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Reconfigurable main‐arm for assembly of all revolute‐only kinematically simple branches

2000· article· en· W4237702775 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueJournal of Robotic Systems · 2000
Typearticle
Languageen
FieldEngineering
TopicInnovations in Concrete and Construction Materials
Canadian institutionsUniversity of Victoria
Fundersnot available
KeywordsRevolute jointKinematicsJoint (building)Control reconfigurationSimple (philosophy)PerpendicularEngineeringComputer scienceStructural engineeringMathematicsGeometryMechanical engineeringConstraint (computer-aided design)PhysicsClassical mechanics

Abstract

fetched live from OpenAlex

Within previous work by Podhorodeski and Pittens,a class of kinematically simple (KS) joint layouts was defined for spatial serial joint-assemblies consisting of revolute joints only. The identified KS class of layouts was comprised of main-arms with three successively parallel and/or perpendicular revolute joints and end located spherical joint groups. Arguments of degeneracy and kinematic equivalency can be used to demonstrate that only five unique main-arm layouts belong to the KS class. Within the current work, the design of a reconfigurable main-arm (RMA) allowing the construction of all of the KS branches is examined. Sufficient joints are included within the RMA to allow, by the locking of certain joints and the freeing (actuation) of others, the kinematic attributes of each of the unique KS main-arm layouts to be acquired. It is concluded that five successively perpendicular revolute joints are required within the RMA to allow such reconfiguration. Inverse kinematic solutions are presented for each of the five layouts. Potential RMA applications, use of the RMA for kinematically redundant layouts, and an RMA prototype are discussed. ©2000 John Wiley & Sons, Inc.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.383
Threshold uncertainty score0.450

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.019
GPT teacher head0.245
Teacher spread0.226 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it