Discrete modified PI control system simulation

Hi, I'm triyng to simulate a discrete modified PI control system in
Simulink as blocks of z-transforms but the plant that is going to be
controlled is a continuous one. So I need to sample the output of the
plant(the controlled variable) in order to use this sampled signal as
an input to the discrete controller.

I've heard this could be done by using the "clock" block of Simulink
but I don`t know how to use it. Does anyone know how to use this block
or another way to sample a continuous signal in Simulink?

Thanks,

Eduardo Gonzez Start a New Thread