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Effector Lab

Benchmark

Four baseline fingers, one box

Each hand-designed entrant tries to lift a 90 x 40 x 120 mm box and hold it for 2 s. Same gripper, same controller, same 50 N grip: only the fingers differ.

  • PhysicsLocal run on a developer laptop, not a Nebius jobMuJoCo 3.15.0CPU executor1.06 s sim wall time12,080 steps
  • DesignHand-designed baseline, no model callHand-designed baseline entrant

t 00.00 / 00.00 s

Phase Settle

  1. Settle
  2. Descend
Straight

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Straight: held for 2.0 s. Peak lift 149.2 mm.

The straight entrant lifts and holds the box straight finger
Concave

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Concave: held for 2.0 s. Peak lift 149.2 mm.

The concave entrant lifts and holds the box concave finger
Hooked

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Hooked: held for 2.0 s. Peak lift 149.1 mm.

The hooked entrant lifts and holds the box hooked finger
Stock

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Stock: held for 2.0 s. Peak lift 149.1 mm.

The stock entrant lifts and holds the box stock finger

All lanes share one clock and one camera. The dashed square is the success height (object centre 100 mm above its resting height); the bar under each lane fills while the object stays above it and turns green at 2.0 s. The verdict appears when the scorer decides.

Scorer numbers

From the simulator's scorer, sampled every 10 ms.

LaneFingersOutcomePeak liftLongest holdSim stepsWall time
Straightthe straight entrant lifts and holds the boxStraightHeld 2.0 s149.2 mm2.01 s3,0200.26 s
Concavethe concave entrant lifts and holds the boxConcaveHeld 2.0 s149.2 mm2.01 s3,0200.29 s
Hookedthe hooked entrant lifts and holds the boxHookedHeld 2.0 s149.1 mm2.01 s3,0200.24 s
Stockthe stock entrant lifts and holds the boxStockHeld 2.0 s149.1 mm2.01 s3,0200.27 s

Task task_v1

Success
Centre rises 100 mm and stays 2.0 s, before 12 s
Grip force
50 N
Max opening
84 mm
Controller
Open loop, grasp-height setting k = 0.5

Phases

  1. Settle0.0 s to 0.3 s
  2. Descend0.3 s to 1.3 s
  3. Close1.3 s to 2.6 s
  4. Lift2.6 s to 4.1 s
  5. Hold4.1 s to the end