OPEN STANDARD SIGNAL CONDITIONING IN HIL SIMULATION · Analog, Digital, etc. Signals adjusted to...
Transcript of OPEN STANDARD SIGNAL CONDITIONING IN HIL SIMULATION · Analog, Digital, etc. Signals adjusted to...
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Anders Tunströmer| © Saab
Simulator Hardware Department
OPEN STANDARD SIGNAL CONDITIONING IN HIL SIMULATION
Anders Tunströ[email protected]
COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIED
Anders Tunströmer| © Saab
SAAB AERONAUTICS
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~3000 employeesGripen Fighter
T-X Trainer(Coorporation with Boeing)
©2017THE BOEING COMPANY © Saab AB
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SIMULATORS USED IN ALL LIFE-CYCLE PHASES
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WHY IS A DEVELOPMENT SIMULATOR NEEDED?
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• Verify Air-worthiness before flight
• Perform tests that are too dangerous to perform flying.
‒ E.g. Inserting failures in the system.
• Capability and availability.
‒ Enormous amount of verification and validation can be performed in the simulators
• Readiness
‒ Tests can be performed with partial system functionality and partial access to real system equipment.
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VERIFICATION COST
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SYSTEM RIG
Pag
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DUTDUT
ACSim simulationModels of physical
systems
Operator & Pilot
stationInterface to
Operator and Pilot CockpitDisplays
HOTAS
Controls
DUT
Adapter
UnitI/O&Power
Adapter
UnitI/O&Power
Aircraft
Equipment(Device
Under Test)
Aircraft
Equipment(Device
Under Test)
Aircraft
Equipment(Device
Under Test)
Aircraft
Equipment(Device
Under Test)
Aircraft
Equipment(Device
Under Test)
Adapter
UnitI/O&Power
Adapter
UnitI/O&Power
Adapter
UnitI/O&Power
Adapter
UnitI/O&Power
Purpose: Verification of Avionics System integration and functionality.
Flight Safety Test before A/C ground and flight tests
Structure: Complete (or near complete) equipment suite of equipment (avionics), aircraft specific integration (cabling) and simulated aircraft system
A/C specific cabling © Saab AB
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AIRCRAFT VS. SIMULATOR
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Aircraft Simulator
Requirements defined by aircraft Requirements defined by aircraft and additional simulator requirements
Adapter
Unit #1
Eq #1 Eq #3
Eq #2
Adapter
Unit #2
Eq #1
Eq #2
Simulation
Computers
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WHAT IS AN ADAPTER UNIT (AU)
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• All things needed to connect an ECU to the simulator.
• ECU = LRU = DUT = …
• 19” rack mounted.
• Including:
‒ I/O-system
‒ Cables
‒ Patch panels
‒ Power supply and monitoring
‒ Tray for ECU
‒ Cooling installation
© Saab AB
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SIGNAL FROM MODEL TO ECU EXAMPLE
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Ethernet
Analog,
Digital, etc.
Signals
adjusted to
match ECU
interfaceSW model
simulationECU
SLSC-chassis
(No real time
support)
National
Instruments
HW (cRIO, PXI)
(Real-time
support)
©
Natio
nal In
stru
ments
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CUSTOM
Today’s Hardware in the Loop System
ECU Connectivity Switches, Loads, and
Signal Conditioning
RT Processing
and DAQ
COTS
Future Hardware in the Loop System
ECU Connectivity Switches, Loads, and
Signal Conditioning
RT Processing
and DAQ
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HIL SIMULATION CHALLANGE
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All ECUs (Aircraft units) have their specific need of stimulation.
Time plans.
Long life cycles (>25years).
Government regulations.
Documentation and traceability.
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B787
Next MilitaryVehicle
Unaffordable!
F-35~9.5 Million SLOC~17 yrs. Start->EISGAO-12-437 page 18 6/2012
F/A-18
F-22
F-16F-14
B-2
A-10
THE UNAFFORDABLE TREND FOR AIRCRAFT SYSTEMS COMPLEXITY AND COST OF DEVELOPMENT
Time/Cost
Complexity/SLOC
S/W Integration Dominant
H/WDominant
B737
B777
A300/B747
A320
A340
A380
NextMilitary VehiclePossible!
