An Eigenfunction Approach to Parameter Estimation for 1D Diffusion Problems
An Eigenfunction Approach to Parameter Estimation for 1D Diffusion Problems
复制标题
一维扩散问题参数估计的特征函数方法
DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
R. Rabenstein
中科院分区:
文献类型:
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作者:
Maximilian Schäfer;Alexander Ruderer;R. Rabenstein
The behavior of a distributed parameter system can be represented by an expansion into eigenfunctions. It allows to calculate the output signal in dependence on the parameters of the system. This contribution considers the inverse problem: Estimate the system parameters from noisy measurements of the output. To this end, an eigenfunction expansion serves to establish a state-space description of the distributed parameter system. The corresponding state-space matrices define an extended Kalman filter to perform estimation and tracking of parameter values. This approach is shown here for a diffusion problem in one spatial dimension. The value of the diffusion parameter is estimated from a simulated particle concentration under varying conditions. Problems of this kind arises for example in the emerging field of molecular communications.