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以典型一阶闭环系统为例,讨论系统频率特性的概念。构造Simulink的仿真模型,绘制了在不同频率正弦输入信号作用下系统的时域响应曲线。分析了系统的暂态响应和稳态响应分量,帮助学生从时域曲线上理解频率特性的概念。教学实践证明,在频率特性的教学过程中引入Simulink仿真技术,丰富了教学手段,变抽象的概念为形象的曲线展示,激发了学生学习仿真软件的热情。
Taking a typical first-order closed-loop system as an example, the concept of system frequency characteristics is discussed. The simulation model of Simulink is constructed, and the time-domain response curve of the system is drawn under the sinusoidal input signal of different frequencies. The system transient response and steady-state response components are analyzed to help students understand the concept of frequency characteristics from the time-domain curve. The teaching practice proves that Simulink simulation technology is introduced in the process of frequency characteristic teaching, which enriches the teaching methods and changes the abstract concept as the curve display of the image, arousing the enthusiasm of students to learn simulation software.