用零极点动态控制波形图显示的Java小程序实现方法

Java Programming Used in Dynamic Displaying of Wave Controlled by Zeros and Poles

用Java小程序实现了通过拉普拉斯逆变换和z逆变换中s域或z域的零极点动态控制波形图显示的过程。为了增强人机界面的交互性和稳定性,程序采用了Java语言中的鼠标事件来捕获零极点坐标从而动态控制波形图显示,并且也应用了双缓冲技术来消除擦旧画新过程所引起的画面闪烁。实际应用表明,用户通过此程序可以更加方便直观地理解诸如系统稳定性等一系列问题,达到传统教学系统所没有的效果。

This article realizes the dynamic displaying of the signal wave controlled by zeros and poles in Inverse Laplace Transform and Inverse Z Transform.We use mouse events in Java to get the coordinates of zeros and poles and adopt double-buffer method to eliminate the flickering caused by repainting process.Through probation,users can easily understand many problems such as the stability of systems and achieve better effects than conventional education.