T-S Fuzzy Controller Design for Buck-Boost LED Driver

• Main Authors: Chuna-Hsiao Huang, 黃全孝
• Other Authors: Chian-Song Chiu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/wyu989

碩士 === 中原大學 === 電機工程研究所 === 99 === The purpose of this thesis is to design a T-S fuzzy dimming controller for an unknown arranged LED array. In the past, the LED driving controller design only focuses on efficiency improvement, so that we should know the composition of the LED array, i.e., the application is limited. To solve this problem, we will use the DC/DC Buck-Boost circuit as a driver circuit and apply T-S fuzzy theory to design the controller of buck-boost converter. The advantage of this approach is fast convergence and high stability. The control gains are obtained by solving a set of LMIs. In order to verify the validity of the proposed control method, we apply digital signal processing card (DSP card) to implement the controller. Finally, we end up with close-loop system simulations.