{"id":{"repo_id":"ohiolink","oai_identifier":"oai:etd.ohiolink.edu:toledo1352922315"},"canonical_url":"https://search.dev.ndltd.org/etd/ohiolink/oai:etd.ohiolink.edu:toledo1352922315","repository":{"repo_id":"ohiolink","name":"OhioLINK","base_url":"https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai"},"display":{"title":"An Efficient Wide-Speed Direct Torque Control Based on Fuzzy Logic Technique","abstract":"Conventional Direct Torque Control (CDTC) system faces the problems of high flux and torque ripples, and has difficulty in improving the performance of dynamic torque response and control flux locus at very low speed. Under field weakening condition, when the speed is beyond the rated speed, the available power is limited and the speed range cannot be increased any more. A DTC control system based on Fuzzy Logic technology (FL) is proposed. The proposed system aims to make less torque ripples and faster dynamic response than CDTC system by introducing some new fuzzy variables and rescheduling the fuzzy switcher rules. The fuzzy logic control also solved field weakening problem, the speed range can be dramatically increased and the torque ripple when working in field weakening region can be significantly reduced by the proposed technique. We built the system based on matlab, and the simulation results will be analyzed to show the efficiency of the proposed technique.","abstract_html":"Conventional Direct Torque Control (CDTC) system faces the problems of high flux and torque ripples, and has difficulty in improving the performance of dynamic torque response and control flux locus at very low speed. Under field weakening condition, when the speed is beyond the rated speed, the available power is limited and the speed range cannot be increased any more. A DTC control system based on Fuzzy Logic technology (FL) is proposed. The proposed system aims to make less torque ripples and faster dynamic response than CDTC system by introducing some new fuzzy variables and rescheduling the fuzzy switcher rules. The fuzzy logic control also solved field weakening problem, the speed range can be dramatically increased and the torque ripple when working in field weakening region can be significantly reduced by the proposed technique. We built the system based on matlab, and the simulation results will be analyzed to show the efficiency of the proposed technique.","abstract_has_math":false,"creators":["Zhao, Jibo"],"institution":"University of Toledo","degree_name":"Master of Science in Electrical Engineering","degree_level":"masters","degree_discipline":"College of Engineering","degree_department":null,"school":null,"contributors":["Wang, Hong"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012","date_published":"2012","updated_at":"2026-07-24T03:36:23Z","subjects":["Computer Science","Electrical Engineering","Direct torque control","fuzzy logic","fuzzy switcher rules","induction motor","field weakening."],"languages":["English"],"rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://rave.ohiolink.edu/etdc/view?acc_num=toledo1352922315","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Wang, Hong"]},{"key":"dc:creator","label":"Author","values":["Zhao, Jibo"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012"]},{"key":"dc:publisher","label":"Institution","values":["University of Toledo / OhioLINK"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["College of Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Electrical Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Toledo"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Computer Science","Electrical Engineering","Direct torque control","fuzzy logic","fuzzy switcher rules","induction motor","field weakening."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://rave.ohiolink.edu/etdc/view?acc_num=toledo1352922315"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Conventional Direct Torque Control (CDTC) system faces the problems of high flux and torque ripples, and has difficulty in improving the performance of dynamic torque response and control flux locus at very low speed. Under field weakening condition, when the speed is beyond the rated speed, the available power is limited and the speed range cannot be increased any more. A DTC control system based on Fuzzy Logic technology (FL) is proposed. The proposed system aims to make less torque ripples and faster dynamic response than CDTC system by introducing some new fuzzy variables and rescheduling the fuzzy switcher rules. The fuzzy logic control also solved field weakening problem, the speed range can be dramatically increased and the torque ripple when working in field weakening region can be significantly reduced by the proposed technique. We built the system based on matlab, and the simulation results will be analyzed to show the efficiency of the proposed technique."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf","p.64","1.72 MB"]},{"key":"dc:title","label":"Title","values":["An Efficient Wide-Speed Direct Torque Control Based on Fuzzy Logic Technique"]}]}],"canonical_facts":{"dc:contributor":["Wang, Hong"],"dc:creator":["Zhao, Jibo"],"dc:date":["2012"],"dc:description":["Conventional Direct Torque Control (CDTC) system faces the problems of high flux and torque ripples, and has difficulty in improving the performance of dynamic torque response and control flux locus at very low speed. Under field weakening condition, when the speed is beyond the rated speed, the available power is limited and the speed range cannot be increased any more. A DTC control system based on Fuzzy Logic technology (FL) is proposed. The proposed system aims to make less torque ripples and faster dynamic response than CDTC system by introducing some new fuzzy variables and rescheduling the fuzzy switcher rules. The fuzzy logic control also solved field weakening problem, the speed range can be dramatically increased and the torque ripple when working in field weakening region can be significantly reduced by the proposed technique. We built the system based on matlab, and the simulation results will be analyzed to show the efficiency of the proposed technique."],"dc:format":["application/pdf","p.64","1.72 MB"],"dc:identifier":["http://rave.ohiolink.edu/etdc/view?acc_num=toledo1352922315"],"dc:language":["English"],"dc:publisher":["University of Toledo / OhioLINK"],"dc:rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"dc:subject":["Computer Science","Electrical Engineering","Direct torque control","fuzzy logic","fuzzy switcher rules","induction motor","field weakening."],"dc:title":["An Efficient Wide-Speed Direct Torque Control Based on Fuzzy Logic Technique"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["College of Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science in Electrical Engineering"],"thesis:institution_name":["University of Toledo"]},"updated_at":"2026-07-24T03:36:23Z"}