Greetings, I am new using Opensen and I followed the tutorials. However, I do not have the xsense sensors but I have the quaternion and the time stamp information of the IMU sensors (Polhemus tracking system) that I am using. I would like to know if there is a tutorial on how to build the sto-file f...

Greetings, I would like to know if there is any way to import an exoskeleton and attach it to a human model. I want to evaluate the reaction forces at the joint of the person due to the exoskeleton, and see then obtain the EMG data using CMC. Also, if anyone has any suggestion to perform what I want...

Greetings, I have been trying to use the CMC tool with MobL-ARMS Upper Extremity Model (the latest version) with my set of experimental data. I have been able to get the ik solution, the simulation run smoothly. However, when I try to use the CMC tool, after a few timesteps the model start dislocati...

Hello Hugo, Did you manage to make it work? I'm having the same problem with the CMC, I've been searching for information to understand what is wrong without luck. I appreciate any updates. Thank you. Did you solve this problem? I am having the same issue while trying to use my experimental data to...

Greetings, I have been trying to figure out how to get EMG information provided an Inverse Kinematic Solution using the static optimization tool. After running the tool I get 3 files, subject_Activation.sto, subject_control.xml, and subject_force.sto. I would like to know whether the subject_Activat...

It looks like OpenSim was unable to save the file ("Failed to write to the Xml file"). This error is typically encountered when trying to write to a directory to which OpenSim does not have write access. However, in this case, I think you are exceeding the Windows character limit for the path + fil...

I have been trying to use the Static Optimization tool, however, when it is about 99%, I get the error saying "Required condition 'saveOK' was not met" java.lang.RuntimeException: SimTK Exception thrown at Xml.cpp:115: Error detected by Simbody method Xml::writeToFile(): Failed to write to the Xml f...

Greetings, I am having some problem scaling an upper extremity model. After the scaling, the resulting model ulna and radius are dislocated with respect to the humerus and the hand. The model that I am using has a geometry folder, which path I have already added to the GUI. Does anyone have an idea ...

Hi Pablo, I can't remember how the MOBL model is constructed with respect to the torso, but I suspect like most models the torso is "joined" to the ground body of the model (and then all other joints flow on from the torso). The type of joint used for this (e.g. a weld joint, meaning the torso cann...

Hi Pablo, I've had similar problems to this with gait models during scaling when the limits on the coordinates don't allow the model to move to the position described by the markers. For example - I had a static calibration trial where a participant faced in the -X direction, but the axial rotation...