Determining the Limit Performance of a GP2 Race Car: from Reality to Multibody and Analytical Simulation - Part II.

Transcription

1 Determining the Limit Performance of a GP2 Race Car: from Reality to Multibody and Analytical Simulation - Part II Giuseppe Callea BhaiTech Technology BhaiTech Technology 1

2 Company Presentation Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I Determining the Limit Performance of a GP2 Race Car Part II Conclusions Latest Projects & News Partners BhaiTech Technology 2

3 Company Presentation BhaiTech is a R&D service provider to the Automotive Industry. Company s core business is represented by the Development of R&D Projects for Car Manufacturers and Professional Racing Teams carried out in our Advanced Vehicle Science Centre. BhaiTech Technology 3

4 Company Presentation BhaiTech Services BhaiTech Products Chassis Development Data Management Software Vehicle Dynamics Simulation Vehicle Dynamics Simulation Software Control Systems & ADAS Development Use of Interactive Virtual Reality in Car R&D BhaiTech Technology 4

5 Company Presentation Workshop Overview BhaiTech Technology 5

6 Company Presentation Workshop: Testing & Measurement BhaiTech Technology 6

7 Company Presentation Workshop: Measurement Equipment & CNC Machinery BhaiTech Technology 7

8 Company Presentation BhaiTech Truck: Prototype Testing on Track/Proving Ground BhaiTech Technology 8

9 Company Presentation Offices BhaiTech Technology 9

10 Company Presentation Use of Interactive Virtual Reality in Car R&D Simulator Overview Real GP2 Cockpit Projectors Actuator Testing Control Room Hardware In the Loop BhaiTech Technology 10

11 Company Presentation Use of Interactive Virtual Reality in Car R&D BhaiTech Technology 11

12 Determining the Limit Performance of a GP2 Race Car Part II Determining the Limit Performance of a GP2 Race Car: from Reality to Multibody and Analytical Simulation BhaiTech Technology 12

13 Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I Vehicle Model Characteristics o o Adams/Car: Multibody Vehicle Model BT Modeller: Lumped Parameter Vehicle Model developed in MATLAB/Simulink Validation Strategy for Vehicle Models Vehicle Definition: Use of Same Data for Vehicle Subsystems Simulation Input: Driver Controls from Experimental Data of a lap at Barcelona BhaiTech Technology 13

14 Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I BT Modeller & Adams/Car to run using real driver inputs (open loop mode) Experimental Data from a lap at Barcelona track Adams/Car BT Modeller BhaiTech Technology 14

15 Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I BT Modeller & Adams/Car vs. Experimental Data: Vertical Dynamics Experimental Data from a lap at Barcelona track Adams/Car BT Modeller BhaiTech Technology 15

16 Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I BT Modeller & Adams/Car vs. Experimental Data: Vertical Dynamics Rear Left Damper Length [mm] Rear Left Normal Tyre Load [kg] Experimental Data from a lap at Barcelona track Adams/Car BT Modeller November , Professional MotorSport World Expo 2015 Giuseppe Callea BhaiTech Technology 16

17 Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I BT Modeller & Adams/Car vs. Experimental Data: XY Plane Dynamics Experimental Data from a lap at Barcelona track Adams/Car BT Modeller BhaiTech Technology 17

18 Brief Recall to Determining the Limit Performance of a GP2 Race Car Part I BT Modeller & Adams/Car vs. Experimental Data: XY Plane Dynamics Longitudinal Vehicle Velocity [kph] Longitudinal Vehicle CofG [g] Lateral Vehicle CofG [g] Experimental Data from a lap at Barcelona track Adams/Car BT Modeller November , Professional MotorSport World Expo 2015 Giuseppe Callea BhaiTech Technology 18

19 Vehicle Model Validation BT Modeller & Adams/Car vs. Experimental Data: XY Plane Dynamics Rear Left Tyre Slip Angle [deg] Rear Left Tyre Lateral Force [kg] Experimental Data from a lap at Barcelona track Adams/Car BT Modeller November , Professional MotorSport World Expo 2015 Giuseppe Callea BhaiTech Technology 19

20 Determining the Limit Performance of a GP2 Race Car Part II Race Car Control & Stability Analysis Step Steer Manuever Constant Radius Corner Entry Control & Stability Mid Corner Control & Stability BhaiTech Technology 20

