Dynamic Modeling and Vibration Characteristics Analysis of a Large-Scale Photoelectric Theodolite Tracking Frame

In this paper, the experimental modes of a large-scale photoelectric theodolite tracking frame are presented. On basis data and gradient-less optimization approach, modeling strategy parameterized equivalent dynamic finite element model Shafting, three-point leveling units, other components reasonably simplified during process. Influence factors such as contact stiffness introduced parameters in model. The optimized parametric obtained demonstrates that linearization represents response characteristics type structure accurately. maximum relative error first four-order natural frequencies between numerical simulation is 4.45% when consistency mode shapes taken into account. research results paper can provide engineering guidance for design frame.