一种在Multisim中快捷测量相位差的仿真方法

A Simulation Method for Fast Measurement of Phase Difference in Multisim

Multisim是模数混合电路的设计和仿真分析工具,其功能强大,使用方便;但是在常规的电路仿真分析情况下,Multisim软件并不能完成进行相位差测量时的直接读数,为解决这一问题,提出了一种利用受控源与波特图仪构建的测量电路,并给出了信号相位差的一种精确、快速的仿真测量方法,通过对实例电路的仿真测量,说明测量方法及测量误差。测量结果表明可利用Multisim对正弦稳态的测量过程中完成对任意电压的相位差测量,并利用波特图仪直接显示。仿真实验结果说明在Multisim中利用该测量方法其测量相位差具有良好的实时性和准确度。

Multisim is a mixed analog-digital circuit design and simulation tools,it is powerful,easy for use. But in the conventional circuit simulation cases,Multisim software does not complete the phase difference measurement which cannot be read directly. To solve this problem,this paper proposes a method by combining Bode plot with controlled sources and measuring circuit to construct and phase difference. It can give an accurate,rapid measurement simulation. Measurement results show that the use of Multisim can measure steady sinusoid with any circuit voltage and the phase difference,and the measurement result is displayed directly by using Bode plot. Simulation results show that the method can measure the phase difference and has good real-time performance and accuracy.