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Hello,

I am trying to use prescribed function to move the coordinate joint in the desired position using FD tool.

I have been using
<PiecewiseLinearFunction>
<x> 0 1 2 3 4 5 6</x>
<y>0.054530 0.193382 -0.0007 -0.00630 0.01611 0.02281 0.02328</y>
</PiecewiseLinearFunction>

After running the FD tool it give me the following error:

ForwardTool::run() caught exception
SimTK Exception thrown at AbstractIntegratorRep.cpp:428:
Integrator step failed at time 1 apparently because:
SimTK Exception thrown at AbstractIntegratorRep.cpp:547:
Error detected by Simbody method AbstractIntegrator::takeOneStep(): Unable to advance time past 1.
(Required condition 't1 > t0' was not met.)

I know there is some problem with function since I am not translating the joint linearly.
Any suggestion which function will work based upon my trajectory of joint?

Thank you!

Regards,
Rahul

Hello, when I use the Prescribed_Function and click the simulation button, I will always exit OpenSim software automatically. Can you tell me the reason and look forward to your reply