Project Squeaky Wheel Team Autobots Customer Continental Automotive David Agnew, Jeremy McClain Fall 2011

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  • Slide 1
  • Project Squeaky Wheel Team Autobots Customer Continental Automotive David Agnew, Jeremy McClain Fall 2011
  • Slide 2
  • Project Overview Steer-by-wire replaces the traditional steering system with an electronic one Motivation To remove the mechanical system from the vehicle, reducing power consumption To provide more responsive steering Car Design improvements A possible future with complete autonomy
  • Slide 3
  • Domain Research Steer-by-wire is a very new technology Most material available is from research projects Not used in personal transportation vehicles yet Primary use currently is in industrial equipment (forklifts, some agricultural vehicles)
  • Slide 4
  • Overview of Features Basic look at steer by wire control Simple control loop using PID to ensure proper control Requested Angle Current Wheel Angle PID Torque Request New Wheel Angle
  • Slide 5
  • Project Constraints The system is only active in the speed range of -10 to 20 miles per hour System must recalculate values every 500s The assisted torque is always within the range of +10 to -10 Nm.
  • Slide 6
  • Model-based View of System Contains the following diagrams Use Case Class Sequence State
  • Slide 7
  • Use Case Diagram
  • Slide 8
  • Class Diagram
  • Slide 9
  • Sequence Diagram
  • Slide 10
  • State Diagram
  • Slide 11
  • Prototype Overview
  • Slide 12
  • Demonstration Scenario 1 Speed: -5 mph Steering Wheel Adjustment : Left
  • Slide 13
  • Demonstration Scenario 2 Speed: 0 mph Steering Wheel Adjustment : Left
  • Slide 14
  • Demonstration Scenario 3 Speed: 20 mph Steering Wheel Adjustment : Right
  • Slide 15
  • Questions?