等透射率冲击部件动态反演综合中的误差分析  

Error Analysis of Impact Parts with the Same Wave Transmissivity in the Process of Inverse Synthesis

作　　者：朱萍玉[1] 李学军[1] 刘德顺[1] 彭佑多[1] 

机构地区：[1]湖南科技大学机电工程学院,湘潭411201

出　　处：《中国机械工程》2004年第1期79-82,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目 (598750 73 );湖南省自然科学基金资助项目 (0 1JJY2 0 50

摘　　要：针对弹性杆形部件中的作用力和速度传播特征矩阵的构造过程 ,即多项式根的替换操作 ,采用减小运算中舍入误差的树型分析法 ,分析了等透射率冲击部件动态反演综合中误差的来源 ,重点研究了传递矩阵中多项式系数的两种求解方法 ;结合多项式零点条件的意义 ,探讨了多项式的良态和病态零点对反演解的影响 ,从而进一步研究了离散单元数Starting from constructuring the characteristic matrix of the force and the velocity in the method of substituting the roots of the polynomial in inverse design process, the error sources were analyzed in the process by applying a tree analysis approach to decrease rounding errors in calculation. Two methods to gain the coefficients of polynomial were studied as emphases. At the same time, the impact of normal and stiff solutions of polynomial to inverse design parameters was discussed considering the meaning of roots of polynomial. Especially the distribution of coefficients of polynomial has effects on the solution to inverse design. The relation between discrete segment number N and design precision of parts was also discussed.

关 键 词：等透射率 冲击部件 反演 误差 

分 类 号：TH113[机械工程—机械设计及理论]