CCS: Algebraic loop is not supported in generated code

Hi,

Algebraic loops are unsuitable for both simulation and code generation from Simulink.

https://www.mathworks.com/help/simulink/ug/algebraic-loops.html?s_tid=srchtitle

When Simulink starts simulation, it actually uses a very special non-linear solver the algebraic loop for you internally because otherwise it is impossible to run the simulation. This solver is computationally expensive, and also has limits on what it can do. One of the limitations is code generation, which is noted in the doc link above.

As a best practice, your should fix your algebraic loops before simulation. And this also will enable you to generate appropriate code for a processor (which also can not run code in algebraic loops). The quickest way to do this is to introduce a memory block -> it basically sets z(k) = z(k-1); and breaks the loop. 

Algebraic Loop Highlighting

For more support, please contact MathWorks Technical Support.

Cheers,

-Brian

Thanks Brain.  It is solved now.  So puting z^-2 delay is solution in my case.