Adaptive Compliant Gripper

Gripper controller

Object to pick up

Ready — pick an object and attempt a lift.

Live grip-force / slip graph

Grip force Slip signal Crush limit Force needed to hold

Grip force

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Slip signal

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Found holding force (adaptive)

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Attempt log

Object	Mode	Force	Result

How it works

A traditional rigid gripper applies one pre-set clamp force no matter what it holds. That force is a compromise: too high for a delicate object (it crushes it), too low for a heavy or slippery one (its own weight overcomes the grip's friction and it slides free — a slip event — until it falls out).

The adaptive compliant gripper instead ramps force up from zero while its fingertip sensors watch for a slip signal — the object beginning to slide within the grasp. It keeps adding force only while slip is detected, and freezes the moment slip stops: that is the minimum force this specific object needs. A tracked maximum-safe-pressure limit stops the ramp before a fragile object's crush threshold is reached, so the same control loop finds a gentle force for the berry and a much firmer one for the dumbbell — two different answers from one strategy.

Rigid fixed-force — one preset force for every object: crushes the berry, is too weak to hold the dumbbell.
Adaptive compliant — ramps force while slip > 0, stops the instant slip settles, respecting the crush limit.
Slip signal — how much the object is currently sliding inside the grip relative to how much force would stop it.

Fingertip grip force Crush deformation Slip / drop

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