Application of
Pseudo-Derivative-Feedback Algorithm in Greenhouse Air Temperature Control
Albert Setiawan
Abstract<
Pseudo-Derivative-Feedback (PDF) control is compared to Proportional-Integral
(PI) control through simulation using an approximated dynamic system thermal
model of the greenhouse. The effects of time delays on control system performance
for both PDF and PI control are demonstrated. Results showed PDF control to
have a better load handling capability than PI control. PDF control was exceptionally
better than PI for systems without time delay and significantly better for
systems with time delay. The algorithm was then tested to control a greenhouse
section and showed satisfactory results.
