Analysis of driving tests data

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Analysis of driving tests data

• Vehicle motion

Jan Capek Jiri Sloup
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Source of data, data background

• ESV report describing the driving tests on lake
  Hemsjön, 1990
• Car D Volvo 744 Rear wheel driven
• 26 sessions

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Double lane change manouvre
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Computation of vehicle motions

• Measured data in textfiles
• 0.03 -0.200 0.123 30.84 1.523 17.4 -0.0
  1.0 -0.0
• 0.18 -0.298 -0.035 30.89 1.477 17.4 -0.0
  1.0 -0.0
• 0.48 -0.139 -0.010 31.31 1.510 17.4 -0.0
  1.0 0.0
• 0.18 -0.005 -0.085 31.43 1.456 16.2 -0.0
  1.0 0.0
• 0.18 0.032 0.137 31.94 1.347 10.0 -0.0
  1.0 -0.0
• 0.48 0.020 -0.089 32.28 -0.120 3.0 -0.0
  1.0 -0.0
• 0.03 0.142 -0.043 32.11 -0.579 0.1 -0.0
  1.0 0.0
• -0.12 -0.078 0.104 31.92 -0.054 0.0 -0.0
  1.0 0.0

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Finding of starting point
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Variables

• calculated by forward integration

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Trajectory
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Trajectory of the car
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Bicycle model
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Side slip angle loss of stability
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Side slip angle without loss of stability
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Forces and accel. in CG
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Side force
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TIRE CONFIGURATIONS

• Critical speed

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The influence of the tire configuration
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