setpoint value expression

IRI: https://spec.industrialontologies.org/ontology/construct/SetpointValueExpression

Defined In: https://spec.industrialontologies.org/ontology/biopharma/BiopharmaParameter/

SubClass Of: value expression

Class Hierarchy

owl:Thing › bfo:entity › bfo:continuant › bfo:generically dependent continuant › information content entity › value expression › setpoint value expression

Definition

value expression which is a prescribed value that a process parameter should have at a particular time point or during a particular time interval of some planned process

Explanatory Notes

The setpoint represents the value of a physical condition that a control system aims to achieve and maintain. The set point is used by the control system as a reference for comparison against the actual measured value of the process parameter. Specifically, a control system performs regulation by actuating one or more final control devices to modify process parameters, thereby driving the process variable toward the set point. Representation of this control behavior will be included in a future version of the ontology

Examples

  • for a residential dwelling temperature control process, the set point might be 72 degrees Fahrenheit during the day and 68 degrees Fahrenheit during the day; 250 rpm as the setpoint for agitation speed in a formulation tank; 20 minutes as the setpoint for residence time in the protein purification chromatography step

Synonyms

  • process parameter target value
  • setpoint

Primitive Class

This class is declared primitive and it does not have necessary and sufficient condiftions defined.

Primitive Rationale

There are insufficient constructs to create necessary and sufficient conditions.

Formal Axioms

First-Order Logic Axioms 

SetpointValueExpression(x) → ValueExpression(x) ∧ ∃y (ProcessParameterSpecification(y) ∧ continuantPartOfAtAllTimes(x, y))

Semi-Formal Natural Language Axioms

if x is a ‘setpoint value expression’ then x is a ‘value expression’ and x is a ‘continuant part of at all times’ some ‘process parameter specification’

Description Logic

constr:SetpointValueExpression ⊑ constr:ValueExpression

constr:SetpointValueExpression ⊑ ∃ bfo:continuant_part_of_at_all_times .constr:ProcessParameterSpecification

SubClassOf: constr:ValueExpression

SubClassOf: bfo:continuant_part_of_at_all_times some constr:ProcessParameterSpecification