Sum of Optimization Variables NOT working

7 次查看（过去 30 天）

Micah Mungal 2020-1-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/502857-sum-of-optimization-variables-not-working

回答： Micah Mungal 2020-2-1

Hi, I am trying to find the sum of an optimization variable. However I am getting no output when the optimization variable contains quadratic terms. For exmaple, if I try to find the sum of an optimization array containing terms such as:

6.19*power(1, 'P_1') + 17.26*power(1, 'P_2') + 16.6*power(1, 'P_3') + 16.5*power(1, 'P_4') + 19.7*power(1, 'P_5') ...

I am able to find the sum.

However, when the array contains terms such as:

0.00048*power(1, 'P_1')^2 + 0.00031*power(1, 'P_2')^2 + 0.002*power(1, 'P_3')^2 + 0.00211*power(1, 'P_4')^2 + 0.00398*power(1, 'P_5')^2 + .........

And I attempt to find the sum, I dont get an output. Neither do I get an error message. The "ans" variable is empty.

Any help is greatly appreciated.

6 个评论
显示 4更早的评论隐藏 4更早的评论

Walter Roberson 2020-1-31

编辑：Walter Roberson 2020-1-31

Which MATLAB release are you using?

We might need a copy of the xlsx files, just in case the problem is data-specific somehow.

Micah Mungal 2020-1-31

I have noticed however, that I can find the sum of optimization expressions when there are no quadratic terms. This is the case for the powerCost2 variable where temp_powerCost2 is also an array of optimization expression but with NO quadratic terms. I only get the problem for powerCost1 where the optimization expressions in diag_quadcost contains quadratic terms. Not sure if this is some limitation of MATLAB?

请先登录，再进行评论。

请先登录，再回答此问题。