Could you please help me in this problem?
I have 3 independent variables, (T,H,t) , as inputs and one output P ( I have all data for these inputs and the output, done experimentally measured every hour during one year).
I want to find a formula of this form: P=f(T,H,t) where t is the time in hours and it is always in the x -axis (index), T is temperature, H is humidity, and P is power.
I have all the data, and when I draw them in the same graph during one year, meaning that P , T , and H vs. hours. I found that the behavior of P is oscillating, making a sinusoidal shape over the entire year:
So, if I make a zoom view to this figure, for example from the 2000 th hour of the year to the 3000 th hour, it is clear that it almost has the same shape but it is oscillating.
So, it keeps oscillating and increasing up to the peak point and then it starts decreasing till the end of the year.
So, how can I predict the structure of the formula that relates P with T , H , and t ?
What is the effect of T,H and t on P .
Is there any approach that you advise me to follow?
Sorry for this long question and any help from you is highly appreciated. I read many papers but I could not know how to solve the problem.