现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2015年
9期
121-124
,共4页
同步Buck变换器%极点配置%峰值电流模式%实验仿真
同步Buck變換器%極點配置%峰值電流模式%實驗倣真
동보Buck변환기%겁점배치%봉치전류모식%실험방진
synchronous Buck converter%pole-placement%peak current mode%experimental simulation
研究同步Buck变换器的连续时间模型和离散时间模型，分析了变换器工作于峰值电流模式控制下负载恒定和负载动态变化的闭环系统，应用全状态反馈设计闭环系统的控制策略，使用PSPICE软件对设计电路进行搭建，仿真结果表明，设计的动态跟踪系统不仅能实现闭环极点的任意配置，而且能跟踪参考给定值并实现零稳态误差。最后，用Matlab分析了与负载变化相关的闭环极点灵敏度。
研究同步Buck變換器的連續時間模型和離散時間模型，分析瞭變換器工作于峰值電流模式控製下負載恆定和負載動態變化的閉環繫統，應用全狀態反饋設計閉環繫統的控製策略，使用PSPICE軟件對設計電路進行搭建，倣真結果錶明，設計的動態跟蹤繫統不僅能實現閉環極點的任意配置，而且能跟蹤參攷給定值併實現零穩態誤差。最後，用Matlab分析瞭與負載變化相關的閉環極點靈敏度。
연구동보Buck변환기적련속시간모형화리산시간모형，분석료변환기공작우봉치전류모식공제하부재항정화부재동태변화적폐배계통，응용전상태반궤설계폐배계통적공제책략，사용PSPICE연건대설계전로진행탑건，방진결과표명，설계적동태근종계통불부능실현폐배겁점적임의배치，이차능근종삼고급정치병실현령은태오차。최후，용Matlab분석료여부재변화상관적폐배겁점령민도。
Continuous?time state model and discrete?time model of the synchronous Buck converter are studied,the con?stant load and dynamic load of the close?loop system is analyzed which is controlled by peak current mode of the Buck converter. The close?loop system is designed based on the full?state feedback,the design circuit is constructed by PSPICE software,and simulation results show that:the output voltage is followed by the reference,the zero steady?state error is obtained,and the closed loop poles are arbitrarily placed,with the proposed dynamic tracking system. Finally,the sensitivity of the closed?loop poles with the relavant of load variation is analyzed by MATLAB software.
