Event

Released 2D four-link swing-up and hold benchmark, 32/32 passed

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The corbensorenson/cartpole repository released 2d-cartpole-4-link-v1, an independent benchmark and evidence package for spatial swing-up and hold of a 2D cart four-link system. Its reported results are 32/32 passes on swing-up and hold across 32 fresh noisy 3D initial states, plus a nominal state and a separate development cohort. Each episode of this benchmark lasts 30 seconds with at least 7.22 seconds upright; no joint motors, locking, hidden supports, or ground contact are used during runs, and control uses full-state classical trajectory feedback plus an upright LQR, with the repository explicitly not claiming the use of learned policies. The repository also limits these to empirical evidence about reset noise, and states they do not represent resistance to arbitrary disturbances, indefinite stability, or real-time hardware validation.