Hi everyone, I am new to opensim,so I have some questions with the static optimization and joint reaction analysis during sit to stand transfer. When I run the SO,the residual actuators were a little large,and My is about -165.I don't know how to reduce them.Then I run the analysis,however the joint...

Hello all, I have some problem in scaling the model in the GUI. The marker points are only on the volunteers' lower limbs and pelvis, and the torso is not fixed with markers,as show in fig 1,2,which contain the virtual and experimental marker at the same time. I scaled the model until the marker err...

Hi, I have encountered some problems when performing RRA.After running RRA,the model disappeared at the first frame,with low new mass and huge Fy. I found that after running RRA, sometimes a sto file is generated that selects a fixed time period,including GRF, GRM and cop in this interval. The value...

Hi Ayman, Thanks for your reply. I implemented the examples in the opensim tutorial and my own,and checked the message window. I found that when applying GRF,there was a difference. The following is in the tutorial: Storage::read data file =subject01_walk1_grf.mot (nr=1501 nc=19) ExternalForce::righ...

Hi Carmichael , Thanks for your reply. I implemented the examples in the opensim tutorial and my own,and checked the message window. I found that when applying GRF,there was a difference. The following is in the tutorial: Storage::read data file =subject01_walk1_grf.mot (nr=1501 nc=19) ExternalForce...

Dear Experts, I also encountered some problems when I run RRA and mot file. The torque in the mot file is -nan(ind),and the cop is nan.It appeared nan when the volunteer did not step on the force platform, and when the first force platform was stepped on, the second and third blocks had no data.Only...

Hi Ayman, I also encountered the same problem. The torque in the mot file is -nan(ind),and the cop is nan.It appeared nan when the volunteer did not step on the force platform, and when the first force platform was stepped on, the second and third blocks had no data.Only the force platform stepped o...

And I tried to run the IK,5 markers are still there,without moving. Same as the marker in Figure 1.

Hello, I'm in trouble with scale. After I adjust the markers on the model,the same as I put on the subject. And then I scaled the model. I have some problems. 1.When I hit preview static pose,some of the markers are away from the model,as in picture 1.When I hit the run directly,it seems well. 2.Aft...