Question to AnyKinEqInterPolDriver

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1

Hi John

Happy New Year!!

My aim is to run the BikeModel, from the repository, with insert
measure-dates. If I understood the tutorial correct, then I should be
able to this with the driver AnyKinEqInterPolDriver. I used the
tutorial DemoForces.any as model-example.

First I tried to apply the driver AnyKinEqInterPolDriver by the file
Demo.SliderCrank3D.any. I tried to force the slider for- and backward
(like the dummy in DemoForces.any), but I did not work!

I have two problems:

  1. With the driver I can move the slider only when I delete the two
    other segments.
  2. If I apply the same orders (from 1.) to the whole SliderCrank, it
    does not work. I got the error message : The matrix must contain the
    same number of rows as there are coordinates to be driven. Model
    loading skipped.

My questions:

  1. Do you know what I did wrong?
  2. Do you have an example, where you are using AnyKinEqInterPolDriver
    for moving a segment?
  3. How could I insert x,y,z coordinates (Data) per time (T)?

Best regards
Jürg Leemann

2

Hello Jürg,

Thanks for using the Yahoogroup. Here are some short answers:

  1. My best guess is that you added the interpolation driver to the
    slider but forgot to remove the simple driver from the revolute
    joint. In general, if you add one driver you have to remove another
    one. Otherwise the system becomes over-determinate.

  2. I shall upload a simple 2-D gait example to the files section of
    the group. This example uses motion capture data to drive the gait
    cycle.

  3. I think the best would be to have a look at the files enclosed in
    the gait example. It should be self explanatory. If not, please ask
    again.

Best regards,
John
AnyBody Support

— In anyscript@yahoogroups.com, “jrgleemann” <lee5@b…> wrote:
>
>
> Hi John
>
> Happy New Year!!
>
> My aim is to run the BikeModel, from the repository, with insert
> measure-dates. If I understood the tutorial correct, then I should
be
> able to this with the driver AnyKinEqInterPolDriver. I used the
> tutorial DemoForces.any as model-example.
>
> First I tried to apply the driver AnyKinEqInterPolDriver by the
file
> Demo.SliderCrank3D.any. I tried to force the slider for- and
backward
> (like the dummy in DemoForces.any), but I did not work!
>
> I have two problems:
> 1. With the driver I can move the slider only when I delete the two
> other segments.
> 2. If I apply the same orders (from 1.) to the whole SliderCrank,
it
> does not work. I got the error message : The matrix must contain
the
> same number of rows as there are coordinates to be driven. Model
> loading skipped.
>
> My questions:
> 1. Do you know what I did wrong?
> 2. Do you have an example, where you are using
AnyKinEqInterPolDriver
> for moving a segment?
> 3. How could I insert x,y,z coordinates (Data) per time (T)?
>
>
> Best regards
> Jürg Leemann