Error using decic to estimate consistent initial conditions

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Siddharth A 2021-1-8

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评论： Nicolas Mira Gebauer 2021-8-12

Hey guys,

Have been encountering the following error while using decic:

Error using decic>sls (line 129)

Try freeing 8 fixed components.

Error in decic (line 78)

[dy,dyp] = sls(res,dfdy,dfdyp,neq,free_y,free_yp);

Error in DDP_Jan2 (line 122)

[y0,yp0] = decic(@massbal,z0,y0,[1 1 1 1 1 1 1 1],yp0,[])

I ain't understanding which components to free and on freeing it says index might be greater than one. But isLowIndexDAE shows mine is an index 1 system. Please find attached my code and kindly suggest corrections.

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Nicolas Mira Gebauer 2021-8-12

Hi, could you solve the problem?

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MATLAB Mathematics Numerical Integration and Differential Equations

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