Model Studies for the Design of a Servo-anesthesia System |
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200 msec Figure 30 mmHg step analog computer anesthesia machine anesthetic depth arterial concentration autocorrelation Beduhn BMOD,NTOT,CR BPM 60 BPM CALL FDAC CALL RMODEL CALL cardiac output change in reference clock interval concentration of halothane control system criterion function flow of halothane FORMAT(1X fractional partial pressure Fukui Gg(s gradient grey matter partial halothane concentration heart rate hybrid computer model impulse response input level of anesthesia lung MAP in mmHg matter partial pressure maximum length sequence mean arterial pressure ml/sec mmHg MAP mmHg step change number of samples parameter adjustment partition coefficient patient physically-based model PI controller PRBS method PRBS of length pressure of halothane pressure-flow model PROGRAM LOOPS pulmonary RATE AND CONTRACTILITY reference pressure resistance responses of mean result RMODEL CALL RVAL samples per clock saturation limited sec Figure servo-anesthesia system shown in Fig spectral edge frequency Tidal volume transfer function transport model TYPE uptake and distribution ventilator