My mechatronics studies final project

1

Hi everyone,
My name is Amit and I’m a 12th-grade high school student.
These days I’m working on my mechatronics studies final project which is a “cubli” inspired project That I decided to name “Cubex”.
(If you are not familiar with the “cubli” project you should really watch this video)

At the moment, I’m looking for a motor controller for the project and it seems that the ODrive might just fit pretty well.
In order to be sure it will do the job, I would really appreciate if you guys can answer some question about the ODrive for me:

  1. My motor is a hall-effect sensored bldc motor. will I be able to get the current speed in real-time?
  2. Is it possible to control the velocity by acceleration? can I send acceleration values that will change the speed?
  3. In Velocity Control Mode - is it possible to command negative speed for reversed motion?
  4. Is the velocity control a closed-loop?
  5. Is the controller what some calls a “4-quadrant” controller? can it apply negative torque to the motor while it spins in the other direction?
  6. Can the ODrive be controlled from a microcontroller?
  7. Will it work well in low speeds with 18V and Continuous current of 4 Amps? (Max current 10 amps)

And last but not least - is there any way to get a discount as my budget is very limited?

The pictures below are from my fusion360 cad design of Cubex :smiley:
Thanks in advance :slight_smile:

3D%20Assembly%20v50%20view
3D Assembly v50 view.png1920×1080 413 KB

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2D%20Assembly%20v96
2D Assembly v96.jpg1920×1080 324 KB

3

3D%20Assembly%20v50
3D Assembly v50.png1920×1080 295 KB

4

Motor%20and%20Brakes%20Assembly%20v78
Motor and Brakes Assembly v78.png1920×1080 83.3 KB

5

Hi

Interesting project, someone from my school is making the same.

  1. yes

  2. yes, take a look at the docs

  3. yes, take a look at the docs

  4. yes, but it would be better with an encoder tho

  5. I think so

  6. yes

  7. How slow do you want is to turn?

Last but not least, no, I used 3 ODrive’s in my graduation project (6 dof racesimulator) and I didn’t get a discount.

Cheers

Carelsbergh Stijn

6

@Stijn_Carelsbergh Thank you for your answer.

about 7 - I want it to turn as slowly as about 30 rpm and even lower and it is also important that I will be able to decelerate until it will start spinning in the other direction and so.
Is it possible?

Thanks,
Amit Ramati

7

Depends on your encoder resolution and cogging torque. The higher the resolution and lower the cogging torque, the better.