Add contact force as reflex

SCONE is a software tool for predictive simulations of biomechanical movement. It uses OpenSim for modeling and simulation, and performs optimization using various control strategies, including feed-forward control, proprioceptic feedback control, and bal
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vahid F
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Joined: Mon Jul 23, 2018 8:02 am

Add contact force as reflex

Post by vahid F » Thu Sep 29, 2022 3:00 am

Hi SCONE users,

I'm wondering if we can use contact force as reflex in muscles. If it is doable, can you help me how to do that?

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Thomas Geijtenbeek
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Re: Add contact force as reflex

Post by Thomas Geijtenbeek » Thu Sep 29, 2022 5:56 am

This is definitely possible, but a new reflex type would have to be implemented in SCONE.

At this moment, contact force is only available for state transition in the GaitStateController.
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vahid F
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Re: Add contact force as reflex

Post by vahid F » Wed Oct 05, 2022 3:17 am

Hi Thomas,

Thank you for your response,
Is it possible to implement it using script controller? Do you have any comment regarding the implementation?

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Thomas Geijtenbeek
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Re: Add contact force as reflex

Post by Thomas Geijtenbeek » Wed Oct 05, 2022 5:46 am

It is definitely possible to do this via a ScriptController, the most difficult part is simulating the neural delay. Without neural delay, it is rather straightforward to do, using LuaBody:contact_force() and LuaMuscle:add_input().

The script tutorials should contain enough information to get you started (along with the reference manual):

https://scone.software/doku.php?id=tutorials:script
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