Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Holonomic vehicle with orientation: regularization #18

Closed
timmercy opened this issue Apr 13, 2016 · 2 comments
Closed

Holonomic vehicle with orientation: regularization #18

timmercy opened this issue Apr 13, 2016 · 2 comments

Comments

@timmercy
Copy link
Member

It is possible to regularize on the change in orientation of the vehicle. For the examples I tested this was only necessary for the freeT problems. fixedT problems solved well without regularization.

For now there is an option which the user can set to regularize with a 1-norm or a 2-norm. He has to tune the weight himself.

There are 2 issues here:

  • If you do a 1-norm regularization with weight 0 there are still constraints added, so while you would expect no change in behaviour there is really a change.
  • If you do a regularization for the fixedT problem with a weight which is too high you reach the goal position, but not with the desired orientation.
@rubenvanparys
Copy link
Member

You could check if the weight == 0.0 in order to add the constraints and
part of the objective.

The second issue sounds natural as a trade-off is made between 'minimize
change of orientation' and 'bring orientation to desired orientation'...

On 13-04-16 11:13, timmercy wrote:

It is possible to regularize on the change in orientation of the
vehicle. For the examples I tested this was only necessary for the
freeT problems. fixedT problems solved well without regularization.

For now there is an option which the user can set to regularize with a
1-norm or a 2-norm. He has to tune the weight himself.

There are 2 issues here:

  • If you do a 1-norm regularization with weight 0 there are still
    constraints added, so while you would expect no change in
    behaviour there is really a change.
  • If you do a regularization for the fixedT problem with a weight
    which is too high you reach the goal position, but not with the
    desired orientation.


You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub
#18

@timmercy
Copy link
Member Author

Okay yes, that's maybe the most safe way to implement it then, I will push it like that.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

2 participants