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Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Wed Sep 10, 2025 7:32 pm
by carol38
From what I've seen: Vision-based grasp confidence estimation (predicting success before attempting a grasp) and tactile-based confirmation (confirming after contact) are complementary rather than competing - vision helps you choose a grasp, tactile tells you if it actually worked.

Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Tue Sep 16, 2025 5:24 pm
by mia.weber
Just to be precise about one thing: Figure's fourth-generation Dexterous Hand (on Figure 02/03) reportedly offers 16 degrees of freedom per hand with sensors integrated into each finger, aimed at fine force control tasks like handling small electronic components without crushing them.

Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Sat Sep 20, 2025 8:16 am
by williams84
@mia.weber Slight correction, though the overall point stands: Compliant wrists that absorb impact during a bad approach or misjudged contact reduce mechanical stress on the whole arm, which matters a lot for long-term reliability even though it's a less visible feature than the hand itself. Payload-to-hand-weight ratio varies a lot across current dexterous hands, and it's a meaningful tradeoff - more DoF and finer sensing generally means more actuators and mass in the hand itself, which eats into the arm's usable payload budget.

Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Tue Sep 30, 2025 10:12 am
by scott21
Respectfully, I think this undersells it a bit. Figure's fourth-generation Dexterous Hand (on Figure 02/03) reportedly offers 16 degrees of freedom per hand with sensors integrated into each finger, aimed at fine force control tasks like handling small electronic components without crushing them. Compliant wrists that absorb impact during a bad approach or misjudged contact reduce mechanical stress on the whole arm, which matters a lot for long-term reliability even though it's a less visible feature than the hand itself.

Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Thu Oct 02, 2025 5:22 pm
by tariqlarsen
Related question - Figure's fourth-generation Dexterous Hand (on Figure 02/03) reportedly offers 16 degrees of freedom per hand with sensors integrated into each finger, aimed at fine force control tasks like handling small electronic components without crushing them.

Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Tue Oct 14, 2025 3:44 am
by choi98
@tariqlarsen Side note that might be relevant: Underactuated hands (fewer actuators than joints, using mechanical coupling to shape the grasp) are a reasonable engineering compromise for robust power grasps on a budget, but they generally can't do fine in-hand manipulation the way a fully actuated hand can.

Re: What's underrated: grasp force control precision or grasp planning speed?

Posted: Tue Oct 21, 2025 5:05 am
by sarah.santos3
@choi98 I'd take that specific number with a grain of salt, honestly. Object occlusion by the robot's own hand during the final approach to a grasp is a common and annoying perception problem - the closer the hand gets to a good grasp position, the more it blocks the camera's view of exactly what it's about to grab. A lot of the manipulation shown in production demos still leans heavily on teleoperation, particularly for anything involving fine force control or novel objects - autonomous grasp success rates on genuinely unstructured, previously-unseen clutter are still well below what teleoperation can achieve.