dae2.m solves a set of differential algebraic equations (DAEs)
f(t,y,y')=0 where y'=dy/dt
with a 2nd order method starting from y0 at time t0 and finishing at time tfin where tspan=[t0 t1 ... tfin].
The method will also work well for stiff sets of ODEs.
See pendrun.m, penddae.m & pendg.m for a pendulum example.
See dae4.m and dae4o.m for higher order accurate versions.
Tony Roberts (2020). Differential Algebraic Equation Solvers (https://www.mathworks.com/matlabcentral/fileexchange/28-differential-algebraic-equation-solvers), MATLAB Central File Exchange. Retrieved .
I need in my research the DAE model to apply in my power system test
thank`s for you
Let p=dy/dx. Consider a single equation f(x,y,p)=0 (i.e. y=scalar) . Its general algebraic form (with respect to p) is
c(x,y)= row-vector of coefficients (1 by N>2, N being polynomial order), possibly functions of x,y.
P=p.^(N-1:-1:0)' = column of derivative powers
The equation c*P=0 solved for p has N-1 (more than one) roots.
The question: which of these roots will be selected and what are selection criteria?
I need this file
Please send for me
Thanks for help me
But if you can tell us the theory of the solver?