exported
necessary
pneumatic actuator
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Pneumaticactuator
Generated on 2026-04-16
Natural Language Definition
EN
A pneumatic actuator is an actuator that operates using pneumatic power.
PT-BR
Um atuador pneumático é um atuador que opera usando energia pneumática.
Formal Axioms
Semi-formal (Aristotelian)
Every pneumatic actuator is an actuator that has operating medium some pneumatic power.
First-Order Logic Theory
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▸ Stored override
∀x(PneumaticActuator(x) → Actuator(x) ∧ ∃y(PneumaticPower(y) ∧ hasOperatingMedium(x,y)))
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: PneumaticActuator
<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 .
### 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 .
:COPI_0000408 # ActuationProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000386 # PortionOfAir
] .
### Equipment universal: PneumaticActuator
:COPI_0000327 rdf:type owl:Class ; # PneumaticActuator
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 "pneumatic actuator"@en ;
rdfs:label "atuador pneumático"@pt-br ;
iof-av:naturalLanguageDefinition "A pneumatic actuator is an actuator that operates using pneumatic power."@en ;
skos:definition "A pneumatic actuator is an actuator that operates using pneumatic power."@en ;
iof-av:naturalLanguageDefinition "Um atuador pneumático é um atuador que opera usando energia pneumática."@pt-br ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive type where pneumatic mechanism is necessary but may not be sufficient under OWA. Specialized pneumatic equipment (pneumatic tools, pneumatic cylinders) might have pneumatic power but should not be classified as actuators without additional validation of their actuation role in control systems."@en ;
skos:definition "[ISO 15926-4] A <PNEUMATIC ACTUATOR> is an <INSTRUMENTATION ITEM> and a <CONTROLLED ACTUATOR> that is intended to be operated by pneumatic power"@en ;
skos:definition "[CFIHOS] An actuator that is intended to be operated by pneumatic power."@en ;
skos:definition "[POSC Caesar] An actuator that is intended to be operated by pneumatic power."@en .
# Disjointness: PneumaticActuator and ElectricActuator
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000327 :COPI_0000260 ) . # PneumaticActuator, ElectricActuator
# Disjointness: PneumaticActuator and HydraulicActuator
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000327 :COPI_0000298 ) . # PneumaticActuator, HydraulicActuator
Axiomatization Decision Log
1
Identity-Giving Function
Function class
ActuationFunction
⊑ DesignedFunction
Realized in
ActuationProcess
⊑ PlannedProcess
Reusing the ActuationFunction from the already-enriched 'actuator' class, as pneumatic actuator is a subtype that shares the same identity-giving function but differs in power source mechanism.
2
Genus Determination
Actuator
The parent_candidates list shows 'actuator' as already enriched in our ontology. All three source definitions clearly position pneumatic actuator as a subtype of actuator, differing only in the power source (pneumatic vs. electric, hydraulic, etc.).
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These parts are universally required for pneumatic operation - pressure conversion mechanism, air supply interface, and pressure containment - regardless of linear/rotary subtype.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfAir
— pressurized above atmospheric
Outputs (O)
—
Transformation (T)
pneumatic to mechanical energy conversion
Converts compressed air energy into mechanical work (force/torque and displacement). The specific motion type (linear/rotary) varies by subtype but all share this energy transformation signature.
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 where pneumatic mechanism is necessary but may not be sufficient under OWA. Specialized pneumatic equipment (pneumatic tools, pneumatic cylinders) might have pneumatic power but should not be classified as actuators without additional validation of their actuation role in control systems.
Disjointness Axioms
electric actuator
hydraulic actuator
C1: electric actuator, hydraulic actuator. Incompatible power source signatures - pneumatic vs. electric vs. hydraulic operation are mutually exclusive mechanisms
Cross-Standard Observations
All three standards (ISO 15926, CFIHOS, POSC Caesar) provide consistent definitions focusing on pneumatic power operation. ISO 15926 adds hierarchical context (INSTRUMENTATION ITEM, CONTROLLED ACTUATOR) while others focus on the essential pneumatic characteristic.
