CMC Warning
Posted: Mon May 21, 2018 8:09 pm
Hi there,
I'm calculating muscle forces with CMC tool, and error occurs. Muscle forces at specific time cannot be calculated.
==================================================================
CMC::computeControls WARNING- small force range for per_long_r (0 to 0)
CMC::computeControls WARNING- small force range for tfl_l (0 to 0)
CMC::computeControls WARNING- small force range for ercspn_l (0 to 0)
SimTK Exception thrown at InteriorPointOptimizer.cpp:264:
Optimizer failed: Ipopt: Infeasible problem detected (status 2)
OPTIMIZATION FAILED...
CMC.computeControls: ERROR- Optimizer could not find a solution.
Unable to find a feasible solution at time = 0.7.
Model cannot generate the forces necessary to achieve the target acceleration.
Possible issues: 1. not all model degrees-of-freedom are actuated,
2. there are tracking tasks for locked coordinates, and/or
3. there are unnecessary control constraints on reserve/residual actuators.
====================================================================
So I'm wondering what I should do to solve this problem. I have checked the possible issues. All model degrees-of-freedom are actuated.
Any advice would be helpful. Thank you.
I'm calculating muscle forces with CMC tool, and error occurs. Muscle forces at specific time cannot be calculated.
==================================================================
CMC::computeControls WARNING- small force range for per_long_r (0 to 0)
CMC::computeControls WARNING- small force range for tfl_l (0 to 0)
CMC::computeControls WARNING- small force range for ercspn_l (0 to 0)
SimTK Exception thrown at InteriorPointOptimizer.cpp:264:
Optimizer failed: Ipopt: Infeasible problem detected (status 2)
OPTIMIZATION FAILED...
CMC.computeControls: ERROR- Optimizer could not find a solution.
Unable to find a feasible solution at time = 0.7.
Model cannot generate the forces necessary to achieve the target acceleration.
Possible issues: 1. not all model degrees-of-freedom are actuated,
2. there are tracking tasks for locked coordinates, and/or
3. there are unnecessary control constraints on reserve/residual actuators.
====================================================================
So I'm wondering what I should do to solve this problem. I have checked the possible issues. All model degrees-of-freedom are actuated.
Any advice would be helpful. Thank you.