A system and implementation method for determining the overall satellite plan based on multidisciplinary optimization

Abstract

There is provided a system for determining a satellite overall scheme based on multidisciplinary optimization and an implementation method thereof according to the disclosure. The system includes a satellite overall technical index extracting module, a satellite overall technical index allocating module, a satellite subsystem technical index forming module, a satellite system design discipline decomposing module, a design structure matrix generating module, a satellite system discipline analyzing and modeling module, a satellite system optimizing and modeling module, a model simplification module, a two-level collaborative optimizing and modeling module, a collaborative optimizing and solving module, a satellite overall technology index database, a model baseline design database, a design parameter base, and a model library, and a satellite overall scheme parameter outputting module. In the method, the multidisciplinary design optimization of the overall solution of the satellite is achieved by extracting system indexes, decomposing disciplines and design tasks, design discipline analyzing and modeling, structuring a design structure matrix, satellite overall scheme multidisciplinary design optimization representation , model simplification, two-level collaborative optimization modeling and solving.

Description

technical field [0001] The invention relates to a multidisciplinary optimization-based satellite overall scheme determination system and an implementation method, and belongs to the technical field of aircraft overall design optimization. Background technique [0002] The overall design of satellites involves engineering systems such as satellite body, carrier, launch, measurement and control, and application, including traditional subjects such as payload, orbit, control, propulsion, structure, configuration, power supply, thermal control, digital control, measurement and control, as well as performance, manufacturing, Non-traditional disciplines such as cost and reliability are complex engineering systems that include multiple disciplines and are coupled with each other. [0003] At present, on the basis of user task requirements and existing technologies, the tasks are decomposed to carry out the independent design of each subsystem scheme, and the overall design scheme i...

AI Technical Summary

Problems solved by technology

The existing design pattern has the following problems: artificially split the coupling between subsystems, it is difficult to ensure sufficient coordination between subsystems and a reasonable allocation of design margins; it is difficult to coordinate and comprehensively evaluate the design of various subsystems, and different disciplines Collision between designs is prone to occur, resulting in uncontrollable design costs; the serial mode between different subsystems, the work efficiency is relatively low; the design of each subsystem relies too much on the designer's experience; the coupling design information between subsystems With manual interaction, it is difficult to ensure the same source of models and data; the level of model-based design and analysis is low, it is difficult to network or parameterize transmission, there are many repetitive tasks, and the overall design efficiency is low; Effective management, the existing historical data is difficult to be fully utilized

[0004] In addition, complex large-scale communication satellites have many transponders, large-scale antennas, heavy loads, high requirements for load indicators, and mutual penetration of loads and platforms, making the overall scheme design more difficult

Based on manual decomposition and coordination, it is difficult to make the comprehensive performance index of the system reach the overall optimum, and it cannot meet the increasingly complex and large overall design requirements of new spacecraft, and there is an urgent need to upgrade the traditional design mode

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