基于FMI的分布式联合仿真技术研究

摘要

适应新一代航空飞行器机电和能量综合化方向发展,研究多学科的耦合系统联合仿真问题,针对多学科异构仿真模型的接口统一,联合仿真数据的交换和同步调度控制问题,采用功能模型接口(FMI)标准,对基于FMI的分布式联合仿真关键技术展开研究.首先,采用数值积分方法建立了联合仿真的数学模型并进行详细的分析.其次,提出了基于FMI的分布式联合仿真方法,采用分布式和客户端/服务器的架构,构建了符合FMI标准的分布式联合仿真框架,制定了联合仿真通信点时刻数据交换规则和仿真过程同步调度方法,详细描述了联合仿真客户端执行流程和对应FMI接口的实现,提出了联合仿真的主控制算法.最后,通过原型系统的实现和实例结果验证了上述方法的有效性.%In order to meet requirements of the new generation of aviation aircraft with electromechanical and energy integration,co-simulation of multi-disciplinary coupled system is studied.For unified interfaces of heterogeneous simulation models,simulation data exchange and synchronization scheduling control,key technologies of distributed co-simulation based on Functional Mock-up Interface (FMI) are studied.Firstly,mathematical philosophy of co-simulation is established by numerical integration method and analyzed in detail.Secondly,distributed co -simulation architecture based on FMI is built by using distributed and client/server structure.The master algorithm of co-simulation is proposed by integrating processes including the rule of data exchange at communication point and the method of synchronization scheduling control during co-simulation.The flow of co-simulation client and the implementation of the corresponding FMI interfaces are described.Finally,the example from prototype system is given to demonstrate the effectiveness of the master algorithm of distributed co-simulation based on FMI.