Satellite overall plan confirmation system based on multidisciplinary optimization and realization method

Abstract

The invention discloses a satellite overall plan confirmation system based on a multidisciplinary optimization and a realization method. The satellite overall plan confirmation system comprises a satellite total technical index extraction module, a satellite total technical index distribution module, each subsystem technical requirement formation module of a satellite, a satellite system design subject decomposition module, a design structure matrix generation module, a satellite system design subject analysis modeling module, a satellite system optimal modeling module, a model simplification module, a two-stage collaborative optimization modeling module, a collaborative optimization solving module, a satellite total technical index database, a model number base line design database, a design parameter library, a model library and a satellite overall plan parameter output module. The multidisciplinary design optimization of the satellite overall plan is realized by system index extraction, design task subject decomposition, design subject analysis modeling, design structure matrix construction, satellite overall plan multidisciplinary design optimization description, model simplification and two-stage 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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