MARC details
| 000 -LEADER |
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| fixed length control field |
04432ntm a2200373 i 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000105283 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251117113408.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
180924t20182018my a f a m 001 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0005204(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905141451 |
| Level of effort used to assign nonsubject heading access points |
hanafiah |
| -- |
201809241506 |
| -- |
fateeha |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMP |
| Language of cataloging |
eng |
| Transcribing agency |
UMP |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FKEE .S28 2018 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Satishrao Pothorajoo, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Modified fuzzy gain scheduling speed controller for BLDC with seamless speed reversal using direct commutation switching scheme / |
| Statement of responsibility, etc. |
Satishrao Pothorajoo |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMP, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2018 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2018 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xii, 76 pages : |
| Other physical details |
illustrations (some color) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
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| Content type term |
text |
| Source |
rdacontent |
| 336 ## - CONTENT TYPE |
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| Content type term |
text |
| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Media type term |
unmediated |
| Source |
rdamedia |
| 337 ## - MEDIA TYPE |
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| Media type term |
computer |
| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Carrier type term |
volume |
| Source |
rdacarrier |
| 338 ## - CARRIER TYPE |
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| Carrier type term |
computer disc |
| Source |
rdacarrier |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| File type |
text file |
| Encoding format |
PDF |
| Source |
rda |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Electrical and Electronics Engineering |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Science) -- Universiti Malaysia Pahang – 2018 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Over the past decade the Brushless Direct Current (BLDC) motors have gained popularity in multiple sectors such as transportation, robotics, and automation. This is due to its high efficiency, low maintenance and high-power density. BLDC motor applications in automation, aerospace and industrial automation requires the motor to be operated bidirectionally. Although many BLDC drive controllers have been developed, most solutions are focusing only on forward motoring instead of bidirectional. A 4-quadrant BLDC controller was developed by S.Joice was the first to address this issue, although it is unclear whether the controller able to achieve bidirectional operations due to lack of evidence in the literature. To assess this bidirectional capability of S.Joice controller, a test platform was developed in MATLAB Simulink simulation. It is found that the controller is incapable of achieving reference speed in third quadrant and has 67.5 % of speed error during quadrant transient operations. To overcome this limitation, this study proposes a new BLDC commutation scheme, called direct commutation switching (DCS) scheme. A PID speed controller coupled with DCS scheme is tested for two test cases. From the test cases, it can be concluded that DCS scheme is able to drive the BLDC motor bidirectionally. Further analysis points out that the PID exhibits the typical unsatisfying performance under nonlinear load conditions. This is a classic problem that have lead many different types techniques to be developed, including Fuzzy Logic and Artificial Neural Network (ANN). Among others, fuzzy logic optimization technique is preferable due to simplicity compared other intelligent speed controller. This study attempts to develop a new BLDC controller by modifying fuzzy gain, hence proposes M.F.G.S speed controller. This proposed controller’s step responses are compared to PID and S.T.Fuzzy speed controllers under six test cases. The proposed controller has the shortest recovery time during load changes from no load to 5 Nm load. It is also able to adapt with sudden speed changes by achieving lowest steady state error. As for quick reversal operation, BLDC motor requires transient capabilities between quadrants. It is necessary to determine the instance when the rotor is ideally positioned for reversal to prevent standstill position. In order to examine the quadrant transient capabilities, M.F.G.S speed controller together with PID and S.T.Fuzzy speed controllers were evaluated under four cases of quadrant transient. From the study, the M.F.G.S controller had the lowest overshoot and steady state error of 0.015 % while transiting from first quadrant to second quadrant under loaded conditions. Overall, M.F.G.S Speed Controller for BLDC outperforms the other two controllers in this study. Hence, the M.F.G.S controller has potential to be used as bidirectional drive in highly dynamic load conditions. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Electrical and Electronics Engineering |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Disertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Theses |