Research On Key Technology Of Multi-Domain Simulation Of Complex System Equipment Based On FMI

The design process of complex system equipment such as missiles,tanks,and multiple rockets The design process of complex system equipment such as missiles,tanks,multiple rockets and other complex systems involves multiple domain modeling and joint simulation of structure,multi-body,fluid and control,etc.Traditional professional software can only perform domain-specific modeling and simulation,while joint simulation of multiple domains has always been a challenge.In order to realize the multi-domain joint simulation and optimization of complex system equipment and verify whether the design of complex system equipment meets the design index requirements,this thesis proposes a two-way drive interface of domain-specific simulation model based on parameterization and a joint simulation method of multi-domain simulation model based on FMI standard,and designs and develops a set of multi-domain joint simulation platform based on FMI,which can realize the multi-domain joint simulation of complex system equipment.It can realize the rapid joint simulation of complex systems and equipment,and provide a digital platform for the design and optimization of complex systems and equipment.In this thesis,we firstly study the dynamics of rigid-flexible coupled multi-body system to lay the foundation for the design of rigid-flexible coupled complex system equipment,and then study the Modelica multi-domain simulation language and the multi-domain joint simulation standard based on FMI(Functional Mock-up Interface)standard.On this basis,we have studied the models of commercial software and the parametric interfaces of simulation,built a single domain model and its interface based on parameter drive,and provided models,data,interfaces and technical support for the realization of multi-domain joint simulation;opened up the two-way parameter-driven interfaces of models including geometric models(UG,Creo),multi-body systems(ADAMS),finite elements(ASNSYS),control(Simulink,Modelica),etc.The two-way parameter-driven interface between the geometry model and the multi-body system(ADAMS),finite element(ASNSYS),control(Simulink,Modelica)models,etc.,and the integration of FMI as a joint multi-domain simulation standard in the MWorks platform,realizes the two-way parameterized transfer from the structural model of complex systems and equipment to the multi-body dynamics model and the rigid-flexible dynamics model to the control model,opens the key parameter transfer path between the domain-specific simulation and multi-domain simulation,and realizes the domain-specific simulation based on FMI standard in the Modelica unified simulation environment.The joint simulation of domain-specific simulation models based on the FMI standard is realized under the Modelica unified simulation environment;the design and simulation models,design and simulation parameters,and simulation results are managed by using Web model data management,parameterization drive,and virtual prototype,etc.A multi-domain joint simulation and management platform is designed and developed to drive each simulation model in real time for the joint simulation of multiple domains.The paper finally verifies the feasibility and practicality of this platform based on the design and simulation of the rigid-flexible coupled missile launch test verification system.Through the two-way drive interface of domain-specific simulation models based on parameterization,the joint simulation method of multi-domain simulation models based on FMI standard and the constructed multi-domain joint simulation platform proposed in this paper provide a new method and idea for the rapid design and simulation of complex systems and equipment in the future,which can significantly shorten the design cycle of complex systems and equipment,improve the design efficiency and reduce the R&D cost.