INTEGRATED SMART ACTUATOR AND VALVE DEVICE

A cascaded control system configured to modify an environmental condition of a building includes a valve configured to regulate a flow of a fluid through a conduit, an actuator including a motor and a drive device, and a communications mechanism. The communications mechanism is configured to receive...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Duenkel, Gerald A, Doll, Herbert J, Drees, Kirk H, Passoni, Marcello
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	A cascaded control system configured to modify an environmental condition of a building includes a valve configured to regulate a flow of a fluid through a conduit, an actuator including a motor and a drive device, and a communications mechanism. The communications mechanism is configured to receive a flow rate setpoint from an external control device of an outer control loop. The cascaded control system further includes a processing circuit coupled to the motor and the communications mechanism. The processing circuit is configured to determine an actuator position setpoint using a cascaded feedback control mechanism based on the flow rate setpoint and a flow rate measurement from a flow rate sensor of an inner control loop and to operate the motor to drive the drive device to the actuator position setpoint.