On 2?9?, ??3?25?, workaholic <liua...@gmail.com> wrote: > Actually,my equation is like: > > M*dy = f(y). > > Although M is nonsingular, but the inv(M) is very complicated, and > when put to the right side,it turns out to be abnormal output of some > of the states stay zero. So I have to use the Mass option in the > odeset. > > And f(y) is so complicated a nonlinear equation that I can't draw it > out in Simulink using small nonlinear blocks.So I have to use the s- > function block. > > So where to add the options in s-funtion block in Simulink? I looked > up the docs of s-function but it seems that there is no guidance there > for such a case, then how can I do? Is there anyway to convert the > equation to another form? > > Thanks in advance!
Can I utilize the level 2 m-function? Can it help?