Updating an Iteration with new value

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Kamilu Sanusi 2023-1-28

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https://ww2.mathworks.cn/matlabcentral/answers/1902445-updating-an-iteration-with-new-value

评论： Kamilu Sanusi 2023-1-29

Hello everone,

I am trying to solve an equation of which i need to be using the new values of V and delta as an update in equations (1). Please which one of equations (2 & 3) is the correct updating code for new values;

% P(i) = sum(j=1->n) |Vi||Vj|(Gij * cos(delta_i - delta_j) + Bij * sin(delta_i - delta_j) equation (1) % The formula for calculating the P

Implementation of P(2) for example:

P(2) = P(2) + V(2)*V(1)*(G(2,1)*cos(delta(2)-delta(1)) + B(2,1)*sin(delta(2)-delta(1))) + V(2)*V(2)*(G(2,2)*cos(delta(2)-delta(2)) + B(2,2)*sin(delta(2)-delta(2))) + V(2)*V(3)*(G(2,3)*cos(delta(2)-delta(3)) + B(2,3)*sin(delta(2)-delta(3))) + V(2)*V(4)*(G(2,4)*cos(delta(2)-delta(4)) + B(2,4)*sin(delta(2)-delta(4))) + V(2)*V(5)*(G(2,5)*cos(delta(2)-delta(5)) + B(2,5)*sin(delta(2)-delta(5)))

THANK YOU

   Vprev = V;
    deltaprev = delta   

........................................................................................................

    for i = 1:5
        for j = 1 : 5
            P(i) = P(i) + V(i)*V(j)*(G(i,j)*cos(delta(i)-delta(j)) +  B(i,j)*sin(delta(i)-delta(j)))        equation (2)
        end
    end

    for i = 1:5
        for j = 1 : 5
            P(i) = V(i)*V(j)*(G(i,j)*cos(delta(i)-delta(j)) +  B(i,j)*sin(delta(i)-delta(j)))           equation (3)
        end
    end      
    