Using Timer to switch off a switch in Simulink

Hi Everyone,

Hope everyone is surviving the panademic ok. I need some assitance.

I'm using Simulink for modelling and I require a Matlab function to switch on/off a switch. When the switch is 1 its open and vice versa. For my model, when my voltage drops below 0.5 (input to my Matlab function) I want to disconnect my system (switch =0, output of my function) if the voltage drop lasts longer than 2s. I'm trying to implement this using a timer object. Is this preferred method to do this? So far, I'm getting the following error with my code>? "The 'timer' class does not support code generation".

Answer 1

[Fangjun Jiang]

No need or it's hard to do it using MATLAB Function block. Hope this answer gives you a clue.

https://www.mathworks.com/matlabcentral/answers/510113-check-if-a-condition-is-true-for-a-certain-time-simulink

[Shane O'Connor]

Hi Fangjun,

That worked, thank you !! I had to do some changing around.

Have an enjoyable day!