Pith Number

pith:XCUWFTLJ

pith:2025:XCUWFTLJOFH22WZ53YBOQ7PTMW

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Development of a planar cable-driven parallel robot for submillimeter and terahertz beam mapping measurements

Abigail T. Crites, Anthony D. Turner, Audrey Dunn, Benjamin Vaughan, Chao-Te Li, Charles M. Bradford, Clifford Frez, Daniel P. Marrone, Dongwoo T. Chung, Evan C. Mayer, Guochao Sun, Ian N. Lowe, Isaac Trumper, James J. Bock, Jonathon Hunacek, King Lau, Michael Zemcov, Nicholas Emerson, Ryan P. Keenan, Ta-Shun Wei, Tzu-Ching Chang, Victoria L. Butler, Yun-Ting Cheng

A cable-driven parallel robot positions thermal sources for beam mapping with 2.7 mm RMSE accuracy over a 400 mm workspace.

arxiv:2511.09446 v2 · 2025-11-12 · astro-ph.IM

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\pithnumber{XCUWFTLJOFH22WZ53YBOQ7PTMW}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We achieve an in-plane absolute payload position error of 2.7 mm (RMSE) over a ∼400 mm × 400 mm workspace and an in-plane repeatability of 0.81 mm, offering substantial improvements in accuracy and speed over traditional handheld techniques.

C2weakest assumption

The non-contact computer-vision method built on OpenCV accurately tracks the payload position with better than 1.0 mm accuracy under the actual lighting and motion conditions of the TIME optical relay setup.

C3one line summary

A cable-driven parallel robot for beam mapping achieves 2.7 mm RMSE absolute position error and 0.81 mm repeatability over a 400 mm workspace using computer-vision tracking.

References

3 extracted · 3 resolved · 1 Pith anchors

[1] Line-Intensity Mapping: 2017 Status Report 2009 · arXiv:1709.09066

[2] A Platform with Six Degrees of Freedom 2018

[3] Error Analysis by Kinetics for Parallel-Wire Driven System Using Approximated Inverse Kinematics 1984

Cited by

1 paper in Pith

TIME Commissioning Observations: II. On-sky Characterization and the 2D Map Data Processing Pipeline

Receipt and verification

First computed	2026-07-03T01:17:53.986773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8a962cd69714fad5b3dde02e87df36592f9dcd15b95c28e9919a2370d0cfa05

Aliases

arxiv: 2511.09446 · arxiv_version: 2511.09446v2 · doi: 10.48550/arxiv.2511.09446 · pith_short_12: XCUWFTLJOFH2 · pith_short_16: XCUWFTLJOFH22WZ5 · pith_short_8: XCUWFTLJ

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XCUWFTLJOFH22WZ53YBOQ7PTMW \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b8a962cd69714fad5b3dde02e87df36592f9dcd15b95c28e9919a2370d0cfa05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2e0e2c58ce8b66c88cac6d59c69f28bd1dc2bf3ba0da6a608523e54a07580a4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-11-12T15:59:43Z",
    "title_canon_sha256": "20e4f505d84ef23c2268341cfb71f55c3db663ba0e856aaa7bb37108f78d6c7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.09446",
    "kind": "arxiv",
    "version": 2
  }
}