how to write cosdelta alphain MATLAB coding

2019 4 3
1 个回答
更新时间：2019 4 5
5 次查看（30 天）

0 个投票

cosd(delta+alpha)

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Adam Danz
Adam Danz 2019-4-3
编辑：Adam Danz 2019-4-3
That is matlab code (assuming delta and alpha are variables).
cosd() is the cosine function for inputs using degree units rather than radians.
asna akhtar
asna akhtar 2019-4-4
yes i have done it exactly the same still its giving me an error.
Adam Danz
Adam Danz 2019-4-4
Please show us the values for delta and alpha.
Also what are the results of the following 3 lines?
size(delta)
size(alpha)
which cosd -all
asna akhtar
asna akhtar 2019-4-4
i am working on the topic of voltage stability for IEEE 30bus test system and I've written all the coding which is required but unable to calcultate gvsm just because of the cosine angle
<<
<<www-mathworks-com-matlabcentral-answers-uploaded_files-212011-20190404_220858.jpg>>
>>in this program k is delta difference which is the difference of sending and receiving end. I'll be grateful to you if you could help me.
asna akhtar
asna akhtar 2019-4-4
<<www-mathworks-com-matlabcentral-answers-uploaded_files-212012-20190404_220858.jpg>>
Adam Danz
Adam Danz 2019-4-4
The links are broken.
To offer more advice, I just need this:
Please show us the values for delta and alpha.
Also what are the results of the following 3 lines?
size(delta)
size(alpha)
which cosd -all
asna akhtar
asna akhtar 2019-4-5
there are many values of delta and alpha because they are in 1×30 matrix form so it is not possible to write all the values.
Adam Danz
Adam Danz 2019-4-5
But you could provide a sample of those values and you could definitely provide the results of the three lines of code. Good luck.

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回答（1 个）

madhan ravi
madhan ravi 2019-4-3
编辑：madhan ravi 2019-4-3

0 个投票

cosd(bsxfun(@plus,Delta+Alpha)) % assuming units are degrees else use cos()

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