Polynomial approach to control system design for a magnetic levitation system

2007 ◽  
Author(s):  
Frantisek Gazdos ◽  
Petr Dostal ◽  
Radek Pelikan ◽  
Vladimir Bobal
Keyword(s):  
Control System ◽  
System Design ◽  
Magnetic Levitation ◽  
Control System Design ◽  
Levitation System ◽  
Magnetic Levitation System

scholarly journals Robust Fuzzy Logic Stabilization with Disturbance Elimination

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Kumeresan A. Danapalasingam
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Fuzzy Logic Controller ◽  
Magnetic Levitation ◽  
Control Law ◽  
Dynamic Feedback ◽  
Model Uncertainties ◽  
Levitation System ◽  
Magnetic Levitation System ◽  
Mathematical Derivation

A robust fuzzy logic controller is proposed for stabilization and disturbance rejection in nonlinear control systems of a particular type. The dynamic feedback controller is designed as a combination of a control law that compensates for nonlinear terms in a control system and a dynamic fuzzy logic controller that addresses unknown model uncertainties and an unmeasured disturbance. Since it is challenging to derive a highly accurate mathematical model, the proposed controller requires only nominal functions of a control system. In this paper, a mathematical derivation is carried out to prove that the controller is able to achieve asymptotic stability by processing state measurements. Robustness here refers to the ability of the controller to asymptotically steer the state vector towards the origin in the presence of model uncertainties and a disturbance input. Simulation results of the robust fuzzy logic controller application in a magnetic levitation system demonstrate the feasibility of the control design.

scholarly journals A Novel Control-rod Drive Mechanism via Electromagnetic Levitation in MNSR

Nukleonika ◽  
2014 ◽  
Vol 59 (2) ◽  
pp. 73-79
Author(s):  
Mohammad Divandari ◽  
Mehdi Hashemi-Tilehnoee ◽  
Masoud Khaleghi ◽  
Mohammadreza Hosseinkhah
Keyword(s):  
Control System ◽  
State Feedback ◽  
Closed Loop ◽  
Research Reactor ◽  
Magnetic Levitation ◽  
Electromagnetic Levitation ◽  
Open Loop ◽  
Control Rod ◽  
Levitation System ◽  
Magnetic Levitation System

Abstract In this paper, an electromagnetic levitation system was used with a synchronous motor to navigate the control rod of a small-type research reactor. The result from this prototype magnetic levitation system was in agreement with simulation results. The control system was programmed in MATLAB through open-loop system, closed-loop with state feedback and closed-loop with state feedback integral tracking. The final control system showed the highest performance with a low positioning error. Our results showed that the developed control system has the potential to be used as a reliable actuator in nuclear reactors to satisfy higher performance and safety.

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