MSC Software Overview of Msc, easy5 MSC.EASY5 Analysis Options Types of analyses Steady state Find the values the plant would settle out to after an initial transient Simulation- time response How does the plant respond to a command or a disturbance? Model linearization Determine the stability of the system For control system design Also for understanding system Frequency response between any two points in model Matrix Algebra Tool Controls design Data analysis before or after other analyses Root locus, stability margins, eigenvalue sensitivity, power spectral density Use MSC EASY5 plotter to view results EAS103 Fluid Power Systems Advanced Class-Chart 6
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 6 MSC.EASY5 Overview of MSC.EASY5 TM Analysis Options • Types of analyses: – Steady state ▪ Find the values the plant would settle out to after an initial transient – Simulation – time response ▪ How does the plant respond to a command or a disturbance? – Model linearization ▪ Determine the stability of the system ▪ For control system design ▪ Also for understanding system – Frequency response between any two points in model – Matrix Algebra Tool ▪ Controls design ▪ Data analysis before or after other analyses – Root locus, stability margins, eigenvalue sensitivity, power spectral density • Use MSC.EASY5 plotter to view results
MSC Software MSC EASY5 Overview MSCEASY5 MSCEASY5 is Several Programs Programs you interact with MSC. EAS Y5 main window Where you construct your model schematic Also used for data entry and controlling analyses Plotter Visualize the results of the analyses Icon Editor Create custom graphic representations for your components Create component on-line documentation Matrix Algebra Tool(MAT) Programs that run in the background Model ge Generator Translates your schematic diagram into a FORTRANsubroutine of model equations called eQmo Analysis/simulation program Where the actual computation occurs Custom built for each model Library maintenance and model documentation programs EAS103 Fluid Power Systems Advanced Class-Chart 7
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 7 MSC.EASY5 MSC.EASY5 Overview TM MSC.EASY5 is Several Programs • Programs you interact with: – MSC.EASY5 main window ▪ Where you construct your model schematic ▪ Also used for data entry and controlling analyses – Plotter ▪ Visualize the results of the analyses – Icon Editor ▪ Create custom graphic representations for your components ▪ Create component on-line documentation – Matrix Algebra Tool (MAT) • Programs that run in the background – Model generator ▪ Translates your schematic diagram into a FORTRAN subroutine of model equations called EQMO – Analysis/simulation program ▪ Where the actual computation occurs ▪ Custom built for each model – Library maintenance and model documentation programs
MSC Software MSC, EASY5 Overview MSCEASY5 Levels of Dynamic System Simulation Fidelity Physical systems can be simulated at many levels of accuracy. the correct level depends on the purpose of the simulation 1. Atomic level -Uses equations from quantum mechanics Purpose: Molecular level effects Applications: nuclear physics 2. Microscopic ( or distributed parameter )-Uses partial differential equations Purpose: Study quantities that vary significantly over the points in a geometric object Applications: Detailed aerodynamics, impact analysis, component analysis 3. Macroscopic (or lumped parameter)-Uses ordinary differential equations Purpose: Study quantities that vary in time but can be averaged over spacial components Applications: Flight controls, hydraulic system analysis, electric power system control 4. Systems analysis Uses algebraic equations with time delays Purpose: Study quantities that effectively change value instantaneously at discrete instances of time Applications: Scheduling, communications Each level requires"orders of magnitude more effort than the next highest but provides more accurate results MSC EASY5 models dynamic systems at Level 3. EAS103 Fluid Power Systems Advanced Class-Chart 8
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 8 MSC.EASY5 MSC.EASY5 Overview TM Levels of Dynamic System Simulation Fidelity Physical systems can be simulated at many levels of accuracy. The correct level depends on the purpose of the simulation. 1. Atomic level - Uses equations from quantum mechanics Purpose: Molecular level effects. Applications: nuclear physics. 2. Microscopic (or distributed parameter) - Uses partial differential equations Purpose: Study quantities that vary significantly over the points in a geometric object. Applications: Detailed aerodynamics, impact analysis, component analysis. 3. Macroscopic (or lumped parameter) - Uses ordinary differential equations Purpose: Study quantities that vary in time but can be averaged over spacial components. Applications: Flight controls, hydraulic system analysis, electric power system control 4. Systems analysis - Uses algebraic equations with time delays Purpose: Study quantities that effectively change value instantaneously at discrete instances of time. Applications: Scheduling, communications. Each level requires “orders of magnitude more effort than the next highest but provides more accurate results. MSC.EASY5 models dynamic systems at Level 3
MSC Software MSCEASY5 Thermal/Hydraulics Modeling and Simulation With MSC,EASY5 A Brief Overview of the HC Library EAS103 Fluid Power Systems Advanced Class -Chart 9
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 9 MSC.EASY5TM Thermal/Hydraulics Modeling and Simulation With MSC.EASY5 A Brief Overview of the HC Library
MSC Software MSCEASY5 HC Library Overview Governing equations for fluid flow are represented as ordinary differential equations rather than partial differential equations Fluid flow is considered one-dimensional but this is still a relatively vigorous treatment that includes: Transient energy effects Fluid compressibility No flow or flow-reversal possibilities Recognizes onset of cavitation and can approximate cavitation effects EAS103 Fluid Power Systems Advanced Class-Chart 10
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 10 MSC.EASY5TM HC Library Overview • Governing equations for fluid flow are represented as ordinary differential equations rather than partial differential equations • Fluid flow is considered one-dimensional; but this is still a relatively vigorous treatment that includes: – Transient energy effects – Fluid compressibility – No flow or flow-reversal possibilities – Recognizes onset of cavitation and can approximate cavitation effects