steadycos

Scilab Function
fr - eng
steadycos - Finds an equilibrium state of a general dynamical system described by a scicos diagram

### Module

- Scicos

### Description

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.

### Calling Sequence

    [X,U,Y,XP]=steadycos(scs_m,X,U,Y,Indx,Indu,Indy [,Indxp [,param ] ])

### Parameters

- 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

### File content

- SCI/macros/auto/steadycos.sci [view code]

### See Also

- lincos - Constructs by linearization a linear state-space model from a general dynamical system described by a scicos diagram (Scilab Function)
- scicos_simulate - Function for running scicos simulation in batch mode (Scilab Function)
- scicos - Block diagram editor and GUI for the hybrid simulator (Scilab Function)

### Authors

Ramine Nikoukhah INRIA