US 12,442,553 B2
Critical environment feedforward-feedback control system with room pressure and temperature control
Jack A. Peterson, Brookfield, WI (US); and Kirk H. Drees, Cedarburg, WI (US)
Assigned to TYCO FIRE & SECURITY GMBH, Neuhausen am Rheinfall (CH)
Filed by Tyco Fire & Security GmbH, Neuhausen am Rheinfall (CH)
Filed on Mar. 30, 2022, as Appl. No. 17/709,252.
Prior Publication US 2023/0314030 A1, Oct. 5, 2023
Int. Cl. F24F 11/63 (2018.01); F24F 11/46 (2018.01); F24F 11/74 (2018.01); F24F 110/10 (2018.01); F24F 110/30 (2018.01); F24F 110/40 (2018.01)
CPC F24F 11/63 (2018.01) [F24F 11/46 (2018.01); F24F 11/74 (2018.01); F24F 2110/10 (2018.01); F24F 2110/30 (2018.01); F24F 2110/40 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A feedforward-feedback controller for integrated temperature and pressure control of a building space, the controller comprising one or more processing circuits configured to:
generate a supply air flow rate setpoint using a combined feedforward-feedback control process that (i) proactively compensates for a feedforward air flow disturbance in the building space and (ii) reactively compensates for a feedback air pressure error in the building space;
generate a supply air temperature setpoint using, as inputs, a zone temperature setpoint and the supply air flow rate setpoint;
modify the supply air flow rate setpoint in response to the supply air temperature setpoint violating a supply air temperature limit; and
operate building equipment to provide the supply air to the building space at the supply air flow rate setpoint and the supply air temperature setpoint.