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exported equivalent COPI_0000261
Electric Generator
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000261
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
An electric generator is an assembly that bears the function of converting non-electric energy into electric energy
PT-BR
Um gerador elétrico é um conjunto que possui a função de converter energia não-elétrica em energia elétrica
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every electric generator is an assembly that has the function to convert non-electric energy into electric energy
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Definition]∀x (ElectricGenerator(x) ↔ Assembly(x) ∧ ∃f (ElectricEnergyGenerationFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: ElectricEnergyGenerationFunction]∀f (ElectricEnergyGenerationFunction(f) → ∀p (realizedIn(f,p) → ElectricEnergyGenerationProcess(p)) ∧ ∃p (ElectricEnergyGenerationProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Process participation signature]∀x ∀f ((ElectricGenerator(x) ∧ ElectricEnergyGenerationFunction(f) ∧ bearerOf(x,f)) → ∃m (MechanicalEnergyPortion(m) ∧ participatesIn(m,f)) ∧ ∃e (ElectricalEnergyPortion(e) ∧ participatesIn(e,f)) ∧ processType(f,ElectricalPowerConversion)) — Step 5: typed participants in the realising process
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix : <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix bfo: <http://purl.obolibrary.org/obo/> . @prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> . @prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> . @prefix skos: <http://www.w3.org/2004/02/skos/core#> . @prefix qudt: <http://qudt.org/schema/qudt/> . @prefix dcterms: <http://purl.org/dc/terms/> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix apv: <http://inf.ufrgs.br/ontologies/apv#> . ### COPI — Core Ontology for Petroleum Installations ### Class module: ElectricGenerator <https://www.inf.ufrgs.br/ontologies/copi> rdf:type owl:Ontology ; dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ; dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ; dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ; skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ; skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ; skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ; skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ; owl:versionInfo "1.1.0-104-g4d16eff" ; owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ; owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ; dcterms:creator "Nicolau Oyhenard dos Santos"@en ; dcterms:contributor "Cauã Antunes" ; dcterms:contributor "Haroldo Rojas" ; dcterms:contributor "Rafael Petry" ; dcterms:contributor "Régis Romeu" ; dcterms:contributor "Mara Abel" ; dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ; dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ; dcterms:license <https://creativecommons.org/licenses/by/4.0/> ; dcterms:created "2026-04-08"^^xsd:date ; dcterms:modified "2026-07-13"^^xsd:date ; apv:GlobalMinLanguageCoverage "en pt-br" ; apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ; apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" . iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ; apv:MinAnnotationLength 20 . ### Identity-giving function :ElectricEnergyGenerationFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :ElectricEnergyGenerationProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :ElectricEnergyGenerationProcess ] ; rdfs:label "electric energy generation function"@en ; rdfs:label "função de geração de energia elétrica"@pt-br . ### Process type :ElectricEnergyGenerationProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "electric energy generation process"@en ; rdfs:label "processo de geração de energia elétrica"@pt-br . :ElectricEnergyGenerationProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :MechanicalEnergyPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :ElectricalEnergyPortion ] . ### Equipment universal: ElectricGenerator :ElectricGenerator rdf:type owl:Class ; owl:equivalentClass [ rdf:type owl:Class ; owl:intersectionOf ( iof-core:Assembly [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :ElectricEnergyGenerationFunction ] ) ] ; rdfs:label "electric generator"@en ; rdfs:label "gerador elétrico"@pt-br ; iof-av:naturalLanguageDefinition "An electric generator is an assembly that bears the function of converting non-electric energy into electric energy"@en ; skos:definition "An electric generator is an assembly that bears the function of converting non-electric energy into electric energy"@en ; iof-av:naturalLanguageDefinition "Um gerador elétrico é um conjunto que possui a função de converter energia não-elétrica em energia elétrica"@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every electric generator is an assembly that has the function to convert non-electric energy into electric energy"@en ; iof-av:firstOrderLogicAxiom "∀x (ElectricGenerator(x) ↔ (Assembly(x) ∧ ∃f(ElectricEnergyGenerationFunction(f) ∧ bearerOf(x,f))))"@en ; # Disjointness: ElectricGenerator and ElectricMotor [] rdf:type owl:AllDisjointClasses ; owl:members ( :ElectricGenerator :ElectricMotor ) . # Disjointness: ElectricGenerator and Transformer [] rdf:type owl:AllDisjointClasses ; owl:members ( :ElectricGenerator :Transformer ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
ElectricEnergyGenerationFunction ⊑ DesignedFunction
Realized in
ElectricEnergyGenerationProcess ⊑ PlannedProcess
The identity-giving function is the conversion of non-electric energy (mechanical, thermal, chemical, etc.) into electric energy. This distinguishes electric generators from other energy conversion devices like motors (electric to mechanical) or transformers (electric to electric at different voltages).
2 Genus DeterminationDeterminação do Gênero
Assemblybfo:Object (BFO_0000030)
Looking at parent candidates, 'GENERATOR' would be more specific but is not enriched in our ontology. Electric generators are complex mechanical-electrical devices with multiple physically connected components (rotor, stator, bearings, housing, excitation system) that work together as a causally unified whole. They are assembled, maintained, and replaced as single units, making Assembly the appropriate genus.
3 Differentia SpecificaDiferença Específica
∃bearerOf.ElectricEnergyGenerationFunction

Bears the function of converting non-electric energy into electric energy

The differentia is the specific designed function that distinguishes electric generators from all other assemblies. This function captures the essential energy conversion characteristic that defines the concept across all implementation variants (AC/DC, synchronous/asynchronous, various prime movers).
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

These are the minimal essential components present in all electric generator implementations, from simple hand-crank generators to large turbine-driven units. Bearings, housings, and cooling systems are typically present but may vary significantly by subtype.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'MechanicalEnergyPortion', 'count': 1, 'constraints': 'rotational or linear motion from prime mover'}
OutputsSaídas
{'type': 'ElectricalEnergyPortion', 'count': 1, 'constraints': 'voltage and current suitable for intended application'}
TransformationTransformação
conversion of mechanical energy to electrical energy via electromagnetic induction
The signature captures the fundamental energy conversion process that defines electric generators - mechanical input energy is transformed to electrical output energy through electromagnetic principles.
Disjoint WithDisjunto com
electric motor transformer
C2: electric motor. C?: transformer [kind_ambiguous]. Electric motors have opposite energy flow direction (electric to mechanical), transformers convert electric to electric energy at same frequency, converters change electric energy characteristics without mechanical input
MetadataMetadados
COPI IDCOPI IDCOPI_0000261
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000261
StatusStatusexported
Axiom modeModoequivalent
CreatedCriado2026-04-16
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneroAssembly
Root classClasse raizAssembly
Axiom modeModoequivalent
FunctionFunçãoElectricEnergyGenerationFunction
ProcessProcessoElectricEnergyGenerationProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 2 sources
ISO 15926-4 ELECTRIC GENERATOR
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
CFIHOS electric generator
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.