Hi
The standing model uses drivers which works on each of the joints in
the human part of the model. So basically this model is suited for
modelling of tasks where the body is not controlled by other
objects, such as grapping a weightlifter bar. If you want the model
to grap with the right and left hand around a bar you need to make
changes in the JointsAndDrivers.any file.
I would suggest that you start with the standingmodel and in the
environment.any file you define a new segment which is the bar. You
should also add drivers for this segment and make sure that it moves
in the way you want before you proceed. Remember to create two nodes
positioned where you want the hands to be located. You should also
remember to give the bar segment a reasonable initial position.
Next step is to make the standingmodel grab the bar. Here you should
modify the JointsAndDrivers.any file. I would suggest that you start
by adding two spherical joints between the right and left hand and
the two nodes you have defined on the bar. Since you have now added
three kinematic constraints in terms of the spherical joint for each
arm you need to remove drivers for three dof for each arm, otherwise
the mechanism will be over determined. I would suggest to remove the
GH flexion, GH rotation and Elbow flexion since these can be
controlled by the movement of the bar. It can be a lillte tricky to
remove the correct dof from the drivers. In the measureorganizer for
the right side there is a vector looking like this
MeasureOrganizer={2,0,1,3,5,6,7,8,9,10};
This tells the sequence of dof to be used
To exclude the dof i listed previously it should look in the
following way
MeasureOrganizer={2,0,1, 3, 5 ,6,10};
This will remove these three dof from this measure, you then need to
remove them form the DriverPos, DriverVel and reaction.type as
well. You can read more about measureorganizers in the manual.
To stretch the knee you could add a velocity to the knee flexion
file, currently it is set to zero.
Best regards
AnyBody Support
— In anyscript@yahoogroups.com, “ing_bio982” <ing_bio982@y…>
wrote:
> Hi ,
>
> I’m working to weightlifting’s model with AnyBody Modeling
> System.
> I’m making reference to the standing model in the repository, but
> can you help
> me to move it?
> I have difficulties with drivers!
> another my difficulty is to seek the root of the
different “include”
> in the
> Main file to be able to modify them. Have you some suggestion to
> give me?
> I have succeeded in modifying the initial position of the
skeleton,
> with a bending of the knees, now my principal purpose is to move
it,
> making to stretch his knees… how can I make?
> which drivers can be more convenient for this?
>
>
>
> Thank You