虛擬根值法之順滑模態控制應用於升壓型直流轉換器

Abstract

本論文運用虛擬根值法，提出一種新型的順滑模態控制器應用於升壓型直流轉換器的電壓調節上。由於升壓型直流轉換器是雙線性系統，如何確定系統是否能進入順滑模態，須藉由迫近順滑範圍(RAS region) 和穩定順滑範圍(SS region)的條件來確認之。理論上，如果系統的初始狀態位在迫近順滑範圍，那麼系統的軌跡將在穩定順滑範圍內到達順滑模態，然後被導向控制目標。根據Matlab / Simulink之數值模擬結果，本論文所提出的順滑模態控制器能夠確實驅動升壓型直流轉換器到達設定的電壓。

A novel sliding mode controller based on the virtual eigenvalue method is proposed for the voltage regulation of the DC-DC Boost converter, which is a bilinear system. It is required to determine the sliding function first and then locate the related reaching-and-sliding(RAS) region and stable-sliding(SS) region. Theoretically, if the system is initially in the RAS region, its trajectory will be driven to reach the sliding mode in the SS region and approach the control goal. From the numeric results simulated in Matlab/Simulink, the proposed sliding-mode control is indeed able to regulate the converter to the desired voltage.