MétaCan
Menu
Back to cohort
Record W2991524930 · doi:10.24385/lincoln.24326056

Advanced Robust Control Design For High Speed Tilting Trains

2018· dissertation· en· W2991524930 on OpenAlex
Fazilah Hassan

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.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueLincoln Repository (University of Lincoln) · 2018
Typedissertation
Languageen
FieldEngineering
TopicRailway Systems and Energy Efficiency
Canadian institutionsnot available
Fundersnot available
KeywordsTrainTilt (camera)EngineeringContext (archaeology)Track (disk drive)Automotive engineeringComputer scienceSimulationMechanical engineering

Abstract

fetched live from OpenAlex

Tilting is a worldwide accepted technology concept in railway transportation. Theparticular benefit from tilting trains use is reduction in journey times due to speedincrease on track corners (while maintaining acceptable passenger comfort), a pointthat facilitates improved customer service. An additional benefit is cost effectivenessdue to the train running on existing rail tracks. Many countries opted to using tiltingtrains as means of fast public transportation (UK, USA, Canada, Sweden, Norway,Switzerland, Germany, Japan).The industrial norm of tilting high speed trains is that of precedence tilt wherebypreview tilt enabling signals are used to provide the required information to thevehicles (it can also use a combination of track database information or GPS but theconcept is the same). Precedence tilt tends to be complex (mainly due to the signalinterconnections between vehicles and the advanced signal processing required formonitoring). Research studies of earlier than precedence schemes,i.e. the so-callednulling-type schemes whereby local-per-vehicle signals are used to provide tilt (adisturbance rejection-scheme although tends to suffer from inherent delays in thecontrol feedback), are still an important research aim due to the simple natureand most importantly due to the more straightforward fault detection compared toprecedence. Use of nulling-type tilt has been supported by recent studies in thiscontext.The research presented in this thesis highly contributes to simplified single-inputsingle-output robust tilt control using the simplest rail vehicle tilt structure, i.e. anActive Anti-Roll Bar. Proposed are both robust conventional (integer-type) controlapproaches and non-conventional (non-integer) schemes with a rigorous investigation of the difficult to achieve deterministic/stochastic tilt trade-off. Optimizationhas been used extensively for the designs. A by-product of the work is the insightprovided into the relevant tilting train model Non Minimum Phase characteristicsand its link to uncertainty for control design. Work has been undertaken usingMatlab, including proper assessment of tilt ride quality considerations.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.248
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0010.000
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 head0.010
GPT teacher head0.183
Teacher spread0.173 · 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