How to use PI controller for a particular discrete time step only within the sampling time?

Hi, I am a simulink user.For eg i took sampling time as 1 microsec.All i want is to use PI controller only for 0.3microsec (ie remaining 0.7microsec it should halt ) and output of the PI controller i want to use for another purpose which takes the remaining sampling time ie 0.7microsec. And i want to repeat this procedure every 1 microsec.

Answer 1

[MULI]

Hi Ahammad,

Here I am providing one of the possible approaches which provides the desired result.

Set the pulse width of a pulse generator to 30% which generates the output such that it will be high upto 0.3 microsec and zero for remaining time.

Multiply the pulse generator output with output of PI Controller. A NOT gate can be used to get the output for remaining time.

Here I am attaching the Simulink layout and its output.