Objective Function to incorperate Rise and settling time for Step response for a plant

I want to know how to make an objective function for my Dc-DC converter controlled with FPID. I want to insert rise time,settling time, Overshoot conpensation and others to my objective function.''e'' is the error signal generating from Simulink model and is being accessed in script file in Matlab to form a objective function.Currently, i'm using following O.Fs .''y1'' are the all Obj.funcs i have tried yet:

% sys_OS=max(vout)-24;

% ISE=sum(e.*e)

y1=sum(Itse)

% y1=ISE+(sys_OS)

% y1=ISE

% y1=sum(e*e);

This is the obj function script i made.

Kindly, if some has litrature on objective function formulation for control system, please share with me.