کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
384370 | 660846 | 2012 | 10 صفحه PDF | دانلود رایگان |

Fractional-order PID (FOPID) controller is a generalization of standard PID controller using fractional calculus. Compared to PID controller, the tuning of FOPID is more complex and remains a challenge problem. This paper focuses on the design of FOPID controller using chaotic ant swarm (CAS) optimization method. The tuning of FOPID controller is formulated as a nonlinear optimization problem, in which the objective function is composed of overshoot, steady-state error, raising time and settling time. CAS algorithm, a newly developed evolutionary algorithm inspired by the chaotic behavior of individual ant and the self-organization of ant swarm, is used as the optimizer to search the best parameters of FOPID controller. The designed CAS-FOPID controller is applied to an automatic regulator voltage (AVR) system. Numerous numerical simulations and comparisons with other FOPID/PID controllers show that the CAS-FOPID controller can not only ensure good control performance with respect to reference input but also improve the system robustness with respect to model uncertainties.
► A novel fractional order PID controller design method is present using chaotic ant swarm.
► Chaotic ant swarm is used to search the optimal parameters of fractional PID controller.
► The designed controller is called CAS-FOPID controller.
► CAS-FOPID controller is applied to an AVR system and good control performance is obtained.
► CAS-FOPID controller possesses good control performance and robustness.
Journal: Expert Systems with Applications - Volume 39, Issue 8, 15 June 2012, Pages 6887–6896