Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: Electron on January 07, 2011, 05:21:51 PM
-
Hello, everybody......
i really need your guidance. i m making a robot which have to performs two task: line following + box placing..
it must be heavy in weight, because of its body and robotic arm (for picking a box, sense its color and then place it in a chamber of same color )
http://www.nerc.com.pk/images/floorplan2.jpg (http://www.nerc.com.pk/images/floorplan2.jpg)
my first task is to select motors .....i search motors a lot but cant find best....my robot weight lie in this range 10 kg- 14kg
i also want feedback, better positioning ,smooth turns....
(little)^4 guidance is required....
i further ask my question, but plz figure out this problem first.......
i m doing differential drive, its base will be triangular.... means three wheel bot,... first wheel will do free wheeling...
plz help in motor selection
-
something like this Intelligent Robot Contest p1 (http://www.youtube.com/watch?v=timkltAWd74#)?
-
Hi,
my first task is to select motors .....
No, your first task (here) is to tell us exactly what you have done so far on your project and then to ask specific questions that can be answered.
Non-specific questions with no data leads to non-specific answers based on wuild guesses.
-
thanks for replying
i have full control on DC motor direction + speed, but not with feedback
my 2 sensor o/p just work fine......
as i am stepping forward, i m facing problems 1; cant use dc motor...because of torque & weight.
actually my fellows made me confuse,
some say , servo dc, some says....BLDC motors .....also the feedback + heavy weight movement with good rpm...
-
hi,
[off topic] what college do you belong to? NUST or UET?
[on topic]
to sum it up,
get dc geared motors, start working on encoders. use atleast 8 sensor array, with PID control.
-
Hi,
i have full control on DC motor direction + speed, but not with feedback
my 2 sensor o/p just work fine......
Just trying to see if I got that right:
You know how to control a DC motor, but the ones you have are too weak
You have decoders to get speed feedback and they work, but you don't use them
Is that correct?
as i am stepping forward, i m facing problems 1; cant use dc motor...because of torque & weight.
How large are the motors and have you got any data on them?
Are the motors geared down?
How fast do you want to move the 10..14kg and how large are your wheels?
actually my fellows made me confuse,
some say , servo dc, some says....BLDC motors .....also the feedback + heavy weight movement with good rpm...
BLDC will only make it harder on you and R/C servos won't pull the weight, so stay with regular brushed DC motors.
What exactly do you need help to with the feedback?
Data is NEEDED to help you, so please answer all the above questions (the one ending in "?").