Satellite Payloads Configuration And Layout Design Method

Configuration and layout collaborative design of satellite payloads is an important part of satellite overall design based on common satellite platform. Configuration design of satellite payloads refers to the selection of the alternative payloads to meet customer requirements and constraints while optimize the specification performance defined by users. Layout design of satellite payloads involves with placing the selected payloads into the satellite module to optimize some design objectives while meeting a variety of engineering and technical constraints. Integrated design of configuration and layout of satellite payloads is a key on designing serial new satellite based on common platform, which affects heavily on the reduction of the design cycle and cost, and the improvement of satellite performance. Configuration and layout design is known as a combinatorial optimization and NP-hard problem in mathematics, and a scheme design and complex system problem in engineering. Considerable challenges and difficulties suffer from both the combinatorial explosion in mathematics and the complexity in engineering system, especially when to achieve practical engineering.The research background of this dissertation includes two aspects. The engineering application is against the background of the relative satellite design project and the "863" project in the field of aerospace. The theorical reseach is against the background of two NSFC projects. This dissertation studies the solution methods on configuration and layout design of satellite payloads, as well as their integraed design. The purpose of this study is to explore some effective strategies or approaches for dealing with engineering combinatorial optimization problems, to add an integrated design function of configuration and layout into the Software Platform for Satellite Payload Design & Simulation based on common platform, and to provide some theorical and technical support for emergency design for unexpected changes. This dissertation focuses on how to implement integrated design of satellite payload configuration and layout, including the following contributions:(1) According to the design process and principle of spacecraft payloads, a configuration module-based configuration model of satellite payloads configuration design is built to form an architecture tree of product structure. Product components are selected through instantiation of configuration modules. Configuration constraints are classified into two types (layout and interface constraint). Multi-agent system-based approach is proposed to solve configuration problem. Constraint satisfaction problem is tackled through interaction of configuration Agents, while the configuration scheme is optimized by multiple agents system based on pheromone update mechanism. The design result of SEVIRI in MSG-1 satellite illsutrate the feasibility of the proposed approach for satellite payloads configuration. (2) The mathematical characteristics and solution strategy of satellite payloads layout design are analysized. Cooperative revolutionary scatter search (CCSS) combining scatter search (SS) with a cooperative coevolutionary architecture is proposed. As a new emerging evolutionary algorithm, SS is a flexible meta-heuristic method that can effectively solve the combinatorial optimization problems. This study improves some elements of SS. The diversification method is built on coordinate transformation and controlled randomness. The reference set is updated by the static method based on two dissimilarities. The experiments on circles packing have shown that the improved SS has better local and global search capability. Aiming at the computational complexity of satellite payloads layout, this study decompose layout problems into several layout sub-problems using divide-conquer strategy. Then CCSS is applied to cooperatively solve these sub-problems. The experimental results illustrate the capability of the proposed approach in tackling the complex problem with less computational effort.(3) Human-computer cooperative revolutionary design based on knowledge fusion (HCCKF) is proposed to tackle complex engineering design problem. The proposed approach decomposes a complex problem into several subproblems solved cooperatively. The generalized knowledge model of problem description is built to describle online human knowledge, prior knowledge and computational knowledge. The generalized evolutionary model is presented not only to aim at the generalized knowledge model, but also to be viewed as a knowledge fusion model. The expanded scatter search is given to fully fuse three types of design knowledge. The numerical experiments demonstrate the feasibility of the proposed approach that also can be applied into integrated design of satellite payloads configuration and layout.(4) Integrated design of configuration and layout of satellite payloads is proposed on basis of above research and the previously developed aircraft design & simulation platform. Coevolution-based design model, design process, and system architecture are addressed to realize integrated design. The program module of integrated design is added into Spacecraft Optimization & Simulation Platform developed in Pro/E environment by our team. At last, an example of payloads configuration and layout in MSG-1 is constructed to illustrate the design process of the proposed integrated design approach for satellite payloads configuration and layout.In this dissertation, the proposed solution approaches not only benefit the development of science and technology in related fields theoretically, but also have applicable value. Furthermore, this work would be extended to apply in the configuration and layout design of other spacecraft, engineering machinery, tunnel boring machine(TBM), shipping, bullet train, etc..