Team Mejor Mobility

Wheels  3 Wheels  2 Front Driven Wheels  Smaller Caster Wheel Drags Behind  Large Front Wheels Centered on Chassis

Turning  Allows Turning About Point  No Hopping or Plowing  Can Be Oriented as Accurately as Compass Allows

Design Variables  Wheel Radius  Wheel Thickness  Width Between Wheels  Distance Between Front and Back Wheels  Motors/Gearing/Belts/Pulleys  Material  Caster Moment Arm

Analysis Tools  Mechanics  Dynamics  Newton’s Laws  Optimization  Modeling  Experimentation

State Variables  Speed  Cost  Weight  Power  Stability  Traction

Measures of Merit  Simplicity  Accuracy  Cost  Durability  Assembly Time  Number of Parts  Precision  Speed

Possible Problems  Shopping Cart Effect  Stopping or Coasting  Balancing Weight  Accurate Turning  Motor Synchronization