一、前言 参数估计提供了有效地利用数据去估计数学模型中的参数的方法。可如图1所示。 通常的热物性测试原理都是基于导热微分方程的一个反问题,即由一定单值性条件下的解来确定方程中的某些系数,即热物性。本文以激光脉冲法为例,说明参数估计在测量热物性中的应用具有良好的前景。 I. INTRODUCTION Parameter estimation provides a way to effectively use the data to estimate the parameters in a mathematical model. Can be shown in Figure 1. The usual thermophysical testing principle is based on the inverse problem of the differential thermal conductivity equation. That is, some of the coefficients in the equation are determined by the solution under some unambiguous conditions, that is, the thermophysical properties. In this paper, the laser pulse method is taken as an example to show that the application of parameter estimation in the measurement of thermal properties has a good prospect.