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Getting the seconds elapsed during the simulation with Matlab

Posted Dec 8, 2020, 6:03 p.m. EST LiveLink for MATLAB, Parameters, Variables, & Functions, Results & Visualization Version 5.5 1 Reply

Victor Navarrete
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Good afternoon.

Can anybody help me?

How can I access the seconds elapsed during the simulation?

Which function can help me? and how can I use it? Maybe mpheval or mphglobal?

I want to make a parametric frequency sweep starting at 100Hz and raising the frequency every second elapsed.

1 sec -> 100hz 2 sec -> 110hz 3 sec -> 120hz ....

So I need to get the real time elapsed to evaluate.

1 Reply Last Post Dec 10, 2020, 4:08 a.m. EST
Songcai Han
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Posted: 4 years ago Dec 10, 2020, 4:08 a.m. EST
Updated: 4 years ago Dec 10, 2020, 8:42 p.m. EST

Hi, Victor. First, you need to define ''Times'' in the study stetting as [t0, dt, t0+dt], and then select a strict time stepping. In the Matlab, you can use '' t1 = mphglobal(model,'t','solnum','end') to access the time of the last step, and then use to ''model.param.set('t0',[num2str(t1) '[s]'])'' to reset the initial time. For each time loop, you can change what you need. But i think you can just use Comsol to achieve the process.

All the best,

Songcai

Hi, Victor. First, you need to define ''Times'' in the study stetting as [t0, dt, t0+dt], and then select a strict time stepping. In the Matlab, you can use '' t1 = mphglobal(model,'t','solnum','end') to access the time of the last step, and then use to ''model.param.set('t0',[num2str(t1) '[s]'])'' to reset the initial time. For each time loop, you can change what you need. But i think you can just use Comsol to achieve the process. All the best, Songcai

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