基于FMI的飞行器分系统多源异构模型一体化仿真

Integrated Simulation of Aircraft Subsystem Multi-source Heterogeneous Models Based on FMI

关键词:  FMI  FMU封装技术  多源异构模型  建模仿真

Key words:  FMI  FMU encapsulation  Multi-source heterogeneous models  Modeling and simulation

摘要:

针对飞行器设计领域各个分系统独立建模设计，产生的多源异构模型难以进行联合数学仿真的问题，提出了采用FMI构建多源异构模型的通用通信接口，从FMU模型封装与联合仿真两方面，给出了一种一体化仿真平台解决方案。以实际项目为背景，验证了平台的兼容性和扩展性。为控制专业的设计工作提供了新的平台，解决了各分系统研发单位之间模型级交流的困难与障碍。同时使控制专业设计人员仅需要了解分系统原理，而无需完全细致了解模型内部结构甚至自行建模，就可以进行设计验证工作，缩短了产品研制周期。

Abstract:

As the modeling and design of each subsystem in the aircraft design field are independent, it is difficult to cross link the multi-source heterogeneous models at the software level or carry on the joint software simulation. On the basis of the analysis of the existing methods, the FMI Standard is adopted to build a general exchange interface for various specialties and heterogeneous modes. From the two aspects of FMU model encapsulation and co-simulation, an integrated simulation platform solution is given. The compatibility and extensibility of the platform are verified based on the actual project. A new platform is provided for the design of the control specialty, which solves the difficulties and obstacles of the model level communication among the research and development units of each sub-system, and greatly improves the efficiency of communication. Instead of getting a thorough understanding of the internal structure of the model or even modeling themselves, professional designers of control only need to understand the principle of the sub-systems and link the models inputs and outputs when they design and verify the control laws, which shortens the cycle of product development.