Abstract
In this paper an offset-free model predictive control scheme is presented for fractional-order systems using the Grünwald–Letnikov derivative. The infinite-history fractional-order system is approximated by a finite-dimensional state-space system and the modeling error is cast as a bounded disturbance term. Using a state observer, it is shown that the unknown disturbance at steady state can be reconstructed and modeling errors and other persistent disturbances can be attenuated. The effectiveness of the proposed controller–observer ensemble is demonstrated in the optimal administration of an anti-arrhythmic medicine with fractional-order pharmacokinetics.
Original language | English |
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Pages (from-to) | 26-33 |
Number of pages | 8 |
Journal | Control Engineering Practice |
Volume | 71 |
Early online date | 08 Nov 2017 |
DOIs | |
Publication status | Published - Feb 2018 |
Keywords
- Fractional-order systems
- Model predictive control
- Grünwald–Letnikov derivative
- Controlled drug administration
- Fractional pharmacokinetics