Browsing Research Articles (University of Pretoria) by Subject "Fractional order"

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Fractional order and BICO disturbance observers for a run-of-mine ore milling circuit

Olivier, Laurentz Eugene; Craig, Ian Keith; Chen, Y.Q. (Elsevier, 2012)

Grinding mill circuits are hard to control due to poor plant models, large external disturbances, uncertainties from internal couplings, and process variables that are difficult to measure. This paper proposes a novel ...
A fractional order model for the transmission dynamics of hepatitis B virus with two-age structure in the presence of vaccination

Tilahun, Getachew Teshome; Woldegerima, Woldegebriel Assefa; Mohammed, Nesredin (Taylor and Francis Open, 2021)

In this study, we proposed a fractional order model of hepatitis B virus transmission dynamics with two-age structure under vaccination. A qualitative analysis of the model is performed. Basic reproduction number of the ...

Now showing items 1-2 of 2

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