Integration of MATLAB function - NOT Mathematic function.
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Hi, I have three MATLAB script, with one serve as a main class. I want to integrate an expression which contain two other functions,
Code:
x = 0:180;
TB = integral(getCt_Theta(x)*getQ_2(x),1,180);
Where: getCt_Theta(x), is a function to calculate coefficient of lift, will return one values for each inputs Same goes for getQ_2(x), The reason for this task is to evaluate half revolution of the turbine. Should I do symbolic first? or should I Simulink it?
Thanks everyone!
2 个评论
Walter Roberson
2016-9-2
Your x is the integral values from 0 to 180, but you mention x in your integral() and you want the integral to be over 1 to 180. Is your x intended to be continuous or discrete, and is it intended to be 0 to 180 or 1 to 180 ?
采纳的回答
Walter Roberson
2016-9-3
f = @(x) getCt_Theta(x).*getQ_2(x)
and integral that:
integral(f, 0, 180)
However, this depends upon getCt_Theta and getQ_2 accepting vectors of values. If they cannot, if they can only accept scalars, then you need
integral( @(X) arrayfun( f, X), 0, 180)
更多回答(1 个)
Pawel Ladosz
2016-9-2
You could try and change your matlab function to function handle by:
getCt_Theta_fun=@getCt_Theta
Then you can use this is as input to integral. However I am not sure whether it would deal with multiplication of the function handles.
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