摘要
在教学中,为了有效地将信号与系统、模拟电路的相关知识联系起来,采用PSPICE仿真软件中电路图与系统函数两种分析方法,对二阶压控电压源低通滤波器进行了仿真实验研究。分析了滤波器的Q值和RC滤波电路中的电阻和电容对幅频特性的影响,以方波作为输入信号,对输入/输出的波形及频谱进行了分析,分析结果与理论计算基本一致。该方法有利于学生进一步理解信号、系统和电路三者之间的关系。
In order to keep effectively touch with the relative knowledge of analog circuits and signals and systems in the teaching process,a simulation experimental study was carried out,in which about low-pass filter of the second order voltage-controlled voltage source was studied.In this study,the influences of magnitude-frequency characteristic on Q value of filter,resistor and capacitor in the RC filter circuit,and waveform and spectrum of I/O Input/Output thorough the Square wave as input signal were analyzed by PSPICE software of circuit simulation analysis and two analysis methods including circuit diagram and system functions.Above analyzed results show that the actual waveform and spectrum of filter are consistent with those of theoretical calculation.It will helpful for students to further understand the close relationship between the signal,the system and the circuit.
出处
《实验技术与管理》
CAS
北大核心
2017年第2期101-104,共4页
Experimental Technology and Management
基金
重庆市教委教育教学改革项目(153140
143010)
