如图所示的采样系统结​构，如何搭建Simu​link仿真图？

这里的两个采样开关e 和u在Simulink的Browser里面找不到，请问这个仿真图怎么搭建，万分感谢！

[Walter Roberson]

Approximate translation:

Sampling system architecture as shown, how to build Simulink simulation map?

Here are two samples of switch e and u can not find in the Simulink Browser inside, how does this simulation diagram structures, thanks!