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Buck电路求解方法的研究
引用本文:王鑫,马斌,宁延东,邹德旋.Buck电路求解方法的研究[J].科技广场,2012(1):165-169.
作者姓名:王鑫  马斌  宁延东  邹德旋
作者单位:1. 沈阳建筑大学信息与控制工程学院,辽宁沈阳,110168
2. 中国建筑东北设计研究院有限公司,辽宁沈阳,100107
3. 东北大学信息科学与工程学院,辽宁沈阳,110004
摘    要:滞回比较器是一种多用途的比较器,本文中选择它来控制Buck电路。利用滞回比较器的滞回特性控制Buck电路的输出在一个很小的范围内变化,从而保证了系统具有很高的稳定性。对受滞回比较器控制的Buck电路而言,其输出的求解方法有状态空间法、微分方程法以及拉普拉斯变换法等。本文所提出的算法是基于状态空间法的,并在其基础上引入一种等价无穷小的概念,从而化简了转移矩阵,避免了由于直接利用状态空间法解方程而带来的不便。通过Matlab编程以及PSPICE仿真,都有力地验证了本解法的有效性和正确性。

关 键 词:滞回比较器  状态空间  拉普拉斯变换  等价无穷小  转移矩阵

Study on Solving Method of Buck Circuit
Wang Xin Ma Bin Ning Yandong Zou Dexuan.Study on Solving Method of Buck Circuit[J].Science Mosaic,2012(1):165-169.
Authors:Wang Xin Ma Bin Ning Yandong Zou Dexuan
Institution:Wang Xin Ma Bin Ning Yandong Zou Dexuan(1.School of Information Science and Controlling Engineering,Shenyang Jianzhu University,Liaoning Shenyang 110168;2.China Northeast Architecture Design & Research Institute Co.,Ltd,Liaoning Shenyang 110004;3.School of Information Science and Engineering,Northeastern University,Liaoning Shenyang 110004)
Abstract:Hysteresis comparator is a multi-purpose comparator,and it’s used to control Buck circuit in this paper.The hysteresis characteristic of hysteresis comparator can be utilized to control the output of Buck circuit to vary in a small area so as to confirm the high stability of system.There has many solution strategies for Buck circuit controlled by hysteresis comparator,Such as:state space equation,differential equation and Laplace transform and so on.The solution strategy in this paper is based on state space,and the defination of equivalent infinitesinal is introduced to avoid the discommodity brought by using state space straightly.The validity and correctness of this solution strategy is validated effectively by Matlab programming and PSPICE simulation.
Keywords:Hysteresis Comparator  State Space  Laplace Transform  Equivalent Infinitesimal  Transition Matrix
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