DSP Implementation of Fuzzy Dynamic Observer For DC-DC Converter Output Voltage

• Main Authors: Bo-Yuan Wang, 王柏元
• Other Authors: 劉寅春
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/95418290475258852278

碩士 === 淡江大學 === 電機工程學系碩士班 === 99 === In this thesis, according LMI-based Control for Fuzzy and nonlinear systems to implement the DC-DC buck converter output voltage regulation. First, the nonlinear system is represented by several fuzzy subsystems where the consequent parts are linear dynamical systems. Then by blending these rules, we exactly represent the original nonlinear dynamical systems. Following the modeling stage, a fuzzy state feedback controller for each linear subsystem is designed with same variables as that of the fuzzy plant model representation. Using Lyapunov’s direct method, the stability analysis is carried out on the overall closed-loop system. The sufficient conditions arising from the stability analysis is then formulated into linear matrix inequalities. We using MATLAB to simulate the LMI voltage output and then make electronic circuit DC-DC buck converter. In the end use DS1104 controller and MATLAB Simulink toolbox to achieve LMI-based controller, and the experiment result indicates LMI-based theory can implement into PWM DC-DC buck converter, and it can also can regulate the voltage on load changes or voltage changes situation