摘要
雷达等复杂电子装备通常采用冗余设计以满足系统的任务可靠性要求。受制于产品部署、功率辐射等风险因素,雷达通常采用定期检修的策略来保证系统的可用性。为比较和确定产品最优的冗余设计方案和维修策略,需要准确预计定期检修时冗余系统的任务可靠性。因此,提出了一种不完美维修下k/n表决定期检修系统可靠性建模与平均严重故障间隔时间(MTBCF)计算方法。该方法考虑了故障检测率、故障隔离率和故障修复率等参数影响,较现有的公式解析法更贴合工程实际。最后,给出了一个工程示例,将该方法与传统的蒙特卡洛仿真结果进行了对比验证,结果表明了该方法的有效性,且其计算效率显著优于蒙特卡洛仿真方法。
Redundancy design is commonly utilized in radar and other complex electronic equipment to meet the reliability requirements of the system,and periodic maintenance of the system is required due to risk factors such as product deployment and power radiation.To compare and determine the optimal redundancy design project and maintenance strategy for the product,it is necessary to accurately predict,upon each periodic maintenance,the mission reliability of the redundant system.Therefore,a reliability calculation method for k-out-of-n systems with periodic maintenance(considering imperfect maintenance)is proposed in this paper.This method takes into consideration the parameters such as fault detection rate,fault isolation rate,and fault repair rate,and is more suitable for engineering practice than the existing formula analytical method.At the end of this paper,a numerical example is given,where the proposed method is compared with the traditional Monte Carlo simulation results.The results show the effectiveness of the proposed method and find its computational efficiency significantly higher than that of Monte Carlo Simulation.
作者
程禹
魏硕辰
Cheng Yu;Wei Shuochen(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)
出处
《质量与可靠性》
2025年第1期24-29,共6页
Quality and Reliability
关键词
定期检修
不完美维修
k/n表决系统
可靠性
periodic maintenance
imperfect maintenance
k-out-of-n systems
reliability
