CMC not tracking kinematics
Posted: Fri Jul 09, 2010 7:42 am
I am working on a leg press simulation and cannot get the CMC to work properly. When I run the CMC it does not appear to be tracking the kinematics that I put in from the IK calculation. One possible reason is that I have the "Adjust kinematics" box checked, but it will not run if I do not have that checked. If it is not checked I receive the error "Tool execution failed. Check Messages window for details." and the Messages window says
"CMC.computeControls: t = 0.8
WARN- small force range for extobl_r (0.717673 to 0.864977)
WARN- small force range for extobl_l (0.632113 to 0.779296)
SimTK Exception thrown at InteriorPointOptimizer.cpp:249:
Optimizer failed: Ipopt: Unrecoverable exception (status -100)
OPTIMIZATION FAILED...
CMC.computeControls: WARN- The optimizer could not find a solution at time = 0.800000.
If using the fast target, try using the slow target.
Starting at a slightly different initial time may also help."
I already switched from the fast solver to the slow one and that didn't help.
I also received that same type of error when running the gait 2354 example when I took off the external loading if that information is useful to you at all.
"CMC.computeControls: t = 0.8
WARN- small force range for extobl_r (0.717673 to 0.864977)
WARN- small force range for extobl_l (0.632113 to 0.779296)
SimTK Exception thrown at InteriorPointOptimizer.cpp:249:
Optimizer failed: Ipopt: Unrecoverable exception (status -100)
OPTIMIZATION FAILED...
CMC.computeControls: WARN- The optimizer could not find a solution at time = 0.800000.
If using the fast target, try using the slow target.
Starting at a slightly different initial time may also help."
I already switched from the fast solver to the slow one and that didn't help.
I also received that same type of error when running the gait 2354 example when I took off the external loading if that information is useful to you at all.