| 定频滑模控制Buck变换器设计 |
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| 引用本文： | 倪雨,许建平,孙璐.定频滑模控制Buck变换器设计[J].电子科技大学学报(社会科学版),2010(4). |
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| 作者姓名： | 倪雨 许建平 孙璐 |
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| 作者单位： | 成都信息工程学院控制工程学院;西南交通大学电气工程学院;四川托普信息技术职业学院计算机系; |
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| 基金项目： | 国家自然科学基金(50677056) |
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| 摘 要： | 针对滞环调制的滑模控制开关变换器的开关频率随输入电压或负载变化而变化的问题,介绍了一种可以将切换函数直接转换成固定频率的开关控制信号的定频调制方法。详细分析了该调制方法的工作原理,给出了一种模数混合电路实现方案,研究了其在滑模控制Buck变换器中的应用。通过计算机仿真研究了该定频调制技术的可行性和有效性,仿真结果表明该调制技术保持了滞环调制具有快速瞬态调节能力,同时具有恒定开关频率、利于滑模控制器的集成和数字实现的优点。
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| 关 键 词： | 调制技术 滑模控制 滑模面 切换函数 |
Design for Sliding Mode Controlled Buck Converters with Constant Frequency |
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| NI Yu,XU Jian-ping , SUN Lu.Design for Sliding Mode Controlled Buck Converters with Constant Frequency[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2010(4). |
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| Authors: | NI Yu XU Jian-ping SUN Lu |
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| Institution: | NI Yu1,XU Jian-ping 2,, SUN Lu3 (1. College of Automatic Control Engineering,Chengdu University of Information Technology Chengdu 610225,2. School of Electrical Engineering,Southwest Jiaotong University Chengdu 610031,3. Department of Computer,Sichuan TOP Vocational Institute of Information Technology Chengdu 611743) |
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| Abstract: | To resolve the problem that the switch frequency of sliding mode control (SMC) switching power converter with hysteresis modulation method changes with the variation of the input voltage or load,this paper presents a fixed-frequency modulation method that can directly convert a switching function to a fixed-frequency switching control signal. The operation principle of the modulation method for a SMC buck converter is described,and its mixed implementation circuits was given. Simulation results show that th... |
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| Keywords: | modulation technique sliding mode control sliding surface switching function |
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