基于Multisim与Matlab的二极管双T电桥仿真分析

Simulation Analysis of Diode double-T Bridge based on Multisim and Matlab

针对二极管双T电桥的原理难以实验演示的问题,提出了仿真分析的方法。用Matlab将理论结果可视化,讨论了电路参数对灵敏度的影响;用Multisim建立电路模型并对电路仿真测量与分析。在条件下测得仿真电路灵敏度系数为26.34m V/p F,非线性误差为2.0%,电路具有线性的输入输出关系,与理论结果基本一致。实验结果表明,该仿真实验验证了二极管双T电桥电路原理,有助于电路原理的理解和教学质量的提升。

In order to solve the problem of experimental demonstration of the principle of diode double-T bridge, a method of using Multisim and Matlab is introduced. Visualizing the theory of the circuit principle by Madab and discussing the influence of circuit parameters on the sensitivity. Constructing and testing the diode double-T bridge circuit model in Multisim. On condition that , the sensitivity of the simulation circuit is 26.34mV/ pF and the non-linear error is 2.0%, so the input-output relation of diode double-T bridge is linear in accordance with the theoretical prediction. The experimental results show that the simulation analysis can verify the circuit principle of diode double-T bridge, is conducive to get a better understanding of the circuit principle and improves the teaching results.