基于输入域分类的实时软件可靠性模型

Reliability Model of Real-time Software Based on Input Domain Classification

航天测控软件是航天测控系统的重要组成部分,作为任务的关键性实时软件,其可靠性直接影响着整个测控系统的可靠性。长期以来,测控系统软件相对缺乏系统的可靠性测试研究。文中针对航天工程地面测控软件的特点及可靠性测试要求,综合考虑缺陷等级、输入域等因素,按照数学算法建立了基于输入域分类的实时软件的可靠性混合模型,并对该模型的实际应用进行了介绍。文中模型和测试算法对航天测控工程领域典型功能软件进行了可靠性测试,实验结果表明了该方法的可行性、有效性和易用性。

Tr＆C software is one of the important composing of the TI＇＆C system. Its reliability makes a direct impact on the reliability of the TT＆C system. For a long time,the measurement and control system software is relative lack of system reliability testing research. In this paper, aiming at the aerospace engineering ground measurement and control software system characteristics and reliability testing re- quirements, considering synthetically some factors such as input dorrmins and defect levels, according to the mathematical algorithm, the reliability mix model of the real time software based on the sort of input domain is established. The applications of the established model are introduced. The typical functional software is tested in reliability with model and test algorithm for aerospace measurement control project areas, the experimental results show that the method is feasible,effective and easy to use.