Self balancing bicycle prototype using flywheel(reaction wheel)

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SUMMARY

The discussion centers on a self-balancing bicycle prototype utilizing a flywheel for stabilization, developed by a level 4 mechatronics student. The student is facing challenges in calculating the torque for the flywheel motor using the formula T=J*alpha, where J represents moment of inertia and alpha denotes angular acceleration. Key specifications include a total prototype mass of 2.5 kg, a flywheel radius of 5 cm, and a flywheel mass of 0.5 kg. The student seeks guidance on selecting appropriate 12V DC motors for both the flywheel and driving mechanisms, as well as advice on flywheel specifications and the necessity of a gearbox with a suitable reduction ratio.

PREREQUISITES
  • Understanding of torque calculations in rotational dynamics
  • Familiarity with flywheel mechanics and specifications
  • Knowledge of DC motor selection criteria
  • Basic principles of gear reduction and its applications
NEXT STEPS
  • Research "Calculating moment of inertia for various shapes" to refine flywheel design
  • Learn about "Selecting DC motors based on torque and RPM requirements" for optimal performance
  • Investigate "Gearbox design and reduction ratios" to enhance motor efficiency
  • Explore "Angular acceleration and its impact on stability in self-balancing systems" for improved control
USEFUL FOR

Mechatronics students, robotics engineers, and hobbyists interested in self-balancing systems and flywheel applications will benefit from this discussion.

ykhoody
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Hello everybody,
Well I'm a level 4 mechatronics students from Mauritius and doing my project on a self balanced bicycle which uses a flywheel to achieve this.A better view of it can be seen on:

OR EVEN ON:
http://www.youtube.com/watch?v=0312BNqIBFI&feature=related
http://www.youtube.com/watch?v=AvGUuuq7DOE&feature=related

During the past 3 weeks,I've been struggling on calculation of torque(flywheel motor) and I'm stuck.
I have been using the formula T=J*alpha,
where J=moment of inertia and alpha=angular acceleration.

I have assumed overall mass of prototype to be around 2.5 kg,radius of flywheel=5 cm,mass of flywheel=0.5kg,radius of driving wheel=5 cm,max permissible tilting angle=30 degrees.

Could you please help me in selecting my 12V DC motors:flywheel motor(rpm,torque)
Driving motor(rpm,torque)
and flywheel specifications(radius and mass)
and finally if gear box(reduction gear) is needed,its ratio??
Thanking you all in advance.
Best regards
 
Last edited by a moderator:
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Your links don't work.
 



Can't find the other one
 
Last edited by a moderator:
sorry...do not know how it changes...maybe by default...need to remove url...just edited it..
 

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