信号与系统课程仿真设计

Simulation design of signal and system course

利用MATLAB的GUI和Simulink对信号与系统课程进行了仿真设计。在GUI设计过程中,利用弹出式下拉菜单进行信号或示波器类型的选取,利用动态文本框控制信号的频率和占空比,控制信号的移位距离和缩放尺度,控制矩形周期信号的周期和脉宽,调节示波器的阶数、截止频率下限和上限,利用axis控件进行图形显示。设计的仿真实验具有良好的交互界面,具有灵活方便的参数输入和动态仿真结果输出功能。仿真实验与信号与系统实验箱结合使用,可以取长补短,做到知识、能力、素质的有机融合,更好地培养学生动手能力、解决复杂问题的综合能力、思维能力和创新能力。

The course of signal and system is simulated and designed by MATLAB GUI and Simulink. In the process of GUI design, the pop-up drop-down menu is used to select the type of signal or oscilloscope, the dynamic text box is used to control the frequency and duty ratio of signal, the shift distance and scale of signal, the period and pulse width of rectangular periodic signal, the order of oscilloscope and the lower and upper limit of cut-off frequency are adjusted, and the axis control is used to display graphics. The designed simulation experiment has good interactive interface, flexible and convenient parameter input and dynamic simulation result output. The combination of simulation experiment and signal and system experiment box can learn from each other’s strengths, achieve the organic integration of knowledge, ability and quality, and better cultivate students’ practical ability, comprehensive ability to solve complex problems, thinking ability and innovative ability.