Simulation for Vehicle System
Design
Petter Krus
Linköpings tekniska
högskola
Systems Engineering implies
•
•
•
•
•
Vertical Integration
Domain integration
Process integration
Collaborative methods
Software Integrated Concurrent
Engineering
Vertical integration
Systems
Systemsof
ofsystems
systems
System
Systemconfiguration
configuration
Subsystem
Subsystemdesign
design
Allows designers at
subsystem levels to have
an involvement at higher
levels of design
Systems engineer gets
more aware of
consequences of
requirements at lower
levels of design
Design process
Generating
Generating
requirement
requirement
and
anddesirables
desirables
specification
specification
Concept
Concept
generation
generation
Concept
Concept
optimisation
optimisation
and
andselection
selection
Meta-modelling
Meta-modellingand
and
post-optimal
post-optimal
analysis
analysis
Concept optimisation and selection
Parameter
optimisation
System
specification
Evaluation
(simulation)
Usefullness z
The usefullness of simulation
Complexity jump
Model completness
z
Simulation is going through a rapid transition from
simple problem dependent models, to highly complex,
multi domain, problem independent models
Complete system
modelling/development
Subsystem/
design team
System / system
integration group
Subsystem/
design team
Subsystem/
design team
Subsystem/
design team
Subsystem
interface
Subsystem/
design team
D
at
ae
xc
ha
ng
e
Principle of distributed modelling and simulation
Component
model
Solver
Component
model
Component
model
Solver
Solver
Aircraft system optimisation
Optimised result
Ex:Optimering för maximala prestanda
Ex:Optimering för maximala prestanda
Co-simulation of wheel loader Jonas
Larsson
HOPSAN
model
Adams
model
SIMULIN
K model
Modelica
XML for model definition
Modelith
XML-schema
Component
generator
XMLdokument
Component
editor
Implicit model
Symbolic
manipulation
Explicit
model
Geometrical
model etc.
Other XML
C++
XSLT
Java
HOPSAN
Matlab
XML-based information management for
distributed simulation
Interface to data
Design
Design
data
data
(XML)
(XML)
Process
Process
data
data
(XML)
(XML)
Project with GeorgiaTech: Software environment for
sizing and synthesis of future aircraft systems
Process
Process
driver
driver
Computational
Computational
resource
resource
(Web
(Web service)
service)
Computational
Computational
resource
resource
(Web
(Web service)
service)
Interface to service provider
Design tools
Spreadsheet
DOE, Optimizer,
etc.
User interface
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•
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Representation of design data in a general, toolindependent format.
Enable support for probabilistic analysis.
Creation of flexible interface between data and
applications and enable distributed simulation.
Formalize simulation methods and implement an
automatic process driver.