Application of Different Methods to Quantify Uncertainty in Specific Absorption Rate Calculation Using a CAD-Based Mobile Phone Model
Application of Different Methods to Quantify Uncertainty in Specific Absorption Rate Calculation Using a CAD-Based Mobile Phone Model
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DOI：
10.1109/temc.2016.2605127
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发表时间：
2017-02
影响因子：
2.1
通讯作者：
Xi Cheng;V. Monebhurrun
中科院分区：
文献类型：
--
作者：
Xi Cheng;V. Monebhurrun
本文重点研究了计算机辅助设计移动的手机模型在比吸收率（SAR）计算中的参数不确定性量化（UQ）。SAR计算中的不确定性量化的三个非侵入UQ方法：无迹变换，随机配置，和非侵入多项式混沌。分析了它们在单随机变量和双随机变量情形下的性能。为了简化多个不确定输入情况下的UQ过程，证明了可以将不确定性组合起来评估输出的参数不确定性。为了量化每个不确定输入参数相对于输出不确定性的相对重要性，将基于多项式混沌的Sobol指数方法用于SAR计算中进行灵敏度分析。的调查结果进行了介绍和讨论。
This paper focuses on parameter uncertainty quantification (UQ) in specific absorption rate (SAR) calculation using a computer-aided design mobile phone model. The uncertainty in SAR calculation is quantified by three nonintrusive UQ methods: unscented transformation, stochastic collocation, and nonintrusive polynomial chaos. Their performances for the cases of one and two random variables are analyzed. To simplify the UQ procedure for the case of multiple uncertain inputs, it is demonstrated that uncertainties can be combined to evaluate the parameter uncertainty of the output. To quantify the relative importance of each uncertain input parameter with respect to the uncertainty of the output, the polynomial chaos based Sobol' indices method is used in SAR calculation for sensitivity analysis. The results of the investigations are presented and discussed.