Minerr (MathCAD) Function Equivalent for MatLab?

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Nicholas Clark 2023-1-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1890792-minerr-mathcad-function-equivalent-for-matlab

回答： Raghav 2023-3-7

I have the following code from MathCAD that I want to translate to MatLab. Anyone know how to do this?

v1 = 0;

v2 = 8;

v3 = 12;

v4 = 20;

ID1 = 33.8e-9;

ID2 = 46.1e-9;

ID3 = 50.4e-9;

ID4 = 60e-9;

Rs = 0.01;

N = 1;

IS = 1e-8;

VTH = 0.0259;

v1 = Rs*ID1 + N*VTH*log(ID1/IS);

v2 = Rs*ID2 + N*VTH*log(ID2/IS);

v3 = Rs*ID3 + N*VTH*log(ID3/IS);

v4 = Rs*ID4 + N*VTH*log(ID4/IS);

Minerr(Rs,N,IS)

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Steven Lord 2023-1-9

For those of us who haven't worked with MathCAD, can you explain a bit about the purpose of the Minerr function (what does it do?) and/or link to some documentation for the function? That may help us suggest an appropriate equivalent or near-equivalent in MathWorks products.

Nicholas Clark 2023-1-9

So from what I read online, it is a function that solves a system of equations for particular variables (in this case RS, N, IS) by using an approximation method with an initial guess.

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Answer 1

Raghav 2023-3-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1890792-minerr-mathcad-function-equivalent-for-matlab#answer_1187155

Hi,

Based on the question, it can be understood that you need to know about a similar method as ‘Minerr” of MathCAD in MATLAB.

I am not aware of any built-in function similar to ‘Minerr’ in MATLAB as of now.

However, you can check ‘minres’ function of MATLAB which is used to solve system of linear equations with minimum residual method. You can refer to the below mentioned link for more details:

https://www.mathworks.com/help/matlab/ref/minres.html

Hope it helps.

Thanks,

Raghav Bansal