Modeling the Reliability Growth of Hardware/Software
硬/软件可靠性增长模型

Very few studies have addressed the problem of modeling and evaluating the reliability growth of combined HW/SW system, A new, modeling method is presented in this paper to treat those problems, which is based on two main assump - tions: 1 ) The failure rates are constant during periods between failures, while changes on hardware (software) failure rates only occur in each hardware (software) failure recovered points. 2) More than 1 failures occur at one time is impossible. Analytic expressions of system availability indexes are also presented, as well as computing complexity. An approximate method is given via field data example to reduce the complexity.