Function Modularization Design Method for Civil Aircraft System Based on Design Structure Matrix

As a typical complex system, the design of civil aircraft systems is becoming more and more complex with the continuous refinement of stakeholders’ requirements and design granularity. The complex coupling and correlation relationships between civil aircraft system functions make it difficult to decouple and express civil aircraft system functions directly through design experience. This study proposes a function modularization design method for civil aircraft systems based on design structure matrix and constructs the correlation matrix of civil aircraft system functions. Considering the complex interactions within and outside each function module under complex coupling, a complexity quantification method of civil aircraft function module interactions is proposed. The modular design of system functions is carried out with the optimization objective of minimizing the design complexity of civil aircraft system functions, and the IGTA algorithm is improved to accelerate problem-solving efficiency. The case validation for civil aircraft flight control system shows that the model and algorithm can fully consider the complex interaction information between functions and realize the function modularization design.