故障诊断和检测策略的综合研究

研究系统的故障诊断和检测策略问题．假定系统有两种工作状态(正常状态及异常状态)和一种故障状态，为判断系统是正常还是异常，每隔一段随机时间对系统检测一次．利用概率分析、补充变量和最优化方法，导出了系统一些新的运行指标、诊断参数的最优临界值和最优检测周期．

Compositive research on the trouble diagnosis and inspection policy

The trouble diagnosis and inspection policies were discussed for a system having two working modes (normal mode and abnormal mode) and a failure mode. While the system is working, it is inspected once every random time period to make sure it is in normal mode or abnormal mode. Each inspection consisted in measuring the value of a diagnostic parameter. And the duration of inspection is a general continuous random variable. The new operation indices, the optimal diagnostic critical value and the optimal inspection cycle are derived by using probability analysis, the supplementary variable technique and optimization method.