Openrobots

2023-07-20

11:42 genomix Bug #390: time for reading port with sequence scales weirdly

I'm using Gazebo to generate depth images (https://redmine.laas.fr/projects/gazebo_models/repository/gazebo_models/re... Martin Jacquet

2023-07-17

20:02 genomix Bug #390 (Closed): time for reading port with sequence scales weirdly

I'm trying to read data from a port which contains a sequence of bytes through genomix (I have the same issue with bo... Martin Jacquet

2022-09-26

15:45 libmrsim Bug #367: Incoherence of drag constant in motor dynamics / wrench computation

I did some tests with both mrsim-genom3 and mrsim-gazebo, it seems to work fine, at least for the overall drone behav... Martin Jacquet

2022-09-20

19:57 libmrsim Bug #367: Incoherence of drag constant in motor dynamics / wrench computation

Oh right, I actually assumed the drag coefficient in the motor equation to be the one induced by the air friction, bu... Martin Jacquet

2022-09-15

00:34 libmrsim Bug #367: Incoherence of drag constant in motor dynamics / wrench computation

Martin Jacquet wrote:
> the default drag for the motor and the default allocation matrix G do not seem to match.
... Martin Jacquet

00:23 libmrsim Bug #367 (New): Incoherence of drag constant in motor dynamics / wrench computation

The drag constant used in the motor equation (motor->b) should be the same quantity as the drag coefficient of the mo... Martin Jacquet

2022-07-06

12:02 pom-genom3 Bug #353: Missing scalar in Jacobian computation

> It seems to me that the Jacobian of this should be:
> @J = de/dq(q = identity) * q(t)@
This equation does not see... Martin Jacquet

2022-06-30

16:33 pom-genom3 Bug #353 (Closed): Missing scalar in Jacobian computation

Applied in changeset commit:pom-genom3|0327669fdf566fb43d81615df5d07e3774926fcc. Martin Jacquet

15:14 pom-genom3 Bug #353: Missing scalar in Jacobian computation

I just check my computation, there was indeed a missing minus before v*v^T. Fixing this, I reach the same formula as ... Martin Jacquet

2022-06-29

17:36 pom-genom3 Bug #353: Missing scalar in Jacobian computation

My point was that taking the absolute value of qw (line 179) is wrong IMO.
Even if the delta is always <π (except may... Martin Jacquet