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Soil acidity adaptive control problem
Authors:Victor P Yakushev  Vladimir V Karelin  Vladimir M Bure  Elena M Parilina
Institution:1.Agrophysical Research Institute,Saint Petersburg,Russia;2.Faculty of Applied Mathematics and Control Processes,Saint Petersburg State University,Saint Petersburg,Russia
Abstract:Problem of soil acidity regularization is modeled as stochastic adaptive control problem with a linear difference equation of the dynamics of a field pH level. Stochastic component in the equation represents an individual time variability of soil acidity of an elementary section. We use Bayesian approach to determine a posteriori probability density function of the unknown parameters of the stochastic transition process. The Kullback–Leibler information divergence is used as a measure of difference between true distribution and its estimation. Algorithm for the construction of an adaptive stabilizing control in such a linear control system is proposed in the paper. Numerical realization of the algorithm is represented for a problem of a field soil acidity control.
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