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This tutorial demonstrates the use of the DPS Blockset for Simulink, a third-party software product from The MathWorks, to solve various model control problems. It also introduces the DPS Wizard, an automatized control loop design tool. Topics covered include control of temperature fields in metallurgy, interactive control via the internet, and more.
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Control of Distributed Parameter Systems an Engineering Approach – Tutorial DEMONSTRATIONS
Contentof the presentation • DPS Blockset for Simulink third-party software product of The MathWorks • Some model control problems • DPS Wizard – automatized control loop design tool • Control of temperature fields in metallurgy: shape casting and continuous casting of steel • Interactive Control – service forsupport the solution of control problems via the Internet
DPS Blockset library • Controlled Systems • SpaceSynthesis • Temporal Synthesis • DPS Source and DPS Display • DPS Examples • DPS Wizard
Some model controlproblems • 1D metal bar heating • 1D stringoscillation • 2D glassmelting • 3D semiproductheating
DPS Wizard • Automatizeddesign of controlloops • Presentation of default loops • Possibilitiesforwork with custom data
Control of temperature fields in metallurgyControl of secondary cooling in continuous casting of steel
1D temperaturefieldon little radius of the billetismodelled by FEM basednumerical model in ProCAST - Controlsynthesisissolved by software sensor
Control process in surrounding of chosen steady state regime
Control process at segmentation of nonlinear dynamics of transitionbetweendifferentsteady-states
Control of temperaturefieldof experimentalcasting mold Actuators: 5 heatingzones and 5 chills
Control synthesis is based on measured (selected) 5 values of temperature field in the 2D bottomregionof the active surfaceof the mold. However temperature field is modelled in points of numerical net
Steady-state profilesat a step change of the input on the 5thZONE of heating - on the 2D level andon the 3D levelalongwithtemperature responses on thermocouples- forcalculationspacecharacteristics of dynamics
Temporaldynamicalcharacteristics at samplingperiod 5 s and optimizeddistributed referencefor preheating
Controlledquantity in new steady-state withactuating quantities and quadratic norm of distributed parameter control deviation
Steady-state profilesat a step change of the input on the 4thCooling chill- on the 2D level and on the 3D levelalongwith temperature responses on thermocouples - forcalculationspacecharacteristics of dynamics
Temporal dynamical characteristics {Si(z)}i=1,5at samplingperiod 1 s and optimized distributed referenceforcooling
Control of coolingprocess- actuatingquantities are flowrates of waterthroughchills Temperature field in t = 180 s - controlaction in progress.
End of controlaction – casting ejection Measuredtemperatures in locations of thermocouples. Temperature field in t = 350 s - end of controlaction.
Interactive Control – service forsupport the solution of control problems via the Internet InteractiveControl via the Internetoffers forinterested partners the collaboration at thedesign distributed parameter control loops based on the supplied data and characteristics by DPS Blockset for Simulink – DPS WizardConsultations and access into the Cloud are providedby DPS Team - contact: gabriel.hulko@stuba.sk