非周期信号LC与RC滤波的数值分析研究  

Numerical Analyses and Research of LC and RC Filter Circuits for Nonperiodic Signal

作　　者：周靖[1] 周建斌[1] 洪旭[1] 马英杰[1] 王敏[1] 周伟[1] 

机构地区：[1]成都理工大学核技术与自动化工程学院,成都610059

出　　处：《系统仿真学报》2016年第12期2939-2945,共7页Journal of System Simulation

基　　金：国家自然科学基金(11475036;41404108)

摘　　要：用数值方法将LC与RC滤波电路用于直流电源输出电压中非周期信号的滤波分析。采用微分方程数值解方法求解电路微分方程数值递推解,从而建立电路的数值模型,该模型可用于对非周期信号滤波的定量分析中。发现了LC与RC滤波电路在对直流电源输出电压进行滤波时的不足,通过引入LRC滤波电路,数值仿真结果表明,该电路能克服单独使用LC或RC滤波电路时的不足,能够同时对纹波和噪声都能很好地滤除。提出了在实际应用中对直流电源输出电压中非周期信号进行滤波时,应采用LRC滤波电路取代LC、RC滤波电路。With a numerical method, LC and RC filter circuits were used to the nonperiodic signal filtering analyses in DC power output voltage. By applying the method of numerical solution of differential equation, the numerical recursive solution of circuit differential equations could be obtained, thus, numerical models of circuits could be established. The numerical models could be used to the quantitative analysis of nonperiodic signal. The defects of LC and RC filter circuits in DC power output voltage filtering were indicated, LRC filter circuit was introduced, and numerical simulation results show that this circuit can overcome the defects of LC and RC filter circuits, thus, ripple and noise can be mostly faltered, lt＇s proposed that LC and RC filter circuits shouM be replaced by LRC filter circuit in the practical application of DC power output voltage nonperiodic signal filtering.

关 键 词：LC滤波电路 LRC滤波电路 非周期信号 数值化模型 数值分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]