Quantification of the Influence between Satellite Design Parameters for the Support of System Design Decisions

摘要

Based on the systems engineering idea, this paper presents a parameter influence net as a time effective method for decision making and evaluation which considers the system in its entirety and quantifies the influence between satellite design parameters. It is a combination of widely known analytical system models and a parameter interdependency analysis, set up in a bottom-up approach. Design decisions in terms of parameter value modifications can be evaluated in advance and directed in a way that the intended system behavior is obtained. Consequences of several simultaneous parameter changes can be easily evaluated and highly influential respectively influenced design parameters can be detected. The pictured method gives consideration to the iterative and recursive satellite design process, influenced by the dynamic character of potentially volatile requirements and constraints. Costly design iterations can be avoided and robustness, balance, and performance of the system can be ensured. Exemplarily, the parameter influence net is presented for the power subsystem of a satellite in low Earth orbit and applied on the Hubble Space Telescope.