B787~10 Million SLOC~7 yrs. start->EISBoeing quoted in NYC Aviation, 9/28/2011
SLOC = Source lines of code
EIS = Entry Into Service
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HISTORIC HIL SOLUTION STRATEGY
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Everything was custom made in-house architecture.
Built from low-level components.
Vague working processes.
Every HIL simulation was a new design.
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CURRENT HIL SOLUTION STRATEGY
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Apply to Open Standards that enable use of commercial solutions (COTS)
Open standards and commercial solutions enables us focus on core competencies and buy products and general competencies.
Efficient working processes necessary.
Product line approach - Design once and fix once
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ADVANTAGES OF OPEN STANDARDS AND COMMERCIAL SOLUTIONS
• Not limited to specific manufacturers.
• Available to buy on the market.
• Short lead times.
• Specifications are ready and written.
• Update and obsolescence are handle by someone else.
• Training and education available from 3rd party
• Trained consultants available
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AVAILABLE COMMERCIAL SOLUTIONS
• Cables/Connectors
• 1553 Bus equipment
• Hardware for I/O-system
• Signal conditioning (For commonly used signal types)
• RF-articles
• Power supplies
• Synchronization systems
• Rack/Cabinet and accessories
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WHERE COMMERCIAL SOLUTIONS CAN’T BE USED
• Cables to/from ECU (exceptions occur)
• ECU Tray
• Patch panels
• I/O-system software
• Equipment to puzzle all COTS together
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SLSC FROM NATIONAL INSTRUMENTS
• 5U (222mm) height and 19” rack mounting.
• 12 slots for modules
• Modules for signal conditioning, loads, etc.
• Cooling air inlet below the modules.
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Fan
Vent
½ U
½ U
4 U
Vent
© National Instruments
© National Instruments
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SLSC OVERVIEW
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NI PXI/CompactRIO
Pa
tch
panel
To ECUTo Measurement
Hardware
© National Instruments
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SLSC SYSTEM INCLUDES
Only from National Instruments:
• cRIO/PXI for real-time simulation
• SLSC Chassis
Open standard parts: (from National Instruments, 3rd party or custom solution)
• Cables to cRIO/PXI system
• Cables to Patch panel
• RTIs
• Modules
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© N
atio
nal In
stru
ments
© Saab AB
© National Instruments
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SLSC MDK DEFINES THE SYSTEM
• MDK = Module development kit Instructions, guidelines and rules for modules and RTIs.
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© National Instruments
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OPPORTUNITIES USING COMMERCIAL SOLUTIONS
• With the open standard modules and accesories pops upfrom various companies.
• Develop your own module(s), RTI(s), cables, etc.
• If you find a new need maybe somebody already has the solution or maybe want to solve your issue and sell it on the whole market.
• Mix as you like with equipment from different vendors.
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SLSC SYSTEM IN SAAB SIMULATOR
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© Saab AB
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PARTNERS
• In this case a development partner.
• When commercial solutions and open standards areused the opportunity to use partners increases rapidly.
• Use your established partner or find a new expert in a specific area.
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EXAMPLE: PROBLEM – LIMITATION - SOLUTION
• Problem: Need of reading VDT sensors
• Limitation: Time and personnel
• Solution: Use the SLSC open standard concept and a partner
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=!?? +
Partner
&
© Saab AB
©
Natio
nal In
stru
ments
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EXAMPLE: THE SPECIFICATION
• With only 19 requirements, one block diagram and onegraph our partner managed to design a module that fit ourneeds.
• The SLSC MDK defines the base of the modules.
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ADVANTAGES TO USE ESTABLISHED PARTNER
• Located nearby, meetings face-by-face is easy to manage.
• Short delivery time.
• Working process is established and partner know yourneeds.
• Contracts and agreements signed already.
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THE FUTURE FOR HIL SIMULATION
• Commercial solutions
• Open standards
• Design once
• Optimized working processes
• Aerospace and Automotive cooperation
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Anders Tunströ[email protected]