scicos_simulate

Arguments

scs_m: A diagram data structure (see scs_m structure).

Info: A list. It must be set to list() at the first call, then use output Info as input Info for the next calls. Info contains compilation and simulation information and is used to avoid recompilation when not needed.

ContextValues: A Scilab struct containing values of symbolic variables used in the context and xcos blocks.

flag: A string. If it equals 'nw' (no window), then blocks using graphical windows are not executed. Note that the list of such blocks must be updated as new blocks are added.

Description

This function is used to simulate xcos diagrams in batch mode. It requires the scs_m structure which can be obtained by loading in Scilab the .zcos file (see importXcosDiagram ).

Note that before being able to simulate you should first load the block library using loadXcosLibs().

The ContextValues may be used to change the main parameters value set in the main diagram context. example: if the variable A is set to 1 in the main context of the diagram. One can change the A value for a scicos_simulate simulation by setting

ContextValues.A=2

It is also possible to use variables defined inside Scilab directly without using the ContextValues argument, but for such a use the context definition must allow this: example, if one wants to allow simulation use the A Scilab variable value for the parameter A the diagram context definition should contain

if ~exists('A') then  A=1,end

File content

• SCI/modules/scicos/macros/scicos_auto/scicos_simulate.sci

Examples

The xcos diagram in SCI/modules/xcos/demos/batch_simulation.zcos.

// load the blocks library and the simulation engine
loadXcosLibs(); loadScicos();

importXcosDiagram("SCI/modules/xcos/demos/batch_simulation.zcos")

typeof(scs_m) //The diagram data structure

//This diagram uses 3 context variables :
//  Amplitude : the sin function amplitude
//  Pulsation : the sin function pulsation
//  Tf        : the final simulation time
scs_m.props.context; //the embedded definition

//first batch simulation with the parameters embedded in the diagram
scicos_simulate(scs_m);
// Change the final time value
Context.Tf=10;
scicos_simulate(scs_m,Context);
// without display
Context.Tf=10;
Context.Pulsation=9;
scicos_simulate(scs_m,list(),Context,'nw');
//get the variable created by the "from workspace block"
counter

See also

• scs_m structure — Define a scs_m structure
• importXcosDiagram — Import a Xcos diagram on Scilab
• loadXcosLibs — Loads all native Xcos blocks interfaces functions
• scicosim: xcos batch simulation function — xcos (batch) simulation function
• xcos: Block diagram editor and GUI for the hybrid simulator — Block diagram editor and GUI for the hybrid simulator
• steadycos: Finds an equilibrium state of a Xcos diagram — Finds an equilibrium state of a general dynamical system described by a xcos diagram
• lincos: Constructs by linearization a linear state-space model from a Xcos diagram — Constructs by linearization a linear state-space model from a general dynamical system described by a Xcos diagram