HVAC ACTUATOR WITH INDUCTIVE POSITION SENSING

An actuator (500) in a HVAC system includes an inductive sensor (526), a conductive target (532), and a controller (528). The conductive target (532) has multiple different portions that become aligned with the inductive sensor (526) as a position of the actuator (500) changes. Each of the multiple...

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Bibliographische Detailangaben
Hauptverfasser:	STREBE, Cory C, WEISS, Kevin A, JENKS, Russell T, ROMANOWICH, Gary A, ALEXANDER, Robert K
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BLASTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEATING LIGHTING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS RANGES REGULATING TARIFF METERING APPARATUS TESTING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	An actuator (500) in a HVAC system includes an inductive sensor (526), a conductive target (532), and a controller (528). The conductive target (532) has multiple different portions that become aligned with the inductive sensor (526) as a position of the actuator (500) changes. Each of the multiple different portions have a different inductance. The controller (528) receives a signal from the inductive sensor (526) indicating an observed inductance of the portion of the conductive target (532) aligned with the inductive sensor (526). The controller (528) uses a stored relationship between the observed inductance and the position of the actuator (500) to determine the position of the actuator (500) based on the observed inductance. The controller (528) operates the actuator (500) to change the position of the actuator (500) based on the determined position.