Technology of assembly sequence planning for reflector

To improve the surface accuracy and assembly efficiency of the large reflector antenna, a assembly optimization method for antenna panels was studied. By considering the assembly process, the mathematical model for Assembly Sequence Planning (ASP) of reflector was constructed based on traditional Genetic Algorithm (GA), whose fitness function consisted of evaluation of assembly deformation, assembly cycle and assembly labor cost. Considering the assembly accuracy and consumption in the assembly process, the multi-objective optimization function was obtained through weighting the corresponding items.The finite element simulation model was given to simulate the dynamic assembly process of reflector according to the algorithm result of ASP based on GA, and the simulation results was used to evaluate ASP algorithm result timely and accurately. Taking the example of 9 m reflector antenna, the algorithm results and simulation results of different objective functions were discussed. The assembly sequence with the highest precision, with the best economic efficiency, and the assembly sequence considering both the improvement of assembly precision and economical efficiency were all calculated. The above results demonstrated the proposed ASP method based on GAand its mathematical model were accuracy and efficiency. © 2020, Editorial Department of CIMS. All right reserved.