Stored waveform adaptive motor control

dc.contributor.authorBeall, Jeffery C.en
dc.contributor.committeechairLeonard, Robert G.en
dc.contributor.committeememberMyklebust, Arviden
dc.contributor.committeememberRobertshaw, Harry H.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:49:48Zen
dc.date.adate2013-11-15en
dc.date.available2014-03-14T21:49:48Zen
dc.date.issued1986-03-05en
dc.date.rdate2013-11-15en
dc.date.sdate2013-11-15en
dc.description.abstractThis study investigates an adaptive control scheme designed to maintain accurate motor speed control in spite of high-frequency periodic variations in load torque, load inertia, and motor parameters. The controller adapts, stores and replays a schedule of torques to be delivered at discrete points throughout the periodic load cycle. The controller also adapts to non-periodic changes in load conditions which occur over several load cycles and contains inherent integrator control action to drive speed error to zero. Using computer simulations, the control method was successfully applied to a 3Φ synchronous motor and a permanent magnet D.C. motor. The D.C. motor (or A.C. servo-motor) controller has superior characteristics and this system performance was compared to P, PI and PID control for two severe load cases - a periodic step load and a four-bar linkage load. Simulation studies showed the schedule control method to be stable and in comparison to the PID controller to have 1) nearly the same speed of response but without the overshoot found in PID control, 2) nearly the same mean speed error (~ O), 3) 12-50 times better reduction in speed fluctuation, and 4) the schedule controller gains were much easier to find than PID gains for this low-order, highly responsive system.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 140 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11152013-040430en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11152013-040430/en
dc.identifier.urihttp://hdl.handle.net/10919/45746en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1986.B424.pdfen
dc.relation.isformatofOCLC# 13958066en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1986.B424en
dc.subject.lcshAdaptive control systemsen
dc.subject.lcshElectric motorsen
dc.subject.lcshSpeeden
dc.subject.lcshTorqueen
dc.titleStored waveform adaptive motor controlen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
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