Hi Moco Community, I am interested in modelling and simulating exoskeleton assistance, and I was thinking in using Moco for this aim. In this regard I wonder if it is possible to use Moco to run a two-levels optimization. My idea is to solve the muscle redundancy in low level based on a muscle activ...

Hi Daniel, I am no expert but I have some comments to say about it: - RRA changes kinematics by definition. So I think the question is "how much kinematic difference is allowed". There is a publication that talks about it, if you google: "Is my simulation good enough? OPENSIM" I think they mentioned...

Hi, I aim to compare the muscle states with MOCO using two musculoskeletal models: Hamner2010 and LaiArnold2017. Nevertheless, even though I am using the same static trial, marker position, and scaling setup between models, I have "slightly" different results. For instance, after scaling there is a ...

Hi Guys, it was very useful for me as well. I had that problem but for scaling my model in Opensim 4.1. I had the same error "Incorrect number of keys". I followed what Joseph mentioned and it worked. Here is my own: DataRate CameraRate NumFrames NumMarkers Units OrigDataRate OrigDataStartFrame Orig...

Hi guys, Currently, I was planning to evaluate the effect of computing walking muscle states using CMC and MocoInverse. My aim was to use the same model and experimental data to have a clear picture of how different both algorithms are. Since Moco necessarily needs DeGrooteFregly2016 muscle model, I...

Thanks. The way you are setting the initial guess is great. Which motion are you studying? You might enable tendon compliance one muscle at a time to determine which muscle is causing the problem. Hi Christopher, I am analyzing walking with MocoInverse. I use the exact motion data ('coordinates.sto...

Hi Christopher, Yes, I included the configuration of the solver that Dr. Miller implemented in this code and also provided an initial guess to the normalize tendon force as you can see in the following code: import org.opensim.modeling.*; inverse = MocoInverse(); modelProcessor = ModelProcessor('sub...

Hi Moco team, I am not sure why but the MocoInverse matlab code provided as an example: exampleMocoInverse() (as it is), runs only if I ignore tendon Compliance. It is suggested in the forum to changed tendon compliance to implicit formulation to run the simulation. So I did it using either modelPro...

Hi, I am a new Ph.D. student and try to analyze the muscle states: tendon and fiber force, in walking by performing static optimization (SO). For such a purpose, I wanted to use the MuscleAnalysis from the Analyze tool. This tool asked me to input "control" and "states" but the SO does not provide m...

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