A program to recognize and reward our most engaged community members
Applications that use the optimization feature of Embed
Hi WoodyRKW,
There are two types of optimization: per time step and per simulation run. Which one are you interested in? Also, have you looked at the optimization examples under Examples > Optimize.
Best Regards,
Karen
Hi Karen
Thanks for the reply.
I have reviewed the examples under Optimize but not able to resolve issue.
Am I able to send you a couple of files ———- I think would make it easier to determine
why I am experiencing the present situation.
Reg
Hi Reg,
If you could attach the diagrams to this discussion, it will be easier for Embed team and Tech Support to review and make recommendations.
Thanks,
Hi Karen,
Many thanks for your replies.
I have attached some files for your reference.
I hope that I have not made some dumb mistake in settting up the optimization.
You will note that the optimizations files show some unexpected results. The ISE values are also higher that obtained using trial and error (selected) controller constants.
Do not hesitate to ask for clarification or additiional information.
I am making some mistake in my communication —————— how do I avoid the
YES/NO??? What should I do to avoid use of "Post Comment"?
Material I sent to you is not appropriate as a general comment.
Did you receive my communications ——— sent earlier today.
Hi Woody,
The optimizers will vary the parameter unknowns searching for a minimum cost solution. In the process it might try values that can disrupt your model if it isn't carefully constructed. In your case you had a sqrt in your plant that could go negative for certain values of a1 and a2, which causes a system fault to be detected and disrupts the optimization process. I added a limit block to prevent a negative value flowing into the sqrt and the optimization went fine. A few more points: you should use fixed bounds so can see the responses that the optimizer gets when trying different values, you should be sure to keep wires as short as possible to keep the diagram compact and easily understandable.
I've attached your modified diagram illustrating the points above.
