Electronics > Electronics

Feedback control in omni wheel robot

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Aziz:
I am making an omni wheel robot as gven on the website below

http://www.societyofrobots.com/robot_omni_wheel.shtml#fuzzy

I was wanting to know that would a feedback control loop be required to be attatched with each of the four servo motors ?

Secondly the electronics of the robot. has not been explained on the website I would be thankful if I could get some help in this regard

Admin:

--- Quote ---I was wanting to know that would a feedback control loop be required to be attatched with each of the four servo motors ?
--- End quote ---

I used no feedback control on the servos of that robot. All feedback came from the sonar and scanning IR only.


--- Quote ---Secondly the electronics of the robot. has not been explained on the website I would be thankful if I could get some help in this regard
--- End quote ---

I used the Cerebellum by Botrics. However, they discontinued their product and are no longer selling them. The electronics doesnt really matter,  a microcontroller of any type will work . . .

Aziz:
I see

But if I want to control the robot myself would I still be requiring the sonar system and IR scanner and secondly what would be the best way to control the robot. I want to use an RF transmitter and receiver and interface the transmitter to the computer so that all movements of the robot can be fully controlled by the computer. Could you please help me a little on this.   

Admin:
Well it depends on what you want the robot to do.

You could just go without sensors, but then what would your robot do if it couldnt 'see'?

The best way to control it would be to use a microcontroller:
http://www.societyofrobots.com/microcontroller_tutorial.shtml
http://www.societyofrobots.com/step_by_step_robot_step3A.shtml (you can also buy one ready-made)

To make it wireless and controlled by the computer, you will need to interface someone wireless electronics with your microcontroller. Search this forum for 'bluetooth' and 'easyradio'.
this might be helpful, too: http://www.societyofrobots.com/electronics_bluetooth_robot.shtml

If this is your first robot, you may want to keep things simple and stay away from wireless. :P

Aziz:
Well you see I would myself be controlling the robot from my PC so I dont think I would be requiring sensors

And I am a student of final year communication engineering and this is my senior proejct..wireless control of this robot..so as much as I would love to.. I cant leave the wireless control part out.

I shall now explain to you fully my objective..I have to develope a program perhaps in VC++ that provides an interface to fully control the omni wheel robot in a wireless fashion..I mean like I would have buttons for forward,left,right, spin...and by clicking on them the robot should act correspondingly. So please would u advise me the easiest and simplest way out...Thnx

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