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Record W1549681044 · doi:10.5772/4890

Joint Torque Sensory in Robotics

2006· book-chapter· en· W1549681044 on OpenAlexaff
Farhad Aghili

Bibliographic record

Venuenot available
Typebook-chapter
Languageen
FieldEngineering
TopicRobot Manipulation and Learning
Canadian institutionsCanadian Space Agency
Fundersnot available
KeywordsJoint (building)Artificial intelligenceRoboticsTorqueSensory systemComputer sciencePhysical medicine and rehabilitationPsychologyNeuroscienceMedicineEngineeringRobotPhysicsStructural engineering

Abstract

fetched live from OpenAlex

Motivated by the need for accurate joint torque sensing in robots, we designed a new torque sensor, based on the hollow hexaform geometry. Its key features were its extremely high sti ness and its insensitivity to the set of support forces and moments which persist in a robot joint. These features permit to mount the sensor directly in the joints of a robot manipulator leading to accurate joint torque sensing and to a compact and modular design. The structure of the sensor also exhibits strain concentration to torsion loads which maximizes the sensitivity to torsion without sacrificing torsional sti ness. Other design issues such as practical shape consideration, material properties and overloading also considered. The sensor geometry was analyzed and optimized using the finite element method. The sensor was tested extensively to confirm its design goals, and is well suited as a torque-sensing device in robots or other industrial high performance motion control applications. A quantitative comparison with di erent types of sensors is shown in table 1. The table indicates that our sensor's performance characteristics compare very favorably. The applications of adaptive control in conjunction with joint-torque sensory feedback was used for dynamic motion control of manipulators. The control system had the advantages of requiring neither the computation of link dynamics nor the precise measurement of joint torques, i.e., the torque sensor's gains and o sets are unknown to the controller. The adaptive controller could also tune all the joint parameters including the rotor inertia, twist

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.

How this classification was reachedexpand

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.384
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
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)0.0010.000

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 head0.034
GPT teacher head0.204
Teacher spread0.170 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designSimulation or modeling
Domainnot available
GenreOther

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations5
Published2006
Admission routes1
Has abstractyes

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