As I mention that before that in the wheel turn example, I change axis
of rotation of the wheel with a tilted angle (By defining another
AnyFixedRefFrame as you suggested). The kinematics and inverse
dynamics analysis run through sucessfully, but when I try to view the
result of the muscle forces, they are all zeros!
Actually every parameters are giving me zero values! even the
predefined value of Omega (the wheel’s angular velocity).
I tried commented out the line:
//Axes = RotMat(10*pi/180,z);
in my “AnyFixedRefFrame WheelRef”, and run the kinematic and inverse
dynamics analysis, the data (muscle force, all parameters) are all back.
How can I resolve this problem?
It seem like the axis of rotation must align with the global axis?
I have tried to reproduce your error by introducing the tilted wheel
hub in the same way as you describe, but i fail to get the error you
have.
I would like to debug your model so please zip your wheelturn
directory and upload it to the file section of this group then i
will try to solve your problem.
Sorry about your problems
Best regards
Søren, AnyBody Support
— In anyscript@yahoogroups.com, “Leng-Feng Lee” <lengfenglee@…>
wrote:
>
> Hello Soren,
>
> As I mention that before that in the wheel turn example, I change
axis
> of rotation of the wheel with a tilted angle (By defining another
> AnyFixedRefFrame as you suggested). The kinematics and inverse
> dynamics analysis run through sucessfully, but when I try to view
the
> result of the muscle forces, they are all zeros!
>
> Actually every parameters are giving me zero values! even the
> predefined value of Omega (the wheel’s angular velocity).
>
> I tried commented out the line:
>
> //Axes = RotMat(10*pi/180,z);
>
> in my “AnyFixedRefFrame WheelRef”, and run the kinematic and
inverse
> dynamics analysis, the data (muscle force, all parameters) are all
back.
>
> How can I resolve this problem?
>
> It seem like the axis of rotation must align with the global axis?
>
> Any help and suggestions are greatly appreciated!
>
> Thanks,
> Leng-Feng
>
I am not sure what is the problem. But I tried to restart my PC and
run my model, it works again. Maybe it is due to hardware problem? or
the PC’s memory not enough (I do the ‘frame record’ while having this
problem…)?
Sorry for the trouble and thanks a lot for the debuging efforts!
I guess I shall not do the ‘frame record’ while running analysis on
my model.
> Hi Leng-Feng
>
> I have tried to reproduce your error by introducing the tilted
> wheel
> hub in the same way as you describe, but i fail to get the error
> you
> have.
>
> I would like to debug your model so please zip your wheelturn
> directory and upload it to the file section of this group then i
> will try to solve your problem.
>
> Sorry about your problems
>
> Best regards
> Søren, AnyBody Support
>
>
>
> — In anyscript@yahoogroups.com, “Leng-Feng Lee” <lengfenglee@…>
>
> wrote:
> >
> > Hello Soren,
> >
> > As I mention that before that in the wheel turn example, I change
>
> axis
> > of rotation of the wheel with a tilted angle (By defining another
> > AnyFixedRefFrame as you suggested). The kinematics and inverse
> > dynamics analysis run through sucessfully, but when I try to view
>
> the
> > result of the muscle forces, they are all zeros!
> >
> > Actually every parameters are giving me zero values! even the
> > predefined value of Omega (the wheel’s angular velocity).
> >
> > I tried commented out the line:
> >
> > //Axes = RotMat(10*pi/180,z);
> >
> > in my “AnyFixedRefFrame WheelRef”, and run the kinematic and
> inverse
> > dynamics analysis, the data (muscle force, all parameters) are
> all
> back.
> >
> > How can I resolve this problem?
> >
> > It seem like the axis of rotation must align with the global
> axis?
> >
> > Any help and suggestions are greatly appreciated!
> >
> > Thanks,
> > Leng-Feng
> >
>
>
>
>
>
>
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It is good that it is working, i do not think however that the frame
recording should be able to have this effect, i have never seen
that. If you are still interested i would still like to debug your
problem.
Best regards
Søren, AnyBody Support
— In anyscript@yahoogroups.com, Leng-Feng Lee <lengfenglee@…>
wrote:
>
> Hello Søren,
>
> I am not sure what is the problem. But I tried to restart my PC and
> run my model, it works again. Maybe it is due to hardware problem?
or
> the PC’s memory not enough (I do the ‘frame record’ while having
this
> problem…)?
>
> Sorry for the trouble and thanks a lot for the debuging efforts!
>
> I guess I shall not do the ‘frame record’ while running analysis on
> my model.
>
> Thanks a lot!
>
> Leng-Feng
>
> — AnyBody Support <support@…> wrote:
>
> > Hi Leng-Feng
> >
> > I have tried to reproduce your error by introducing the tilted
> > wheel
> > hub in the same way as you describe, but i fail to get the error
> > you
> > have.
> >
> > I would like to debug your model so please zip your wheelturn
> > directory and upload it to the file section of this group then i
> > will try to solve your problem.
> >
> > Sorry about your problems
> >
> > Best regards
> > Søren, AnyBody Support
> >
> >
> >
> > — In anyscript@yahoogroups.com, “Leng-Feng Lee” <lengfenglee@>
> >
> > wrote:
> > >
> > > Hello Soren,
> > >
> > > As I mention that before that in the wheel turn example, I
change
> >
> > axis
> > > of rotation of the wheel with a tilted angle (By defining
another
> > > AnyFixedRefFrame as you suggested). The kinematics and inverse
> > > dynamics analysis run through sucessfully, but when I try to
view
> >
> > the
> > > result of the muscle forces, they are all zeros!
> > >
> > > Actually every parameters are giving me zero values! even the
> > > predefined value of Omega (the wheel’s angular velocity).
> > >
> > > I tried commented out the line:
> > >
> > > //Axes = RotMat(10*pi/180,z);
> > >
> > > in my “AnyFixedRefFrame WheelRef”, and run the kinematic and
> > inverse
> > > dynamics analysis, the data (muscle force, all parameters) are
> > all
> > back.
> > >
> > > How can I resolve this problem?
> > >
> > > It seem like the axis of rotation must align with the global
> > axis?
> > >
> > > Any help and suggestions are greatly appreciated!
> > >
> > > Thanks,
> > > Leng-Feng
> > >
> >
> >
> >
> >
> >
> >
>
>
> __________________________________________________
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