In this paper, optimal control of coupled tank systems has been proposed using H∞fractional-order controllers. Controller tuning has been posed as multi-objective mixed sensitivity minimization problem for tuning the fractional-order PID (FOPID) controllers and multi-objective variants of bat algorithm (MOBA) and differential evolution (MODE) has been used for optimization. Use of fractional-order controllers provides better characterization of dynamics of the process and their tuning using multi-objective optimization helps in attaining the robust trade-offs between sensitivity and complementary sensitivity. Both the FOPID controllers tuned with MOBA and MODE present robust behavior to external disturbance and the compared results show that MOBA-tuned controller presents efficient tracking of the reference.
CITATION STYLE
Katal, N., & Narayan, S. (2016). Multi-objective optimization-based design of robust fractional-order PIλDμcontroller for coupled tank systems. In Advances in Intelligent Systems and Computing (Vol. 437, pp. 27–38). Springer Verlag. https://doi.org/10.1007/978-981-10-0451-3_4
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