摘要
针对基于脉冲宽度调制型DC-DC升压变换器输入电压和负载电阻发生变化的情况,设计自适应滑模控制器,使得变换器输出电压跟踪参考值。通过状态观测器设计估计律,得出负载电阻和输入电压的实时估计值。利用估计值信息设计滑模面并结合指数趋近律得到控制律。通过严格的理论分析,升压变换器闭环系统的稳定性得到了证明。Matlab仿真验证了该控制方法的有效性,与基于名义滑模控制方法相比,所提出的方法具有很好地鲁棒性。
To track the reference voltage value,an state observer based on sliding mode control was designed for pulse width modulation based on DC-DC Boost converter subject to the change of input voltage and load resistance. The real-time values of the load resistance and input voltage were estimated through the state observer using the law of estimation. The control algorithm was obtained by sliding mode surface which was designed using the estimated information and the exponential reaching law. Through rigorous analysis,the stability of closed- loop system of Boost converter was proved. Matlab simulation verifies the effectiveness of the proposed control algorithm,and compared with the nominal sliding mode control method,the proposed method has better robustness.
作者
王攘攘
张广明
梅磊
WANG Rangrang;ZHANG Guangming;MEI lei(College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211816,Jiangsu,China)
出处
《电气传动》
北大核心
2019年第5期55-58,78,共5页
Electric Drive
基金
国家自然科学基金项目(51307080)
江苏省重点研发计划项目(BE2017164)
