Application of meta heuristics Optimization techniques in designing Fractional order PID controller

Abstract

Recently, various techniques are implemented in the field of control engineering to control newlinethe plants or system as per the user requirement. Day by day, new methods are evolving to newlineget better quality of controller for different process or plants in terms of high quality of newlineproducts and performance. Despite advances in control methods, still the Proportional- newlineIntegrator-Derivative (PID) controller is frequently used in the process control area because newlineof its proven advantages such as simple structure and easy to implement. Further, frequent newlineusage of conventional PID controller has motivated many researchers to achieve better newlinedesign methods or advances in PID control structure. Now days, researchers give more newlinefocus on fractional order PID (FOPID) controller because of better closed loop newlineperformance and robustness features due to iso-damping property as compared to newlineconventional PID controllers. The design of FOPID required two more extra parameters newlinethan the conventional PID i.e. and#1050595; and and#1050596;, where and#1050595; is the fractional order of integral term and newlineand#1050596; is the fractional order of derivative term of FOPID. Basically, FOPID controller newlinerepresents the generalized version of conventional PID controller. The most challenging newlinetask in the design of FOPID controller is to get proper controller parameters by using newlinesuitable tuning methods. In literature, there are various design methods for FOPID newlinecontroller by using both conventional as well as meta-heuristic techniques. Currently, the newlineresearchers focus drive into the application of meta-heuristic methods in the design of newlineFOPID controller.In this thesis, the optimal designs of FOPID controller using meta-heuristic algorithms for newlinedifferent applications are studied using simulation. In this regard, the performance of the newlinemodern meta-heuristic techniques are evaluated by considering different applications such newlineas Automatic Voltage Regulator system (AVR), 1st order delay system like heat flow newlinesystem (HFS), Nonlinear cruise control system etc. The PID and FOPID controller based newlineon the Ant