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Implement MuJoCo Backlash #1590

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Implement MuJoCo Backlash #1590

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JonasHolz
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Why? What?

Implement backlash for our MuJoCo model.

Fixes #1549

ToDo / Known Issues

  • Backlash for hip_yaw is broken
  • Robot starts walking forward slowly in interactive viewer script.

How to Test

Increase backlash range to see clearer results.

@JonasHolz JonasHolz added this to the RL Walking milestone Jan 22, 2025
@JonasHolz JonasHolz enabled auto-merge January 22, 2025 16:12
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@oleflb oleflb left a comment

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one little detail

@@ -99,7 +101,8 @@

<inertial pos="-0.00001 0 -0.02742" mass="0.07842"
fullinertia="74992.98e-9 75999.99e-9 5533.73e-9 1.57e-9 -18.34e-9 -52.95e-9" />
<joint name="head.yaw" axis="0 0 1" range="-119.5 119.5" limited="true" />
<joint name="head.yaw" axis="0 0 1" range="-119.5 119.5" class="nao_joint" />
<!-- <joint name="head.yaw.backlash" axis="0 0 1" range="0 0.001" limited="true" /> -->
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why is this excluded?

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Add Backlash to Nao Model
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