simtk.org

You can wear the exoskeleton, record kinematics and external forces, and then perform the analyses and compare different exoskeleton designs. Unfortunately, this approach is tedious and cannot help you close the loop and improve the design of the exoskeleton using simulations. Alternatively, you can try to solve an optimal control problem where your simulation produces normal walking behaviours (without input kinematics and ground reaction forces) using different exoskeleton designs and then select the best design that minimizes the objectives. You can look at the following projects that have successfully solved the optimal control problem using OpenSim:

https://simtk-confluence.stanford.edu/d ... o+Workshop

https://simtk.org/projects/3dpredictsim

What you try to solve is very challenging and is currently considered state-of-the-art.

Thanks, Dr. stanev for your kind helps and patience,
I will discuss about the alternatives with my professor to find a way to move forward.
Sincerely,
Ali.