نتایج جستجو برای FOPID

تعداد نتایج: 64  

2007
Majid Zamani, Masoud Karimi-Ghartemani, Nasser Sadati, M. Zamani, M. Karimi-Ghartemani, N. Sadati,

This paper proposes a novel method to design an H∞-optimal fractional order PID (FOPID) controller with ability to control the transient, steady-state response and stability margins characteristics. The method uses particle swarm optimization algorithm and operates based on minimizing a general cost function. Minimization of the cost function is carried out subject to the H∞-norm; this norm is ...

2015
Navid Bayati, Akbar Dadkhah, Behrooz Vahidi, Seyed Hossein Hesamedin Sadeghi,

1-Department of Electrical Engineering, Amirkabir University of Technology, Tehran 1591634311, Iran * Corresponding author email: vahidi@aut.ac.ir ABSTRACT: A fractional order PID (FOPID) for a load frequency control (LFC) is presented in a three-area power system. FOPID controllers are designed the same way as PID controllers are, with the difference that FOPID controllers have five parameters...

2011
Ali Akbar Jalali, Shabnam Khosravi,

In this paper, a direct synthesis approach to fractional order controller design Is investigated. The proposed algorithm makes use of Taylor series of both desired closed-loop and actual closed-loop transfer function which is truncated to the first five terms. FOPID Controller parameters are synthesized in order to match the closed-loop response of the plant to the desired closed-loop response....

Journal: :ISA transactions 2011
Saptarshi Das, Suman Saha, Shantanu Das, Amitava Gupta,

In this paper, a comparative study is done on the time and frequency domain tuning strategies for fractional order (FO) PID controllers to handle higher order processes. A new fractional order template for reduced parameter modelling of stable minimum/non-minimum phase higher order processes is introduced and its advantage in frequency domain tuning of FOPID controllers is also presented. The t...

Journal: :ISA transactions 2015
Saptarshi Das, Indranil Pan, Shantanu Das,

An optimal trade-off design for fractional order (FO)-PID controller is proposed with a Linear Quadratic Regulator (LQR) based technique using two conflicting time domain objectives. A class of delayed FO systems with single non-integer order element, exhibiting both sluggish and oscillatory open loop responses, have been controlled here. The FO time delay processes are handled within a multi-o...

2016
H. Shayeghi, A. Molaee A. Ghasemi,

This paper addresses optimal design and performance analysis of the Social Spider Optimization (SSO) algorithm based Fractional Order Proportional Integral Derivative (FOPID) controller for load frequency control (LFC) in an interconnected multi-source power system. Since this controller has more adjusted parameters than classical proportional-integral-derivative (PID) controller, thus it provi...

2017
Gholamreza Farahani,

Nowadays in the complicated systems, design of proper and implementable controller has a most importance. With respect to ability of fractional order systems in complicated systems identification as a first order fractional system with time delay, usage of fractional order PID has a proper result. From one side flexibility of fractional calculus than integer order has been topics of interest to...

2016
Mohamed Mahmoud Ismail, Ahmed Fahmy Bendary,

This paper presents 500 KW three phase standalone photovoltaic systems supplying pumping station consist of four pumps 80 KW rating. The system utilizes a two stage energy conversion power conditioning unit topology composed of a DC-DC boost converter and three level-three phase voltage source inverter (VSI). The Boost converter in this paper is designed to operate in continuous mode and contro...

Journal: :CoRR 2008
Deepyaman Maiti, Ayan Acharya, Mithun Chakraborty, Amit Konar, Ramadoss Janarthanan,

Particle swarm optimization (PSO) is extensively used for real parameter optimization in diverse fields of study. This paper describes an application of PSO to the problem of designing a fractional-order proportional-integral-derivative (PID) controller whose parameters comprise proportionality constant, integral constant, derivative constant, integral order (λ) and derivative order (δ). The pr...

Journal: :Expert Syst. Appl. 2012
Yinggan Tang, Mingyong Cui, Changchun Hua, Lixiang Li, Yixian Yang,

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, ...

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