[robocup-small] Major Rule Changes 2012 Discussion

Tue Nov 8 07:43:38 EST 2011

Hi,

I think that just the first two changes will make the game a little more
collaborative, and more realistic. However the last two changes will not
contribute to achieve the category goals, because the problem is just not
ball’s velocity, it is also robot´s velocity. Right now, many teams are
using brushless motors, which allow their robots reach velocities of 2 m/s.
This velocity makes that a forward could back to his defensive zone just in
a few second, which is unrealistic in comparison of indoor soccer (In my
point of view SSL is like this game).

Thus, it does not matter if the field is bigger, because defenders will be
near to goalkeeper and they will be stay there, while forwards come and go
back to opponent zone in a few second, making unnecessary the collaboration
of defenders. If we want to make a more intelligent game and nearest to
human soccer, we have to constraint robots and ball velocity to velocities
reached in human soccer.

Regards,

Julian Angel

2011/11/2 Angelo Gurzoni Jr <jgurzoni at yahoo.com.br>

> Hello, everybody !****
>
> The TC, after consultation with the Execs and OC, is issuing a major rule
> changes proposal for community consideration. ****
>
> We kindly ask teams to provide feedback and discuss it using the ssl
> mailing list, *until November 16th*. The TC will try its best to
> summarize the feedback and answers in a document available to everybody. Please
> send your comments, suggestions and feedback.****
>
> * *
>
> *MAJOR RULE CHANGES FOR 2012 PROPOSAL*****
>
>
> After having evaluated various ideas and analyzed the results of the
> member survey, the TC has elaborated some rule change proposals that we
> believe will make the game more intelligent.
> Is the TC understanding that the first two rule changes may be simpler to
> implement, while the last two have deeper impacts, which is one more (not
> the only !) reason to ask for community feedback.
> Please also consider that the number of major rule changes in a single
> year needs to be constrained, so the final decision likely will not include
> all the four proposals. Depending on the community feedback, it is possible
> that a change not implemented may be added as a technical challenge or to
> the RoadMap (3 year plan) discussion, to occur right after the rule change
> decision.
>
> *1) Ball’s maximum speed reduction*****
>
> The current maximum ball speed on the SSL is too high, leading to games
> with elevated number of throw-ins and favoring of simple shooting to the
> goal over passing. The TC considers that a reduction to the maximum ball
> speed to a number *around* 6 m/s would be beneficial and lead to a more
> intelligent game. A plug-in to check compliance is to be created, but
> regardless of it the TC trusts teams to apply the changes. If anybody in
> the community thinks of some test that can be performed in lab to adjust
> the maximum ball speed, the TC would welcome suggestions.****
>
>
> *2) Defense area increase*****
>
> The current defense area, of 500mm, allows that most teams use what seem
> to actually be 3 goalkeepers, when defending, using two robots in front of
> the goalkeeper. To make this strategy less efficient and incentive teams to
> play smartly, the TC considers that the defense area should be expanded to
> 800mm. The penalty mark will be moved accordingly, to 750mm. This change is
> irrespective of a change in field size, and shall the field size change the
> defense area must be scaled based on the proposed size.****
>
>
> *3) Change in number of players to 6*****
>
> The TC believes that the addition of a 6th robot on the SSL teams will
> increase the possibilities for passing and intelligent plays. The benefits
> are manifold: Teams can increase the number and variety of team plays,
> experiment with more agents in the field and create different behaviors for
> robots and. The TC believes the current field size to be enough for 12
> robots and that cluttering of robots on the space will not be significant*
> ***
>
> The TC understands that there is additional financial costs involved, but
> based on the responses of the SSL Survey, when most teams agreed with this
> proposal, the TC understands that most teams are ready for the change and
> in fact may already have enough extra robots for that. We would like to
> receive feedback to confirm this understanding, as well as to know if there
> are teams which cannot afford this change because of financial restrictions
> .****
>
>
> *4) Field Size Slight Increase*****
>
> The TC is considering a proposal to increase the field size to 5.0 x 7.5m,
> as well as proportionally adjusting also the other field markings and goal
> size. Thanks to the MRL team, the feasibility of the new field size in
> SSL-Vision (using 2 cameras), was tested and confirmed.****
>
> However, there’s concern on the TC about how teams who want/need to
> maintain fully sized fields in their laboratories will accommodate the
> increase and the overall feedback of the teams about the idea. ****
>
> Be aware also that a permission from the RoboCup Federation may be needed
> to increase field sizes, as a general guideline received is to keep field
> sizes similar throughout all the leagues (except middle size)****
>
> ** **
>
> ** **
>
> Regards,****
>
> Christopher Head, Mohammad Hoshyari and Angelo Gurzoni Jr****
>
> The SSL TC for RoboCup Mexico 2012.****
>
> ** **
>
> ** **
>
> _______________________________________________
> robocup-small mailing list
> robocup-small at cc.gatech.edu
> https://mailman.cc.gatech.edu/mailman/listinfo/robocup-small
>
>

-- 
_________________________________________________
Julian Mauricio Angel Fernandez
Electronic Engineer
Systems and Computer Engineer
Master of Science in Systems and Computer
Universiad de Los Andes, Colombia (south America)
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