21 Determining the Limit Performance of a GP2 Race Car Part II Indeces adopted to evaluate Race Car Performance and Control & Stability Performance - Vehicle Accelerations, Vehicle Speed Control and Stability - Car Distance from Racing Line (Optimum Trajectory) - Slip Angle Overshoot after Steering Input - Slip Angle Settling Time BhaiTech Technology 21

22 Race Car Control Race Car Control Capability to Approximate Closely the Racing Line Curve 7 BhaiTech Technology 22

23 Race Car Stability Race Car Stability - Slip Angle Overshoot after Steering Input - Slip Angle Settling Time - Slip Angle Power Spectral Analysis BhaiTech Technology 23

24 Car Setup Changes Aerodynamic Setup Changes to be Analyzed SETUP Aero Configuration Front Flap Angle Front Flap Gurney Front Upper Flap Rear Wing Angle Rear Wing Gurney 1 HDF_Biplane HDF_Biplane HDF_Biplane Front Flap Slope Change Rear Wing Angle Change BhaiTech Technology 24

25 Car Setup Changes Effects of Aerodynamic Setup 220 kph SETUP Aero Configuration Aero Balance F Total DownForce Drag Efficiency 1 HDF_Biplane 2 HDF_Biplane 39, ,24 39, ,25 3 HDF_Biplane 39, ,25 Similar Aero Balance & Efficiency Levels Loss in Downforce up to 30 kg Reduction in Drag of 10 kg BhaiTech Technology 25

26 Step Steer and Constant Radius Maneuvers Transient Step Steer Manuever from the Real World Real Driver Inputs - Barcelona Curve 7 Car Corner Entry: 242 kph Driver input T0 = 42.9 s T1 = 43.3 s T2 = 44.3 s T3 = 44.9 s T [s] Gear [-] Pedal [%] Brake [Bar] Steer [deg] BhaiTech Technology 26

27 Step Steer and Constant Radius Maneuvers Simulated Transient Step Steer + Constant Radius Manuever Simulated Driver Inputs - Barcelona Curve 7 Car Corner Entry: 245 kph Driver input T0 = 0 s T1 = 5 s T2=5.4 T3 = 6.4 s T4 =7s T5 = 10 s T [s] Gear [-] Pedal [%] Brake [Bar] Steer [deg] BhaiTech Technology 27

28 Simulated Transient Step Steer and Constant Radius Maneuver BT Modeller: Simulated Transient Step Steer + Constant Radius Manuever Driver Inputs Gear [-] Gear Pedal [%] Pedal Brake Brake [Bar] Steer Steer [deg] BhaiTech Technology 28

29 Simulated Transient Step Steer and Constant Radius Maneuver BT Modeller: Simulated Transient Step Steer + Constant Radius Manuever Vehicle Performance Longitudinal Velocity [kph] Longitudinal Acceleration [g] Lateral Acceleration [g] BhaiTech Technology 29

30 Simulated Transient Step Steer and Constant Radius Maneuver BT Modeller: Simulated Transient Step Steer + Constant Radius Manuever Vehicle Control: Trajectory Car Trajectory BhaiTech Technology 30

31 Simulated Transient Step Steer and Constant Radius Maneuver BT Modeller: Simulated Transient Step Steer + Constant Radius Manuever Vehicle Control: Trajectory Car Trajectory Zoom Corner Apex Corner Apex Relative Lateral Distance: Setup 1 - Setup [m] Setup 1 - Setup [m] BhaiTech Technology 31

32 Simulated Transient Step Steer and Constant Radius Maneuver BT Modeller: Simulated Transient Step Steer + Constant Radius Manuever Vehicle Stability Slip Angle [deg] Aerodynamic Balance [%] BhaiTech Technology 32

33 Determining the Limit Performance of a GP2 Race Car Conclusions o A method to correlate a lumped parameter vehicle model for real time application with an Adams/Car model and experimental data has been defined o Results from the multibody approach and the analytical one show a good level of correlation between each other and with experimenatal data as well o A method is now available to evaluate the accuracy and robustness of the real time and multibody models when experimental data is not available BhaiTech Technology 33

34 Company News Latest Projects Successful Completion of R&D project for Jaguar Land Rover Research Division! Latest News BhaiTech is testing the in-house developed control system for the driving simulator: vehicle model motion cueing algorithm low level hardware control BhaiTech Technology 34

35 Partners BhaiTech Technology 35

36 Thank you for your Attention! Contacts Giuseppe Callea Info Web BhaiTech Technology 36