This thesis focuses on compact brushless DC fan motor, drive circuit structure of motor is proposed, several functions such as output low current limit circuit and low rotation speed limit are added in order to increase robustness of drive circuit. Besides, speed feedback controller is used to solve several problems such as high frequency full speed exciting noise and high power dissipation which occurs in open loop rotation speed control circuit.With regard to BLDC fan motors generally use Hall sensor to detect rotor position, this research proposes sensorless control technology for the purpose of reducing circuit cost and motor size.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-1017106-123103 |
| Date | 17 October 2006 |
| Creators | Chang, Hsieh-ying |
| Contributors | Tzuen-Lih Chern, Chih-Chiang Cheng, Geeng-Kwei Chang, Tzuen-Lih Chern, Far-Wen Jih |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1017106-123103 |
| Rights | not_available, Copyright information available at source archive |
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