steadycos - Finds an equilibrium state of a general dynamical system described by a scicos diagram
This function finds the steady state for a given system described by a Scicos diagram. The diagram consists in general of a Super block with input and output port blocks. The steady state concern only the continuous-time dynamics.
[X,U,Y,XP]=steadycos(scs_m,X,U,Y,Indx,Indu,Indy [,Indxp [,param ] ])
- scs_m :
a Scicos data structure
- X :
column vector. Continuous state. Can be set to [] if zero.
- U :
column vector. Input. Can be set to [] if zero.
- Y :
column vector. Output. Can be set to [] if zero.
- Indx :
index of entries of X that are not fixed. If all can vary, set to 1:$
- Indu :
index of entries of U that are not fixed. If all can vary, set to 1:$
- Indy :
index of entries of Y that are not fixed. If all can vary, set to 1:$
- Indxp :
index of entries of XP (derivative of x) that need not be zero. If all can vary, set to 1:$. Default [].
- param :
list with two elements (default list(1.d-6,0)). param(1): scalar. Perturbation level for linearization; the following variation is used del([x;u])_i = param(1)+param(1)*1d-4*abs([x;u])_i. param(2): scalar. Time t.
- X :
steady state X
- U :
stationary input U
- Y :
output corresponding to steady state found
- XP :
derivative of the state corresponding to steady state found
Ramine Nikoukhah INRIA