We've been playing around a lot with different reserve actuation strengths with MocoInverse on graded walking conditions. Our validation involved minimising those residual forces below some threshold, and we luckily had some experimental emg, fascicle length and metabolic data to compare to. We'll p...

Hi Ross,
Increasing the optimal force of the reserve actuators seems to have fixed the issue - thank you!
Curious whether you have any advice when it comes to selecting a value for ModOpAddReserves?
Much appreciated,
Luke

Thank you for your reply, Pasha. I've found the problem difficult to diagnose. The only thing that's really improved the muscle-level outputs has been reducing the radius of those tibial gastroc. wrapping surfaces and just removing them altogether, so I can't really justify keeping them. Fortunately...

Hi Dan, Thanks for the suggestion. I believe that Dr. Miller was using an earlier version of Moco, in which wrapping surfaces were not supported altogether. In more recent versions, compatibility has been added for wrapping surfaces. Perhaps there's a bug here, or perhaps adjustments need to be made...

Hi all, I'm having a problem with muscle overactivating using MocoInverse and the high flex model by Adrian Lai during walking. Specifically, I'm finding that the gastrocnemii are overactive due to (I believe) their tibial wrapping surfaces, which in-turn is driving up the activation of the dorsifle...

That was it. Thanks, Nick.

Thanks for your reply, Nick! I had another look and realised that I misplaced a few values when I was compiling the states file - all is working now. One other query that I have, is that when I load the probed model with DGF muscles into the opensim GUI I receive warning messages about muscles/actua...

Hi all, Anyone have experience running the probe reporter (analyze tool) on their solution from moco? I've attempted with the controls and states (example files attached) generated by moco, which does output metabolics, but the outputted motion shows the model contorting. Is there anything that I mi...

Hi Grace,

Are any of the coordinates in your model locked? If so, try running it again with them unlocked or, if you want them to remain locked, add 'modelProcessor.append(ModOpReplaceJointsWithWelds())' to your code

Much appreciated. Thank you, Ross!