Pressure Control System Design for a Closed Crop Growth Chamber

A part of the CELSS Test Facility design effort is the Engineering Development Unit (EDU), a closed crop growth system. The crop growth chamber and system hardware are contained in an enclosure that isolates them from the laboratory environment. The control system includes active differential pressure control. This paper describes a linear optimal quadratic performance index design technique that was used to synthesize a state feedback controller. Performance results of the closed loop linear system as predicted by simulation is presented.