【作者】 陈洋； 邱长泉； 秦红磊；

【Author】 Chen Yang Qiu Changquan Qin Honglei (Beijing University of Aeronautics & Astronautics Beijing 100191 China)

【机构】 北京航空航天大学电子信息工程学院；

【摘要】 多总线混合测试系统的各类总线仪器之间高精度时钟同步及触发问题是在构建系统时需要考虑的重要问题。飞行数据仿真管理系统是由多种总线组合构建的仿真测试系统,在飞参系统基础上发展而来,涉及到的信号种类多、数量大、精度高,在时间上具有一定的相关性,需要多种不同总线的硬件系统平台同时工作。本文综合考虑各类总线的同步触发机制,设计并实现了符合该系统需求的同步触发方案,为系统在实际仿真测试中获取有效的仿真测量数据以及良好的测量精度提供了重要保障。更多还原

【Abstract】 High precision for clock synchronization and triggering among various bus instruments of integrative test system with multi-bus is significant to consider when the system is established for practical application.Flight Data Simulation and Management System,deriving from the flight parameter system,is a simulation and test system which consists of various buses.It has to deal with a mass of signals which demand high precision and correlate with each other on the aspect of time.The whole system operates simultaneously on several hardware platforms containing diverse buses.This paper takes into account synthetically different bus mechanisms,designs the scheme for clock synchronization and triggering,and then realizes the scheme which achieves the requirements of the system to a high degree.With the implementation of precise clock synchronization and triggering, it is feasible for Flight Data Simulation and Management System to obtain impactful data and excellent precision in practical simulation and testing.更多还原