1. Pressure System Amanda Newman Andy Patel Bryan Cuervo September 28 th 2005 ENGR. 329 UTC Engineering

2. Outline of The Presentation Background of the Pressure system SSOC (Steady State Operating Curve) Step response analysis FOPDT Parameters Step response FOPDT Model Comparing Experimental vs. Model Conclusions and suggestions

3. Background of Pressure System

4. Pressure System Schematic

5. Block Diagram for the system

6. Lower Range Middle Range Upper Range

7. Suggested Operating Range SSOC –Non-linear –1-10 cm-H2O Operational output range –50%-100% Operational input range –Slope differs for different operating ranges

13. The FOPDT Parameters are: K = Gain t 0 = Dead time T(tau)= Time constant A = Size of the Step Td = Time at which the step occurs Inbl = Input Baseline Outbl = Output Baseline

14. Experimental FOPDT Parameters are: Gain, K: 0.109 cm-H 2 0 Dead time, t o : 0.480 Time constant, Tau: 2.016

20. Model FOPDT Parameters are: Gain, K: 0.110 cm-H 2 0 Dead time, t o : 0.725 Time constant, Tau: 2.056

24. Conclusions Found the Model FOPDT parameters and compared them to the experimental FOPDT parameters Found that the GAIN and TAU were very similar, but t o differed a lot. Ideal operation input range is: 5%-100%