Publication:
Fuzzy bang-bang relay control of a single-axis active magnetic bearing system

Simple item page
dc.citedby15
dc.contributor.authorNagi F.H.en_US
dc.contributor.authorInayat-Hussain J.I.en_US
dc.contributor.authorAhmed S.K.en_US
dc.contributor.authorid56272534200en_US
dc.contributor.authorid6602271377en_US
dc.contributor.authorid25926812900en_US
dc.date.accessioned2023-12-29T07:53:07Z
dc.date.available2023-12-29T07:53:07Z
dc.date.issued2009
dc.description.abstractActive magnetic bearings (AMB) are presently being utilized in various classes of rotating machinery. Although the rotor-AMB systems are open loop unstable, they are easily stabilized using feedback control schemes of which the PID controller is the most commonly used. The PID controller is however only effective at the vicinity of the rotor's equilibrium position where the dynamics of the rotor-AMB system is linearized. Significant deviation of the rotor's motion from this equilibrium position may occur due to large imbalance forces. In this situation, the nonlinearity in AMBs, which arises from the relationship between the electromagnetic force, coil current and air gap, may render the PID controller ineffective. For the control of nonlinear systems, artificial intelligence techniques such as fuzzy and hybrid techniques are effective. In this paper, a new fuzzy controller is proposed for the control of a single-axis AMB system. This controller is based on the bang-bang scheme, which is an old but effective technique to control nonlinear systems in optimal time. The performance of the proposed integrated fuzzy bang-bang relay controller (FBBRC) was found to be superior to that of the optimized PD controller and the conventional fuzzy logic controller. Comparison of the FBBRC with the fuzzy logic controller cascaded with a hard limiter (FBBC) relay revealed almost equal performance. High frequency chattering was however observed in the steady-state response of the FBBC. Such chattering is known to cause instability and distortion in the amplifiers that are used to supply current to the magnetic bearing actuators. � 2009 Elsevier B.V. All rights reserved.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.simpat.2009.08.006
dc.identifier.epage1747
dc.identifier.issue10
dc.identifier.scopus2-s2.0-70349195817
dc.identifier.spage1734
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-70349195817&doi=10.1016%2fj.simpat.2009.08.006&partnerID=40&md5=cad9816504b1835a3b605453cb8bd46d
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30777
dc.identifier.volume17
dc.pagecount13
dc.sourceScopus
dc.sourcetitleSimulation Modelling Practice and Theory
dc.subjectActive magnetic bearings
dc.subjectBang-bang control
dc.subjectFuzzy logic
dc.subjectNonlinear control
dc.subjectBearings (structural)
dc.subjectControllers
dc.subjectElectric control equipment
dc.subjectFeedback
dc.subjectFuzzy control
dc.subjectFuzzy logic
dc.subjectFuzzy sets
dc.subjectIntelligent control
dc.subjectMachinery
dc.subjectMagnetic amplifiers
dc.subjectMagnetic bearings
dc.subjectMagnetic materials
dc.subjectMagnetism
dc.subjectNonlinear control systems
dc.subjectNonlinear systems
dc.subjectProportional control systems
dc.subjectThree term control systems
dc.subjectTwo term control systems
dc.subjectActive magnetic bearing systems
dc.subjectActive magnetic bearings
dc.subjectAir-gaps
dc.subjectArtificial intelligence techniques
dc.subjectBang-bang
dc.subjectBang-bang control
dc.subjectCoil current
dc.subjectControl of nonlinear system
dc.subjectElectromagnetic forces
dc.subjectEquilibrium positions
dc.subjectFuzzy controllers
dc.subjectFuzzy logic controllers
dc.subjectHard limiter
dc.subjectHigh frequency
dc.subjectHybrid techniques
dc.subjectImbalance force
dc.subjectMagnetic bearing actuators
dc.subjectNon-Linearity
dc.subjectNonlinear control
dc.subjectOpen loops
dc.subjectOptimal time
dc.subjectPD controllers
dc.subjectPID controllers
dc.subjectRelay control
dc.subjectSingle-axis
dc.subjectSteady-state response
dc.subjectSupply currents
dc.subjectBang bang control systems
dc.titleFuzzy bang-bang relay control of a single-axis active magnetic bearing systemen_US
dc.typeArticleen_US
dspace.entity.typePublication
Files
Collections
SCOPUS