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Record W1519360556 · doi:10.1007/0-8176-4404-0_20

Control Loops in RTLinux

2005· book-chapter· en· W1519360556 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

VenueBirkhäuser Boston eBooks · 2005
Typebook-chapter
Languageen
FieldComputer Science
TopicReal-Time Systems Scheduling
Canadian institutionsTellabs (Canada)
Fundersnot available
KeywordsComputer scienceSchematicController (irrigation)Embedded systemSoftwareReuseScheduling (production processes)Operating systemEngineeringElectrical engineering

Abstract

fetched live from OpenAlex

Control loops have the schematic form while (active) {wait for trigger; do something to a device;} and they are the building blocks of most realtime programs. Control loops in RTLinux can be just a few lines of code or can involve the synchronized performance of thousands of loops. People have used RTLinux for some of the most demanding real-time applications as well as for quick experiments. Whether you are developing a 100-microsecond duty cycle magnetic bearing controller [3], a jet engine control and hardware-in-loop simulation (as did Pratt & Whitney), or a simple robotic controller using a sound card as an improvised analog-to-digital (A/D) device (several Japanese universities), you need the same ingredients, the same principles, and a good understanding of the device or plant you are controlling.This chapter covers basic control loop design and emphasizes issues of moving data and control information between the real-time loop and the outside world. We provide abbreviated treatment of scheduling and synchroniza- tion. Our experience is that pure priority scheduling1 satisfies 90% of all requirements and slot schedulers2 satisfy most of the rest. Both are built into RTLinux. Synchronization is not hard if a few basic rules are followed [8] and proper attention is paid to making the design robust. The RTLinux programming model is most effective when engineers can properly modularize their programs and reuse the powerful software found in Linux or BSD.

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 categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Other · Consensus signal: Other
Teacher disagreement score0.950
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0020.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0000.002

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 head0.016
GPT teacher head0.220
Teacher spread0.204 · 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