Modeling of interval thermal processes in electronic systems at the interval uncertainty of the determinative parameters

摘要

As the practice shows, the parameters of electronic systems that determine the thermal processes are not unambiguously known and identified, but they are indeterminate and interval stochastic, which, in its turn, causes the intevally stochastic character of the thermal processes. This article develops a method that allows modeling unsteady interval stochastic thermal processes in an electronic system at the interval indeterminacy of the determinative parameters. The method is based on obtaining and further solving equations for the unsteady statistical measures (mathematical expectations, variances and covariances) of the temperature distribution in an electronic system at given change intervals and the statistical measures of the determinative parameters. Application of the elaborated method to modeling interval stochastic temperature fields by giving the example of a particular electronic system is considered.