Added: 2 years ago
From: aalmujah
Views: 1,921
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  • Dear sir, I am a Mechatronics student doing my final year project similar to that of yours. I was doing my calculation on torque of motors but I am stuck. I would be really grateful if you could kindly guide me in choosing the right motors and flywheel specifications.

    Awaiting positive reply and thanking you in advance.

    Best regards

    Yashveen Khoody

    Mauritius

  • @ykhoody We didn't really do "mathematical" work to decide on the specification of the motor and the reaction wheel. It was purely done empirically (trial and error in other words). But what really helped us is that in our robotics class, my design partner and I built what we called the "reaction beam", that project allowed us to study the feasibility of the project as well as the overall performance of the system. There is a video I posted on youtube, it's called "inverted reactive beam"

  • @aalmujah thank you a lot sir,but though it was by trial and error,you finally reach to some selection,which i am searching. Infact I need to import these parts and therefore, cannot go thru trial. I wolud be really grateful if you can give me information about

    flywheel-mass,radius

    motor-rpm,torque

    gear box and overall mass of prototype.

    Thanking you in advance,

    Best regards,

    Ykhoody

    (ykhoody2601@hotmail.com)

  • @ykhoody hmmm, I do not have the bike with me at the moment. The university bought it from our team and I have moved far away from the university.

    You could make a reaction wheel from very cheap materials (we used plexi-glass and some big bolts in our reactive beam project). You could also purchase a small electric motor from a local store to experiment with.

    Thanks,

    Aamer

  • @aalmujah thank you a lot dear Aamer sir and sorry for annoying you

    best regards

    ykhoody

  • Also a big tip, design/select your reaction wheel such that you can adjust the moment of inertia easily (by adding more mass or changing the shape of the wheel). In our case, we put holes along the circumference of the reaction wheels, this gives us the option of adding more mass to the wheel if we needed to.

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