| MATLAB在频率特性Bode图中的应用 |
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| 引用本文： | 刘娟.MATLAB在频率特性Bode图中的应用[J].辽宁工程技术大学学报(自然科学版),2012,31(1):85-88. |
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| 作者姓名： | 刘娟 |
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| 作者单位： | 渤海船舶职业学院电气工程系,辽宁葫芦岛,125000 |
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| 基金项目： | 辽宁省教育厅基金资助项目(L2010172) |
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| 摘 要： | 在工程实践中,广泛应用经典控制理论的频域分析对自动控制系统进行分析和设计.Bode图是频域分析的重要环节,系统的闭环频域指标能够根据Bode图计算得出,从而分析自动控制系统闭环稳定性、快速性、准确性.传统手工绘制Bode图的方法存在很多弊端,不仅需要花费大量时间,而且不精确.MATLAB软件具有强大的计算能力和绘图功能,能够快速、准确地做出频率特性曲线.利用MATLAB绘制系统的Bode图,为控制系统设计和分析提供了极大的方便.
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| 关 键 词： | 自动控制系统 MATLAB 频域分析 闭环频域 Bode函数 动态结构图 Bode图 频域指标 |
Application of MATLAB in frequency characteristics Bode diagram |
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| LIU Juan.Application of MATLAB in frequency characteristics Bode diagram[J].Journal of Liaoning Technical University (Natural Science Edition),2012,31(1):85-88. |
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| Authors: | LIU Juan |
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| Institution: | LIU Juan(Department of Electrical Engineering,Bohai Shipbuilding Vocational College,Huludao 125000,China) |
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| Abstract: | Frequency domain analysis in classical control theory is widely applied in automatic control system analysis.Bode diagram is an important component in the frequency domain analysis.The closed-loop system’s frequency domain index is calculated based on Bode graph.Therefore,the closed-loop stability,rapidity and accuracy can be analyzed.However,there are some drawbacks using traditional hand drawing on Bode graph,i.e.,time consuming and inaccuracy.MATLAB software has a powerful computing capability and graphical function,which can fast and accurately draw a frequency characteristic curve.A case study demonstrates the drawing of the system’s Bode diagram using MATLAB.It provides a great convenience for control system design and analysis. |
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| Keywords: | automatic control system MATLAB frequency domain analysis closed loop frequency Bode function dynamic structure diagram Bode diagram frequency domain indexes |
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