Undergrad Acceleration on an electric unicycle, how much does the rider have to lean?

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SUMMARY

The discussion centers on the physics of acceleration on electric unicycles (EUCs), particularly how rider lean affects balance and torque. Key calculations reveal that for a rider weighing 200 lbs on a 100 lb EUC, a 1/2 g acceleration requires the rider to lean forward to generate sufficient torque. The torque balance is crucial, with gravity and acceleration forces needing to be equalized to maintain stability. The conversation also highlights the importance of understanding dynamics, particularly in relation to rider positioning and the mechanics of EUC operation.

PREREQUISITES
  • Understanding of Newton's laws of motion, particularly torque and balance.
  • Familiarity with electric unicycle mechanics and dynamics.
  • Basic knowledge of trigonometry for calculating angles and distances.
  • Experience with acceleration metrics, such as g-forces and torque calculations.
NEXT STEPS
  • Research the physics of torque and balance in inverted pendulum systems.
  • Learn about the dynamics of electric unicycles and their self-balancing mechanisms.
  • Explore the impact of rider positioning on acceleration and deceleration in EUCs.
  • Investigate the use of accelerometers and gyros in maintaining balance on electric vehicles.
USEFUL FOR

Engineers, electric unicycle enthusiasts, and physics students interested in the mechanics of balance and acceleration in dynamic systems.

  • #31
Baluncore said:
It is the deflection angle from the vertical, of the line from the contact patch to the centre of mass, that decides the acceleration necessary to maintain or reduce that angle of deflection.
And adding weight to the upper body, that is strongly leaned forward (see video), will move the centre of mass forward, increasing that angle of deflection, and thus the necessary acceleration. The only problem is maintaining body tension under additional load, hence the railing for support.
Baluncore said:
Increasing the mass will increase the power required from the motors to stabilise the situation.
I was replying specifically to the scenario, where there is still more power available:
rcgldr said:
For the P6, the limit is the amount of torque the rider can exert onto the EUC.
 

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