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  #1  
Old 08-19-2018, 03:01 PM
mirulmus mirulmus is offline
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Join Date: Aug 2018
Posts: 8
Default Loading c3d into LowerExtremity.main.any

Hi,

I want to calculate three joints load (knee joint, ankle joint, hip joint) by using the motion capture data and force plates data that I have in c3d file. However, I received this error:


************************************************** *************************************
0) Operation Sequence: (Operation: Main.RunParameterIdentification):
0.0) Operation Sequence: (Operation: Main.RunParameterIdentification.ParameterIdentific ation):
0.0.0) Dummy operation: (Operation: Main.RunParameterIdentification.ParameterIdentific ation.placeholder_operation):
0.1.0) Kinematic optimization (Operation: Main.Studies.ParameterIdentification.ParameterOpti mization):
0.1.0.0) Operation Sequence: (Operation: Main.Studies.ParameterIdentification.Analysis):
0.1.0.0.0) Kinematics (Operation: Main.Studies.ParameterIdentification.KinematicStud yForParameterIdentification.Kinematics):
0.1.0.0.0.0) PreOperation (Operation: Main.Studies.ParameterIdentification.KinematicStud yForParameterIdentification.Kinematics.PreOperatio n):
0.1.0.0.0.0.0) InitialConditions (Operation: Main.Studies.ParameterIdentification.KinematicStud yForParameterIdentification.InitialConditions):
0.1.0.0.0.0.0) ...Design variables have been updated.
0.1.0.0.0.0.1) ...Load-time positions have been re-established.
0.1.0.0.0.0.1.0) PreOperation (Operation: Main.Studies.ParameterIdentification.KinematicStud yForParameterIdentification.InitialConditions.PreO peration):
0.1.0.0.0.0.1.0.0) KinematicView (Operation: Main.ModelSetup.Views.SetViewMacros.KinematicView) :

#### Macro command : KinematicView(1:1)> classoperation Main.ModelSetup.Views.KinematicView"Set View"
0.1.0.0.0.0.2) ...Kinematic analysis completed.
0.1.0.0.0.0.3) ...Dependent variables are fully updated.
0.1.0.0.0) Kinematic analysis...
Failed to resolve kinematic constraints. Newton relaxation too small. (final kin. error = 5.293100E-004)
Optimality cond.no. 0 above error tolerance 0.000010, error = 0.000030.
Optimality cond.no. 1 above error tolerance 0.000010, error = 0.000087.
Optimality cond.no. 2 above error tolerance 0.000010, error = 0.000060.
Optimality cond.no. 3 above error tolerance 0.000010, error = 0.000015.
Optimality cond.no. 4 above error tolerance 0.000010, error = 0.000016.
Optimality cond.no. 5 above error tolerance 0.000010, error = 0.000015.
Optimality cond.no. 6 above error tolerance 0.000010, error = 0.000020.
Optimality cond.no. 22 above error tolerance 0.000010, error = 0.000013.
Optimality cond.no. 28 above error tolerance 0.000010, error = 0.000013.
Optimality cond.no. 29 above error tolerance 0.000010, error = 0.000019.
Optimality cond.no. 35 above error tolerance 0.000010, error = 0.000017.
Optimality cond.no. 36 above error tolerance 0.000010, error = 0.000024.
Optimality cond.no. 42 above error tolerance 0.000010, error = 0.000022.
Optimality cond.no. 43 above error tolerance 0.000010, error = 0.000029.
Optimality cond.no. 56 above error tolerance 0.000010, error = 0.000025.
Optimality cond.no. 57 above error tolerance 0.000010, error = 0.000031.
Optimality cond.no. 129 above error tolerance 0.000010, error = 0.000014.
Optimality cond.no. 130 above error tolerance 0.000010, error = 0.000013.
Optimality cond.no. 147 above error tolerance 0.000010, error = 0.000214.
Optimality cond.no. 148 above error tolerance 0.000010, error = 0.000053.
Optimality cond.no. 154 above error tolerance 0.000010, error = 0.000072.
Optimality cond.no. 155 above error tolerance 0.000010, error = 0.000529.
Optimality cond.no. 156 above error tolerance 0.000010, error = 0.000222.
Optimality cond.no. 157 above error tolerance 0.000010, error = 0.000011.
Optimality cond.no. 159 above error tolerance 0.000010, error = 0.000126.
Optimality cond.no. 160 above error tolerance 0.000010, error = 0.000092.
Optimality cond.no. 161 above error tolerance 0.000010, error = 0.000142.
Optimality cond.no. 162 above error tolerance 0.000010, error = 0.000035.
Optimality cond.no. 163 above error tolerance 0.000010, error = 0.000067.
Optimality cond.no. 164 above error tolerance 0.000010, error = 0.000174.
Optimality cond.no. 165 above error tolerance 0.000010, error = 0.000081.
Optimality cond.no. 166 above error tolerance 0.000010, error = 0.000051.
Optimality cond.no. 167 above error tolerance 0.000010, error = 0.000052.
Optimality cond.no. 171 above error tolerance 0.000010, error = 0.000321.
Optimality cond.no. 172 above error tolerance 0.000010, error = 0.000261.
Optimality cond.no. 173 above error tolerance 0.000010, error = 0.000201.
Optimality cond.no. 274 above error tolerance 0.000010, error = 0.000091.
Optimality cond.no. 362 above error tolerance 0.000010, error = 0.000016.
Constraint violations for study 'Main.Studies.ParameterIdentification.KinematicStu dyForParameterIdentification' :
Constraint #78 is above tolerance 1e-005, error = 0.000091, constr. #0 in 'Main.HumanModel.BodyModel.Trunk.JointsCervicalSpi ne.Rotation.CervicalRotationRhythmDrv'.
Constraint #277 is above tolerance 1e-005, error = 0.000016, segment constr. 'Main.HumanModel.BodyModel.Left.Leg.Seg.Foot'.
ERROR(OBJ.MCH.KIN3) : C:/P..s/A..y/A..1/AMMR/T..s/A..p/KinematicStudyForParameterIdentification.any(8) : KinematicStudyForParameterIdentification.Kinematic s : Kinematic analysis failed in time step 2 : Position analysis is not completed


What should I do?

Regards,
Amirul.
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  #2  
Old 08-20-2018, 01:31 PM
mkjung9980's Avatar
mkjung9980 mkjung9980 is offline
Senior Member
 
Join Date: Aug 2009
Posts: 886
Default

Dear Amirul,

This kind of kinematics error may be very common if there are some reasons.

I would suggest you to adjust the initial posture of the human model to have a better fit to the marker configuration.

If you can't still solve the issue, then please try to attach a zip file of your model here.

Best regards,
/MJ
__________________

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