I have to optimise an objective function within defined limits

I have to optimise an objective function within defined limits. However, using problem-based optimization, I can only set the lower and upper bounds for input parameters, not the objective function itself. Any suggestions on how to approach this?

Answer 1

[Matt J]

You can set any nonlinear constraint functions that you want, though ideally it would be continuously differentiable. However, bounds on the objective fuction are often not useful, because they can lead to discontiguous feasible sets.

[Sunita]

I am using GA optimizer which gives the value that is not practically possible. So, I was thinking if I could limit the output. any suggestion?

[Matt J]

Ordinary bounds will limit the output as well.