied the model ill-condition nature based on the matrix disturbance theory; inferred the relative error equation with some parameter disturbance; put forward the method for solving the model ill-condition by improving the original linear system of equations, the result of calculating example shows that it is an effective method.
出处
《北华大学学报（自然科学版）》
CAS
2006年第5期468-473,共6页
Journal of Beihua University（Natural Science）
关键词
交通事故
模型病态性
事故分析模型
条件数
Traffic accident
Model ill-condition
Accident analysis model
Condition number
