Improving the Speed Response of BLDC motor by FIPS method

• Main Authors: Liu Wen Chien, 劉玟茜
• Other Authors: Ming-Shyan Wang
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/77239472365353227124

碩士 === 南台科技大學 === 電機工程系 === 99 === The brushless DC motor (BLDCM) owns the advantages of a DC motor as below: large output torque, high performance and the ease of control. Due to no brush required, the volume of the motor can be minimized. The energy efficiency can also be achieved via the electronic commutation. Relying on the Hall-effect sensors, BLDC motor can get the information of rotor position. However, the resolution of the Hall sensor is not so high. It causes the drawback which the speed response is easily affected by the speed variation. Therefore, a new method which can raise the signal frequency of hall sensors through a frequency-independent phase shift (FIPS) is proposed in this thesis. Accompanying with this method, the steady-state error can apparently be reduced. Beside, the noise problem is improved when the motor works under the lower speed. Finally, the DSP TMS3202812 and ALTERA MAXII kit are adopted in the system to implement the proposed scheme.