Ctrl+K

sdtsys

sdtsys#

Purpose

Virtual testing from system models.

Description

This function organizes the main steps to generate virtual testing measurements from system models, inputs, outputs and acquisition settings.

CfgRange#

This command generated the Range structure which describes the 4 main steps to generate virtual tests. Each step corresponds to a configuration of Mesh, Model, Sys and Acq configurations given using the format Mesh:Model:Sys:Acq.

The list of all configurations can be found using command sdtsys CfgList.

The Range structure is then forwarded to fe_range Loop to execute the 4 main steps and finally generate the simulation.

Range=sdtsys('CfgRange','Beam20Cleft:Damp2:DFRF:BodeNoise');
fe_range('Loop',Range,struct('ifFail','error')); 
cf=sdth.urn('Dock.id.cf');ci=sdth.urn('Dock.id.ci');

Step#

Contains the code standard implementations of experiments handled by sdtm.range, see section 3.5. In particular

  • stepMesh deals with the MeshCfg steps : meshing, materials, boundary conditions, ...
  • stepSimu deals with the SimuCfg steps
  • stepRun deals with the RunCfg steps. Note that these can correspond to fe_caseg Change.

UrnSig signal generation nomenclature#

This command implements uniform nomenclature for signal generation. 

sdtsys('UrnSig')
% Ramp up, do 3 slow triangles then 3 fast. 
C1=sdtsys('UrnSig','dt48u:Cst(2):Tri(1,/60,1,k50):Tri(3,/60,12,k20):Tri(3,/10,12,k20)');
figure(11);plot(C1.X{1},C1.Y)
% Ramp up, 3 periods doing sequence of amplitude,freq, ramp, other sequence
C1=sdtsys('UrnSig','dt48u:Cst(2):Tri(1,/10,1,k10):Sin({.1,1,2},{1,10},TR12,k1):Tri(1,/10,1,k10):Sin({.1,1,2},{1,10},TR12,k1)');
figure(12);plot(C1.X{1},C1.Y)

%C1=sdtsys('UrnSig','dt100u:Sweep(20,200,20)');

Contents