Subject:
|
Re: another comparison
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Sun, 21 Jan 2007 13:37:46 GMT
|
Viewed:
|
2972 times
|
| |
|
|
In lugnet.robotics, Brian Davis wrote:
> I'd love to make some other comparisions; actually, some of us have been trying
> to figure out a good way to do this. Part of the problem is defineing specific
> "goals" for a battery of tests.
>
> It's not a simple problem. As recent discussions have sometimes pointed out,
> folks have very different viewpoints on what is or is not a good test, or what a
> "good" comparision is... and if we want a speed comparison to be as useful as
> possible to the community, it needs to be fairly generally agreed upon.
>
> So, ideas from the group?
Perhaps a good benchmark would be to write a PID controller and measure the
number of control loop iterations per second that can be achieved under each
environment. This incorporates sensor input with motor output, and uses a
moderate amount of computation in the middle. It is also a very useful
"real-world" application in robotics. (Unfortunately, any sensor-input
application is ultimately bounded by the maximum sampling rate of the sensors,
although I think both RCX and NXT use a ~2ms sampling rate.)
My gut tells me that the RCX (using BrickOS) would give the NXT (using anythng
available so far) a good run for its money, though...
|
|
Message has 2 Replies:
 | | RE: another comparison
|
| Chris Phillips wrote on Sunday, January 21, 2007 7:38 AM "My gut tells me that the RCX (using BrickOS) would give the NXT (using anything available so far) a good run for its money, though..." Once you reach a certain base performance level, then (...) (17 years ago, 21-Jan-07, to lugnet.robotics)
| | | Re: another comparison
|
| (...) 1. The DFT certainly may be considered as overkill for a toy robot kit. But I am not sure that this forum considers the RCX or NXT only as toys. To say that NXT or RCX are not made for this or that is like saying to the inventor of the pencil (...) (17 years ago, 21-Jan-07, to lugnet.robotics)
|
Message is in Reply To:
| | Re: another comparison
|
| (...) I'd love to make some other comparisions; actually, some of us have been trying to figure out a good way to do this. Part of the problem is defineing specific "goals" for a battery of tests. A DFT (while impressive), is propably not the best (...) (17 years ago, 21-Jan-07, to lugnet.robotics)
|
11 Messages in This Thread:
  
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
