Study And Application Of Mdo Method In The System Design Of Satellite

System design of satellite is studied with the purpose of exploring and practicing multidisciplinary design optimization method in engineering application. Application of multidisciplinary modeling, analysis, optimization, system integration and related techniques is also studied, and a prototype system of multidisciplinary synthetic design for system design of satellite is formed in the end.Based on the thought of variable-complexity modeling in multidisciplinary design optimization, a two level variable-complexity model is established with the background of moon exploring satellite. The cost of computing is greatly cut down by using this model with the precondition that optimization accuracy of the whole system is guaranteed.Satellite configuration design theory is studied, and a plug-in module for satellite configuration design is developed based on the platform of SolidworksTM. Parameter design and analysis for satellite configuration can be implemented with this module, and its result can be referenced by other subject design.Based on response surface method, subspace current optimization is studied, and a set of coupling mathematical state equations is programmed with a comparative perfect result.Based on the theoretic research above, a prototype system of multidisciplinary synthetic design for system design of satellite is developed. Practice indicates that the synthetic integration of mission analysis stage, system design argumentation stage and system design stage in the whole course of system design of satellite is basically implemented with this system, which offers an assistant tool of design and decision-making for the design staff.Finally the limitation of this prototype system is analyzed. Multidisciplinary- design-oriented master model technique and system integration technique are studied so as to improve the prototype system, and a scheme of using commercial software Model CenterTM for system integration is conceived.From the theoretic research and application result, this paper explores and improves the application of multidisciplinary design optimization in system design of satellite.