考虑环境因子时指数型串联系统可靠性评定的信息论方法

Information Theory Method of Reliability Assessment for Exponential Series System Using the Environmental Factor

在考虑环境因子的情形下,研究了指数型串联系统可靠性评定的信息论方法。基于串联系统环境因子的估计,并根据单元试验信息提供的信息量与系统折合试验应提供的信息量相等的原理,导出了考虑环境因子时,单元试验信息等效折合和系统可靠性近似限的计算公式,例子说明考虑环境因子的可靠性评估结果优于未考虑环境因子的评估结果。

Using the environmental factor, an information theory method of reliability assessment for exponential series system is presented. Based on the estimate of environmental factor for the exponent series system, the information conversion between the units and system in different environment is studed. The unit information equivalent conversion and approximate confidence limit of the system reliability are given according to the principle of equalinformation. An illustrative example is examined numerically and shown that the assessment results obtained by using the environmental factor are satisfactory.