ISA 5.1 symbol
exported equivalent COPI_0000234
Controller
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000234
Generated onGerado em 2026-04-15
Natural Language DefinitionDefinição em Linguagem Natural
EN
A controller is an instrument that bears a control function, automatically regulating a controlled variable by measuring it, comparing with a reference value, and generating output signals to reduce deviation.
PT-BR
Um controlador é um instrumento que possui uma função de controle, regulando automaticamente uma variável controlada ao medi-la, comparar com um valor de referência e gerar sinais de saída para reduzir o desvio.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every controller is an instrument that has the function to control a process variable by automatic feedback regulation
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Definition]∀x (Controller(x) ↔ Instrument(x) ∧ ∃f (ControlFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: ControlFunction]∀f (ControlFunction(f) → ∀p (realizedIn(f,p) → ControlProcess(p)) ∧ ∃p (ControlProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Process participation signature]∀x ∀f ((Controller(x) ∧ ControlFunction(f) ∧ bearerOf(x,f)) → ∃m1 (ProcessVariable(m1) ∧ participatesIn(m1,f)) ∧ ∃m2 (ReferenceSignal(m2) ∧ participatesIn(m2,f)) ∧ ∃e (ControlSignal(e) ∧ participatesIn(e,f)) ∧ processType(f,MeasurementTransduction)) — 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: Controller <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 :ControlFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :ControlProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :ControlProcess ] ; rdfs:label "control function"@en ; rdfs:label "função de controle"@pt-br . ### Process type :ControlProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "control process"@en ; rdfs:label "processo de controle"@pt-br . :ControlProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :ProcessVariable ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :ReferenceSignal ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :ControlSignal ] . ### Equipment universal: Controller :Controller rdf:type owl:Class ; owl:equivalentClass [ rdf:type owl:Class ; owl:intersectionOf ( :Instrument [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :ControlFunction ] ) ] ; rdfs:label "controller"@en ; rdfs:label "controlador"@pt-br ; iof-av:naturalLanguageDefinition "A controller is an instrument that bears a control function, automatically regulating a controlled variable by measuring it, comparing with a reference value, and generating output signals to reduce deviation."@en ; skos:definition "A controller is an instrument that bears a control function, automatically regulating a controlled variable by measuring it, comparing with a reference value, and generating output signals to reduce deviation."@en ; iof-av:naturalLanguageDefinition "Um controlador é um instrumento que possui uma função de controle, regulando automaticamente uma variável controlada ao medi-la, comparar com um valor de referência e gerar sinais de saída para reduzir o desvio."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every controller is an instrument that has the function to control a process variable by automatic feedback regulation"@en ; iof-av:firstOrderLogicAxiom "∀x(Controller(x) ↔ Instrument(x) ∧ ∃f(ControlFunction(f) ∧ bearerOf(x,f)))"@en ; # Disjointness: Controller and Indicator [] rdf:type owl:AllDisjointClasses ; owl:members ( :Controller :Indicator ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
ControlFunction ⊑ DesignedFunction
Realized in
ControlProcess ⊑ PlannedProcess
All sources define controller by its control capability - measuring a controlled variable, comparing with reference/setpoint, and generating output signals to reduce deviation. This automatic regulation function is what makes a controller a controller, regardless of implementation technology.
2 Genus DeterminationDeterminação do Gênero
Instrumentbfo:Object (BFO_0000030)
Controllers are instrumentation devices that measure, compare, and output control signals. While 'INSTRUMENTATION FUNCTION' appears in iso15926 and 'instrument equipment' in cfihos parent candidates, the physical genus should be 'Instrument' - a class of measurement/control devices. Instrument is not yet enriched but is the correct domain superclass for control instrumentation.
3 Differentia SpecificaDiferença Específica
∃bearerOf.ControlFunction

A controller is distinguished from other instruments by bearing a control function that automatically regulates a controlled variable through feedback comparison.

The control function - automatic regulation through feedback - is the minimal differentia that distinguishes controllers from other instruments that may measure but do not actively control.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

These three elements represent the universal control loop components: measure, compare, output. Implementation varies (electronic, pneumatic, hydraulic) but these functional elements are always present.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'ProcessVariable', 'count': 1, 'constraints': 'measured controlled variable'}, {'type': 'ReferenceSignal', 'count': 1, 'constraints': 'setpoint or reference value'}
OutputsSaídas
{'type': 'ControlSignal', 'count': 1, 'constraints': 'manipulates final control element'}
TransformationTransformação
information processing - compares inputs and generates control output
Controllers have a characteristic signature: measured variable input, reference input, control signal output. The transformation is information processing rather than material/energy conversion.
Disjoint WithDisjunto com
Indicator
C2: Indicator. Controllers actively generate control outputs, making them incompatible with purely passive or display-only instruments
MetadataMetadados
COPI IDCOPI IDCOPI_0000234
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000234
StatusStatusexported
Axiom modeModoequivalent
CreatedCriado2026-04-15
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13