MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn moreOpportunities for recent engineering grads.

Apply Today**New to MATLAB?**

Asked by Kiran Sagar
on 29 Mar 2013

Here are two scopes of the same simulation run for different run times 50s and 100s. For 50 s, the concerned parameter remains constant but not in case of 100s, it starts changing after ~17 s, but in negligible magnitude. has anyone faced the same problem, if yes, is there any explanation to it.

here are the images: 50 s: http://i.imgur.com/CKVlm9M.png

Answer by Azzi Abdelmalek
on 29 Mar 2013

I 've faced the same problem, I was using 1/p block. But could not find the explanation.

Azzi Abdelmalek
on 29 Mar 2013

The only logical explanation I can guess, is: if the solver's step time is set to variable, then for different stop time, the variable step time changes differently.

Kiran Sagar
on 30 Mar 2013

seems a bit long shot but its the only possible explanation.......yes the solver is set to variable......any possible solutions ????

## 1 Comment

## Kiran Sagar (view profile)

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/69122#comment_139866

i have not disturbed/changed the scale of the graph.....in case somebody thinks that way