Natural characteristic analysis of tracking frame of electro-optical theodolite by component modal synthesis method

Component modal Synthesis method used in natural characteristic analysis is introduced in this paper. The principle of component modal synthesis method is described. Based on this principle, the sub-structure of tracking frame of electro-optical theodolite is divided and FEM is set up. The natural frequency of tracking frame of electro-optical theodolite is calculated in the end. The results showed the component modal synthesis method has the advantage of less calculation load, higher accuracy, worth to popularize and application foreground.