Simulink: Creating a repeating irregular square wave

I want to genereate a square wave to represent different uptimes for a lightning installation over a year.

The schedule over a week is the following: Mon-Thu: 06.00-20.00 Fri: 06.00-18.00 Sat: no uptime Sun: no uptime

So my wave should repeat every 168 hours (one week) and look like this:

    Time Signal  
    0-6     0    
    6-20    1
    20-30   0
    30-44   1    
    44-54   0
    54-68   1
    68-78   0    
    78-94   1
    94-104  0
    104-116 1    
    116-168 0

I've tried some with the repeating sequence block using the following:

    Time values:[0 6 6.001 20 20.001 30 30.001 44 44.001 54 54.001 68 68.001 78 78.001 94 94.001 104 104.001 116 116.001 168]
    Output values: [0 repmat([0 1 1 0],1,5) 0]

But since I'm simulating over 8760 (a year in hours) it seems that the step is f*cking things up.

Is there any better way or good way to make this work?

Thanks a bunch.

Answer 1

[Navaneeth Raman]

Hi,

You can try a couple of things:

1. Try to use discrete solver and see if this is an issue. 2. Check the scope settings to see if you are plotting the data for 24 hours. You might have to uncheck the 'Only 5000 data points' option.

HTH, Navaneeth

[Alexander Flyckt]

Using a discrete solver and then unchecking the "only 5000 data points" solved the problem, thanks alot!