Application of fractional order PID (FOPID) controller to an automatic voltage regulator (AVR) is presented and studied in this paper. An FOPID is a PID whose derivative and integral orders are fractional numbers rather than integers. Design stage of such a controller consists of determining five parameters. This paper employs particle swarm optimization (PSO) algorithm to carry out the aforeme...

This paper presents a comparison of optimizers for tuning fractional-order proportional-integral-derivative (FOPID) and (PID) controllers, which were applied to DC/DC boost converter. Grey wolf optimizer (GWO) extended grey (EGWO) have been chosen achieve suitable parameters. strategy aims improve optimize proton exchange membrane fuel cell (PEMFC) output power quality through its link with the...

The hypersonic vehicle model is characterized by strong coupling, nonlinearity, and acute changes of aerodynamic parameters, which are challenging for control system design. This study investigates a novel compound scheme that combines the advantages Fractional-Order Proportional-Integral-Derivative (FOPID) controller Linear Active Disturbance Rejection Control (LADRC) reentry flight vehicles w...

In process industries PID controllers are used more. In PID controller we have three parameters for tuning and tuning is done by using Ziegler-Nicholas method. In this paper we used fractional PID controller for coupled tank system and by using a tuning method for getting required response. First used zieglar-nicholas and Astrom-Hagglund method for tuning, then derived two non-linear equations ...

in this paper, boundary value problems of fractional order are converted into an optimal control problems. then an approximate solution is constructed from translations and dilations of a b-spline function such that the exact boundary conditions are satisfied. the fractional differential operators are taken in the riemann-liouville and caputo sense. several example are given and the optimal err...

Abstract In this work, chaos game optimization (CGO), a robust approach, is employed for efficient design of novel cascade controller four test systems with interconnected power (IPSs) to tackle load–frequency control (LFC) difficulties. The CGO method based on theory principles, in which the structure fractals seen via chaotic principle and fractals’ self-similarity characteristics are conside...

In this study, a bald eagle optimizer (BEO) is used to get optimal parameters of the fractional-order proportional–integral–derivative (FOPID) controller for load frequency control (LFC). Since BEO takes only very short time in finding solution, it selected designing FOPID that improves system stability and maintains within satisfactory range at different loads. Simulations demonstrations are c...

This paper proposes a low complexity control scheme for voltage of dynamic restorer (DVR) in three-phase system. The employs the fractional order, proportional-integral-derivative (FOPID) controller to improve on DVR performance order enhance power quality terms response time, steady-state error and total harmonic distortion (THD). result obtained was compared with proportional-integral (FOPI),...

Robust stability is a major concern for real-world control applications. Realization of optimal robust requires stabilization scheme, which ensures that the system stable and presents performance predefined range perturbations. This study presented an approach closed-loop fractional order proportional integral derivative (FOPID) systems with interval parametric uncertainty uncertain time delay....

A pneumatic cylinder system is believed to be extremely nonlinear and sensitive nonlinearities, which makes it challenging establish precise position control of the actuator. The current research aimed at reducing overshoot in response a double-acting actuator, namely, IPA positioning system’s reaction time. was modeled using an autoregressive with exogenous input (ARX) model structure, strateg...