VMIC和xPC下的分布式实时仿真与测试系统设计

Design of Distributed Real-Time Simulation and Test System in VMIC Network and xPC

提出了一种基于反射内存网和xPC的分布式半物理实时仿真与测试系统;采用xPC建立实时环境,通过反射内存卡组成实时网络,由AD、DA、DI/O、RS422等板卡组成信号采集与处理系统,来实现控制系统的快速原型化和硬件在回路仿真与测试;详细介绍了系统的功能及分布式布局设计,测试系统设计,xPC环境下S-Function的编写、PCI总线的基本概念以及xPC环境下编写驱动的关键问题,在此基础上实现了测试系统板卡在xPC环境下的驱动开发;最终实现了半物理仿真与测试系统的集成;仿真结果表明,板卡都能稳定工作,系统通讯稳定,数据误差小,具有较强的开放性和参考性。

A distributed real--time simulation and test system based on VMIC network and xPC is developed, xPC and VMIC are used to build a real--time environment and network, signal acquisition and processing system is composed of the AD, DA, DI / O, RS422 and other cards, for rapid prototyping of a control system and hardware simulation and testing in the circuit. Recounting the function of the sys tern and the distributed layout, the design of test system, preparation of S--Function, the basic concepts of PCI bus, and the key issues of writing driven in xPC environment, according to these theory, achived the driver design for the boards of the test system in the xPC environment. Ultimately a semi--physical simulation and test system is integrated. The results show that, the boards can perform stability, stable communications, data error is small, the method has strong portability, the high expansibility, openness and reference.