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Record W4318262940 · doi:10.15760/etd.8129

Applying Biomimetic Passive Dynamics to a Quadruped Robot Leg

2022· dissertation· en· W4318262940 on OpenAlexfundno aff
Emma Krnacik

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEngineering
TopicRobotic Locomotion and Control
Canadian institutionsnot available
FundersDivision of Biological InfrastructureMedical Research CouncilCanadian Institutes of Health ResearchDeutsche ForschungsgemeinschaftUK Research and InnovationNational Science Foundation
KeywordsDamperKinematicsModular designRoboticsEngineeringModularity (biology)RobotMechanical systemSystem dynamicsComputer scienceControl engineeringPendulumSimulationControl theory (sociology)Artificial intelligenceMechanical engineeringControl (management)Physics

Abstract

fetched live from OpenAlex

The study of synthetic nervous systems is an emerging field within biomimetic robotics as an alternative to more classic control techniques. As the modeling of these nervous systems becomes more accurate, it is important to note that the nervous system and physical system co-evolved and continue to operate in an interdependent fashion. Many legged robots, including the existing quadruped in the AARL, have leg systems that may have similar geometrical properties to that of a mammal, but have significantly different dynamic properties. This paper presents a method for designing a limb so that the passive dynamics more accurately represent that of mammalian limbs. The desired limb dynamics were obtained by scaling kinematic rat leg data, and a gray-box optimization method was used to determine appropriate spring and damper properties, modeling the limb as a three-link pendulum with a spring-damper system at each joint. The new leg was designed with minimal changes to the current prototype, with the implementation of a modular spring and damper set, which allows the leg to achieve more biomimetic passive dynamics. This leg was built with the intent of comparing SNS control methods on legs with different dynamic scales (i.e. inertial vs overdamped). Future improvements to the spring/damper implementation will include increasing the modularity of the mechanical design in order to more easily change the leg dynamic properties.

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 categoriesMeta-epidemiology (narrow), Insufficient 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: Empirical · Consensus signal: none
Teacher disagreement score0.849
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)0.0030.000

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 head0.005
GPT teacher head0.226
Teacher spread0.221 · 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
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

Citations0
Published2022
Admission routes1
Has abstractyes

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