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Table 1 PI controller parameters at different pressure setting

From: Control system design for a continuous positive airway pressure ventilator

Pressure Setting
(cmH2O)
Kp KI Pressure Setting
(cmH2O)
Kp KI
4 1.5 0.012 8.5 1.5 0.01
4.5 1.5 0.012 9 1.5 0.01
5 1.5 0.012 9.5 1.5 0.009
5.5 1.5 0.012 10 1.35 0.006
6 1.5 0.012 12 1.35 0.0008
6.5 1.5 0.01 14 1.35 0.0002
7 1.5 0.011 16 1.25 0.0002
7.5 1.5 0.01 18 1.25 0.0002
8 1.5 0.01 20 1.25 0.0002