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[OpenArm] Joint state jitter and low-speed oscillation for builders integrators (advanced)

How do you tell whether OpenArm low-speed jitter is a sensing problem, a timing problem, a mechanical problem, or a gain problem?

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An annoying OpenArm failure mode shows up only at low speed: joints appear mostly correct, but motion becomes jittery, small oscillations appear, and confidence in teleop or precision tasks drops fast.

How are you diagnosing joint state jitter and low-speed oscillation on OpenArm?

Please share how you separate sensing noise, timestamp instability, mechanical backlash, and gain tuning problems before changing too many things at once.

If you reply, include one exact oscillation symptom and one exact measurement or tuning step that moved the diagnosis forward.

Related troubleshooting path: Mit Control Gains · Motion Planning Fails Because Collision Model Does Not Match Real Geometry

Module: OpenArm · Audience: builders-integrators · Type: question

Tags: openarm, jitter, oscillation, control

Comment 1

The most reusable answers here explain what exposed the issue first: logs, slow-motion video, or operator feel.

Comment 2

If you use one simple low-speed benchmark to reveal the problem, share it. Searchers often need exactly that reproducible motion.

Comment 3

Separating timing noise from gain issues early saves hours. If you found a fast discriminator, it belongs in this thread.

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Quick FAQ

How do advanced teams isolate root cause quickly?

Use synchronized logs and one-variable-at-a-time replay around "[OpenArm] Joint state jitter and low-speed oscillation for builders integrators (advanced)" to separate mechanical, model, and control contributors.

python tools/log_signals.py --task repro_case --duration 120
python tools/analyze_trace.py --input trace.json --report summary.md
What should gate production release?

Use measurable thresholds from replayed stress cases, and block deployment if any fail under warm-state conditions.

Can I copy these commands as-is?

Use them as a checklist template first. Confirm interface names, fixture IDs, and safety conditions in your own cell before execution.