基于Windows/RTX的实时仿测软件设计

Design of Real-time Simulation&Test Software Based on Windows/RTX

针对传统测试软件实时性有限、传统仿真接口软件通用性程度低的问题,为满足半实物仿真软件需兼顾单元测试和控制系统仿真验证的需求,设计了基于Windows/RTX的实时仿测软件。仿测软件采用模块化的设计原则,开发了GUI层人机交互界面和RTX层实时运行程序。为保证实时性,采用无锁循环缓冲区+双线程技术,解决了RTX环境下仿真步长为1 ms时串口数据收发的超时问题;提出一种超时检测算法监测仿真节点的实时状态。借助cJSON优化了测试用例配置文件,用户可以更灵活地编辑测试用例,利用RTW自动代码生成将弹体模型编译集成到RTX仿测软件工程。实验结果表明:该仿测软件有效兼顾了单测与仿真,提高了仿测软件的通用性和二次开发效率,降低了开发难度。

Aiming at the limited real-time performance of traditional test software and the low generality of traditional simulation interface software,a real-time simulation software based on Windows/RTX is designed to meet the requirements of unit testing and control system simulation verification of semiphysical simulation software.Through modular design,GUI layer human-computer interface and RTX layer real-time operation program are developed.To ensure the real-time,the lock-free cyclic buffer plus dual-threading technology is used to solve the timeout problem of serial data transmission and reception when the simulation step size is 1 ms under RTX environment.A timeout detection algorithm is proposed to monitor the real-time status of simulation nodes.With cJSON,the test case configuration files are optimized and the users can edit the test cases more flexibly.RTW automatic code generation is used to integrate the projectile model compilation into RTX copycat software engineering.Test results show that the imitation software effectively considers the single test and the simulation,improves the versatility and secondary development efficiency,and reduces the development difficulty.