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Record W2322847264 · doi:10.2514/6.2009-5954

Analytical Solutions to Approximations of the Hamilton-Jacobi Equation Applied to Satellite Formation Flying

2009· article· en· W2322847264 on OpenAlexaff
Stefan LeBel, Christopher J. Damaren

Bibliographic record

VenueAIAA Guidance, Navigation, and Control Conference · 2009
Typearticle
Languageen
FieldEngineering
TopicSpacecraft Dynamics and Control
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsHamilton–Jacobi equationSatelliteApplied mathematicsComputer scienceMathematicsAerospace engineeringEngineering

Abstract

fetched live from OpenAlex

The Hamilton-Jacobi equations associated with the standard nonlinear H1 control and the nonlinear H1 loop shaping control problems are approximated using a Taylor series expansion. A new analytical solution is presented for the third-order approximation term. The proposed controller synthesis methods are applied to the problem of satellite formation ying and the eects of using dierent orders of approximation in the plant and controller dynamics are studied in simulation. It is found that, while the nonlinear controller demonstrates little improvement over the linear one, using even just a constant direct feedthrough loop shaping function can aect the time response of the closed-loop system signicantly.

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 machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.005
Threshold uncertainty score0.010

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0030.001

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 head0.015
GPT teacher head0.216
Teacher spread0.202 · 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 source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

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

Citations4
Published2009
Admission routes1
Has abstractyes

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Same venueAIAA Guidance, Navigation, and Control ConferenceSame topicSpacecraft Dynamics and ControlFrench-language works237,207