研究了Duffing型电路的非线性特性。介绍了能够产生非线性现象的实验电路。依据Kirchhoff电路原理, 得到Duffing型电路方程的一般表示式。进一步通过编制MATLAB程序对Duffing型电路方程进行模拟仿真。模拟结果显示, Duffing型电路系统能够呈现丰富的动力学行为, 并且模拟结果与实验结果一致。

The nonlinear characteristics of Duffing circuit are researched. An experimental circuit capable of generating nonlinear phenomena is introduced. According to the Kirchhoff circuit principle, the general expression formula of Duffing circuit equation is obtained. Furthermore, MATLAB program is used to simulate the Duffing circuit equation. Simulation results show that the Duffing circuit system can present dynamical behaviors, and the simulation results are in accordance with the experimental results.