Matlab Simulink variable's time

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Darka 2014-4-1

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回答： Darka 2014-5-18

Hello,

I want to know more about Matlab Simulink variable's time. I need an option to measure how long the variable maintains its value in Matlab Simulink during simulation mode and how many times variable's value has changed.

Any ideas how to do that?

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Giuseppe Naselli 2014-4-4

did you see my answer? if you use it and it works please accept it :) G

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Answer 1

Giuseppe Naselli 2014-4-1

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Hi Darka,

you can log your variable using a "outport" for example (or a "to Workspace" block), you can also set your model to give the variable time in the Matlab workspace at the end of the simulation(from Model Configuration Parameter) and then once the simulation finishes you can plot/post process your variable in Matlab and see how it chances

Alternatively you can use the DETECT CHANGE block (in the Logic and Bit Operation Simulink Block Library) and then log the output of this block

I hope this help

G

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Answer 2

Darka 2014-5-18

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Hello,

Sorry I am newbie in Matlab Simulink.

I want to have a timer (stopwatch) which will be always enabled since the value is 0. If the value changes to something else, for example 6, then a timer will be reset and it will begin to count again when this value changes to 0. I want to check if this value is 0 or not for 60 seconds.

How can I do that?

Best regards,

Darka