[SciPy-user] Passing DAE mass matrix to integrate.odeint and/or ode
Scott Askey
scotta_2002 at yahoo.com
Wed Jan 28 12:28:57 EST 2009
I am trying to solve and semi-explicit DAE system (index 1).
For a simple pendulum I 5 equations, there 1st order sytem and the explicit contraint.
0=x1^2+x2^2
x1'=x3
x2'=x4
x3'=-lam*x1
x4'=-lam*x2-g
Can I do this with scipy or must I try pydstools? The problem is doable with matlab ode15s which is simlar to scipy.integrate.ode(f).\
set_integrator('vode', method='bdf', order=15)
http://www.scipy.org/NumPy_for_Matlab_Users
V/R
Scott
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