Abstract: By using the concept of matrix and vector quantification-NORM, comprehensive error quanta (EPS) is firstly put forward to the error investigation of the error investigation of dynamic equation of elastic mechanisms which are subjected to arbitrary external forces and considered eight affective factors. The procedure presented in the paper can be decided which factor is more important (EPS>10%) and must be considered in the model. The investigation has laid foundation for the practical application of KED analysis.

Key words: 弹性动力学, 机构学, 综合误差