Boost變換器滑模變結構控制策略的研究

摘要：本文提出一種針對Boost變換器的滑模變結構控制器的數字化實現。Boost變換器由于存在開關動作是一種非線性系統，滑模變結構控制可以改變控制器結構，本質上適用于非線性系統。仿真數據表明，滑模控制器具有更好的動靜態特性。整個系統可以穩定的工作在較寬的負載范圍內，并且對外部擾動和系統內部參數變化不敏感。 敘詞：Boost變換器 滑模變結構控制 數字控制 Abstract：The article proposed an implementation of sliding mode controlled boost converter. The boost converter is a kind of non-linear system since the switching action was introduced to adjust the output voltage. Sliding mode control with the ability of changing the controllers structure, as known as the variable structure control (VSC) is designed especially for non-linear system. The results of simulation shows the sliding mode controlled boost converter have more convenient performances. The boost converter can work in a load wide range, as it is not sensitive to the disturbance of the load and the parasitic parameters. Keyword：Boost converter, Sliding mode control, Digital control