Transcript PG AutomotiveApplications

Automotive Applications
Paul Goossens
Director Applications Engineering
[email protected]
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Automotive Applications
POWERTRAIN
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Powertrain: Engine, Transmission, Drivetrain
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Powertrain: Mean-value Engine
Controller
Throttle
Inlet
Manifold
Engine
Power
External
Load (dyno)
Speed, Torque
Energy
Consumption
Standard
Equations
(Maple Custom
Components)
© Maplesoft, a division of Waterloo Maple Inc. 2010.
© Maplesoft, a division of Waterloo Maple Inc. 2010.
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Engine Startup with Battery
Alternator/Charge Control
Battery
Heat Dissipation
Starter Sequence
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Mechanical Load
Automotive Applications
STEERING
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Steering Mechanism
© Maplesoft, a division of Waterloo Maple Inc. 2010.
NVH: Power Steering with Electrical Servo
© Maplesoft, a division of Waterloo Maple Inc. 2010.
NVH: Steering Vibration Analysis
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Automotive Applications
ELECTRIC VEHICLES
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Battery Model
Thermal Efficiency
(lookup)
Energy Loss
(thermal)
State of Charge with
low-charge voltage
degradation (lookup)
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Charge Saturation
(lookup)
Simulation Results
Battery Current
State of Charge
Battery Voltage
Battery Temperature
Mechanical Load: Speed
Mechanical Load: Torque
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Battery Model (Version 2)
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Battery-Electric Vehicle
•MapleSim realization of battery electric vehicle
•Powered by a lead-acid-battery
© Maplesoft, a division of Waterloo Maple Inc. 2010.
NSERC/Toyota/Maplesoft Industrial Research
Chair in Mathematics-Based Modelling and Design
16
Chen and Rincón-Mora battery

Electric circuit battery model
© Maplesoft, a division of Waterloo Maple Inc. 2010.
NSERC/Toyota/Maplesoft Industrial Research
Chair in Mathematics-Based Modelling and Design
9
Chen and Rincón-Mora battery

Comparison with actual battery discharge
© Maplesoft, a division of Waterloo Maple Inc. 2010.
NSERC/Toyota/Maplesoft Industrial Research
Chair in Mathematics-Based Modelling and Design
10
Hybrid-Electric Vehicle
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Hydraulics: Pressure Regulator
Pressure Regulator
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Automotive Applications
VEHICLE DYNAMICS
© Maplesoft, a division of Waterloo Maple Inc. 2010.
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Full-Chassis Model
Tire Model
•Fiala
•Calspan
•Pacejka
•User-defined
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Rider Model with Restraints
© Maplesoft, a division of Waterloo Maple Inc. 2010.
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Automotive Applications
HARDWARE-IN-THE-LOOP TESTING
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Control systems design process
Plant
modeling
HIL test
Controller
design
Reduce plant modeling
time from months to days
Fastest plant models for
HIL testing (10x)
Target
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Faster real-time simulation
•
•
•
•
Model optimization and simplification
Unique multibody model formulation
Optimized code generation
More systems become feasible for RT simulation
SimMechanics
(ms)
MapleSim 
S-function 
Simulink (ms)
Speed
advantage
Double Pendulum
137
14
9.9x
Four Bar Linkage
288
70
4.1x
Stewart Platform
710
74
9.6x
Simulation cycle time = 10ms
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Real-Time Performance…
63ms Cycle Time
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…with no loss of Fidelity
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Example: Stability Control Test System
Host PC with…
•MapleSim
•Full-chassis model
•Connectivity Toolbox
•LabVIEW
•Simulation Module
Control Output Display
PXI Chassis
•LabVIEW/RT
Controller Module
Digital Out
CAN bus Interface
© Maplesoft, a division of Waterloo Maple Inc. 2010.
MotoTron
Stability
Controller
Vehicle Model
Tire Model
•Fiala
•Calspan
•Pacejka
•User-defined
© Maplesoft, a division of Waterloo Maple Inc. 2010.
Model Code Generation to LabVIEW
Code Generation of Model for
LabVIEW
Bicycle Model
Vehicle Model loaded on to
LabVIEW/Real-Time
Controller loaded on to
Prototype Controller
© Maplesoft, a division of Waterloo Maple Inc. 2010.
LabVIEW Operator Interface
Without Stability Controller
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With Stability Controller
© Maplesoft, a division of Waterloo Maple Inc. 2010.