CARMAKER IN MOTORSPORT Karlsruhe Fabien CHENIN 24/09/2014 Fabien GEFFROY Karlsruhe, 24/09/2014
Contents Introduction Why CarMaker ? • Lead the team forward • Personalization Modelling • Car Modeling • Limited Slip Differential • Tire • Suspension • Aerodynamics • Correlation • Track Modelling • Electronics • Driver Correlation • Vehicle Correlation Utilization • Pure Performance Criteria • Driving Criteria Innovation 01 Conclusion
Team • Founded in December 2011 by Sébastien Loeb & Dominique HEINTZ • Composed of fifteen professionals • Involved in various competitions: Introduction 24 Hours Of Le Mans Why CarMaker ? European Le Mans Series Modelling GT Championship Utilization Innovation Porsche SuperCup Conclusion • Vehicle Dynamics expertise 02
Lead the team forward • Understand interaction between all the element of a car • Reduce the spectrum of settings during real tests Introduction Why CarMaker Steady state Dynamic Modelling simulation simulation Utilization • Simplified Models • Speed-dependent model Innovation • Implementation • Every physical duration reduced phenomenon modeled Conclusion • Adaptive driver model 03
Personalization • Motorsport and automotive category require specific needs : • Aerodynamics in Motorsport • Comfort in Industry Introduction • Adapt IPG CarMaker to these needs: Why CarMaker Modelling Adaptation Open Integration Utilization Platform Innovation Innovation Conclusion 04
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics Introduction Tires Aerodynamic Why CarMaker Suspension kinematic & compliance Modelling Engine & Chassis Utilization Transmission Innovation 3 rd Spring Conclusion Limited slip differential 05
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics Introduction Why CarMaker Modelling Utilization Innovation Limited Slip Conclusion SLR IPG Differential Characteristic Viscoélastique with Free Driveline Curves Preload 06
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics Introduction Why CarMaker Flat track measurement Modelling Tire modelling Utilization Innovation Skid Trailer Conclusion 07
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics • CPI Model Introduction Why CarMaker Forces at Modelling Contact Wheel Input patch To Wheel Utilization Center By Load CarMaker Inclination Innovation Velocity Tire Rolling Conclusion Radius 08
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics • STI Model Introduction Forces / Torque Why CarMaker at Contact patch Modelling To Wheel Tire Contact Patch Utilization Center By Rolling Calculation Radius SLR Innovation Tire Conclusion Loaded Radius 09
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics Introduction Why CarMaker 3rd Spring Modelling Average Spring Deflection Utilization Innovation Static Gap Conclusion Ride Height Control 10
Car Modelling Correlation Limited Slip Differential Tire Suspension Aerodynamics Introduction Aerodynamic Downforce Why CarMaker Modelling To Wheel Aerodynamic Utilization Center By Drag SLR Innovation Aerodynamic Balance Conclusion • Correction of tire crushing • Use of IPG Body Sensor to modelize ride heigth behaviour • Application of aerodynamic drag & downforce (CLA and CDA) 11
Car Modelling Correlation Track Modelling Electronics Driver Correlation Vehicle Correlation • Track Modelling Introduction Why CarMaker Modelling To Wheel Utilization Center By SLR Innovation Conclusion • Development of tools for modeling track • GPS measurements coupled with an inertial measurement unit 12 • Use of the Kalman filter to reduce the measurement noise
Car Modelling Correlation Track Modelling Electronics river Correlation Vehicle Correlation • Beams development Introduction • Autonomous assembly implantable on any vehicle • Additional Systems using this architecture in the vehicle Why CarMaker • Implementation of specific sensors Modelling • Standard sensors: stress, temperature • To Wheel Specific sensors: slip angle, tire pressure sensors Utilization Center By SLR Innovation Conclusion 13
Car Modelling Correlation Track Modelling Electronics Driver Correlation hicle Correlation Introduction Why CarMaker Modelling To Wheel Utilization Center By SLR Innovation Conclusion 14
Car Modelling Correlation Track Modelling Electronics Driver Correlation Vehicle Correlation Introduction Why CarMaker Modelling To Wheel Utilization Center By SLR Innovation Conclusion 15
Car Modelling Correlation Track Modelling Electronics Driver Correlation Vehicle Correlation Introduction Why CarMaker Modelling To Wheel VIDEO Utilization Center By SLR Innovation Conclusion 16
Pure Performance Criteria Driving Criteria Introduction Why CarMaker Modelling To Wheel Utilization Center By SLR Innovation Conclusion 17
Pure Performance Criteria Driving Criteria Introduction Why CarMaker Modelling To Wheel Utilization Center By SLR Innovation Conclusion 18
Formula E Vehicle dynamics simulation Introduction Why CarMaker Modelling To Wheel Complete car Utilization Center By optimisation SLR Innovation Conclusion Electric energy management 19
Introduction Why CarMaker Complete Steady state Dynamic vehicle Modelling dynamics simulation simulation expertise To Wheel Utilization Center By SLR Adaptation Innovation Powerful tool Innovation Conclusion 20
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