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A Method of Complementary Bi-system Co-evolutionary Design and Its Application

Author: ChenYu
Tutor: ZuoHongFei
School: Dalian University of Technology
Course: Mechanical Design and Theory
Keywords: Coevolution Complementary dual system Intelligent Computing Layout Satellite Module
CLC: V423.4
Type: Master's thesis
Year: 2006
Downloads: 122
Quote: 1
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Abstract


An important method of solving complex engineering system design (such as satellite systems design) is a multidisciplinary design optimization method based on decomposition - Collaborative Thought and coevolution are two active research topic. Layout optimization of satellite module is designed to apply a background for complementary and synergistic with multiple performance constraints, large-scale, high-dimensional, nonlinear weakly coupled complex engineering systems optimization problems, drawing on the idea of ??co-evolution, a dual system evolution design methods to better solve complex engineering system optimization design problem. This paper first gives a description of a complex engineering system design problems; then review the advantages and disadvantages of multidisciplinary design optimization and coevolution Research discuss several typical methods. On this basis, this paper proposes a dual system complementary co-evolution method. This paper has nothing new or special is as follows: (1) gives the dual system complementary coevolution method, the methodological points: with A, B two populations (system) evolution of complex engineering systems P A system design variables varying size strategies and the fitness function of the original problem; B system to maintain the design variables of the original problem, the use of a simple fitness function. B system draws cooperative synergy evolutionary thought (CCEA), the original problem P is decomposed into a number with fewer design variables, independent of each other subsystems parallel evolution. A, B two systems parallel evolution synergies between migration through populations of individuals, jointly solving the original problem. A, B two systems constitute the framework of the co-design of a system with double the amount of design variables and fitness function of complexity complementary relationship. (2) preparation of the method of software and design examples given satellite module layout optimization design problem. Simulation results show that the dual system is complementary and synergistic evolutionary approach to solving complex engineering system of weakly coupled performance is superior to the traditional genetic algorithm and cooperative co-evolutionary method. It should be noted that the dual system complementary coevolution method of simulation is limited pending further validate the generality of the proposed algorithm. Finally, pointed out the problems of this method and the direction of future research. Expectations of the working of this paper can help co-evolutionary design methods, theoretical discussion, contribute to the design of complex engineering systems in a class of weakly coupled application research progress.

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Rocket, the spacecraft structure (overall ) > Spacecraft design and construction of > Satellite
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