exported
necessary
rotary actuator
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Rotaryactuator
Generated on 2026-05-04
Natural Language Definition
EN
A rotary actuator is an actuator that causes rotary motion by converting control signals into controlled rotational mechanical output.
PT-BR
Um atuador rotativo é um atuador que causa movimento rotativo convertendo sinais de controle em saída mecânica rotacional controlada.
Formal Axioms
Semi-formal (Aristotelian)
Every rotary actuator is an actuator that participates in rotary motion processes.
First-Order Logic Theory
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▸ Stored override
∀x (RotaryActuator(x) → Actuator(x) ∧ ∃p (RotaryMotionProcess(p) ∧ participatesIn(x,p)))
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: RotaryActuator
<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" ;
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 "2026-10-08"^^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
:COPI_0000407 rdf:type owl:Class ; # ActuationFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000408 # ActuationProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000408 # ActuationProcess
] ;
rdfs:label "actuation function"@en ;
rdfs:label "função de atuação"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in an ActuationProcess and that consists in the capacity to convert an input energy signal (electrical, pneumatic, or hydraulic) into controlled mechanical motion for operating other equipment components."@en ;
skos:definition "A DesignedFunction that is realized in an ActuationProcess and that consists in the capacity to convert an input energy signal (electrical, pneumatic, or hydraulic) into controlled mechanical motion for operating other equipment components."@en .
### Process type
:COPI_0000408 rdf:type owl:Class ; # ActuationProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "actuation process"@en ;
rdfs:label "processo de atuação"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which an actuator converts input energy into controlled mechanical motion to operate valves, dampers, or other equipment requiring remote or automated positioning."@en ;
skos:definition "A PlannedProcess in which an actuator converts input energy into controlled mechanical motion to operate valves, dampers, or other equipment requiring remote or automated positioning."@en .
:COPI_0000408 # ActuationProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000045 # ControlSignal
] .
### Equipment universal: RotaryActuator
:COPI_0000340 rdf:type owl:Class ; # RotaryActuator
rdfs:subClassOf :COPI_0000207 ; # Actuator
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000407 # ActuationFunction
] ;
rdfs:label "rotary actuator"@en ;
rdfs:label "atuador rotativo"@pt-br ;
iof-av:naturalLanguageDefinition "A rotary actuator is an actuator that causes rotary motion by converting control signals into controlled rotational mechanical output."@en ;
skos:definition "A rotary actuator is an actuator that causes rotary motion by converting control signals into controlled rotational mechanical output."@en ;
iof-av:naturalLanguageDefinition "Um atuador rotativo é um atuador que causa movimento rotativo convertendo sinais de controle em saída mecânica rotacional controlada."@pt-br ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive type based on rotary motion mechanism. Under OWA, providing sufficient conditions could lead to over-classification where any equipment that happens to produce rotary motion (motors, turbines, etc.) might be incorrectly classified as rotary actuators. The rotary motion differentia is necessary but requires domain expert validation to confirm it is sufficient for the actuator equipment category."@en ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000058 ] ;
rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000196 ; owl:someValuesFrom :COPI_0000059 ] ;
skos:definition "[ISO 15926-4] A <ROTARY ACTUATOR> is an <ARTEFACT> and an <ACTUATOR> causing a rotary motion"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
ActuationFunction
⊑ DesignedFunction
Realized in
ActuationProcess
⊑ PlannedProcess
Reusing ActuationFunction from the already-enriched 'actuator' class since rotary actuator is a constructive subtype of actuator with the same identity-giving function - the function to convert control signals into mechanical motion.
2
Genus Determination
Actuator
The ISO 15926-4 definition explicitly states 'A ROTARY ACTUATOR is an ACTUATOR', and 'actuator' is already enriched in our ontology as an Assembly with ActuationFunction. This is the most specific appropriate superclass.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
No component terms are provided in the Known Component Terms list, and the source definition is too high-level to identify specific necessary parts beyond what the genus actuator would already provide. Any specific parts (motor, gears, output shaft) would be subtype-specific depending on the particular rotary actuator design.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
ControlSignal
— control signal - electrical, pneumatic, or hydraulic
Outputs (O)
—
Transformation (T)
input control signal and energy converted into controlled rotational motion with specified torque and angular positioning
The rotary actuator takes control signals and converts them into mechanical rotational output. This signature distinguishes it from pumps/compressors (which act on fluids) and from linear actuators (which produce linear rather than rotational mechanical output).
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Constructive type based on rotary motion mechanism. Under OWA, providing sufficient conditions could lead to over-classification where any equipment that happens to produce rotary motion (motors, turbines, etc.) might be incorrectly classified as rotary actuators. The rotary motion differentia is necessary but requires domain expert validation to confirm it is sufficient for the actuator equipment category.
Cross-Standard Observations
Only one source (ISO 15926-4) provides a definition. The definition is concise but clear, focusing on the rotary motion characteristic as the key differentiator from other actuator types.
