| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for controlling a respirator capable of increasing the margin of stability for controlling gas supply mechanism of a respirator. SOLUTION: The flow F of an assist gas is detected and estimated by an observer (54). Next, the flow differenceΔF between the detected flow F and the estimated flow F is determined. Information on the spontaneous respiration pressure Pmus of a patient is collected, and a target pressure Pin to control the gas supply mechanism (20) is computed from the information. By thus computing the target pressure Pin from the flow differenceΔF and adequately selecting a parameter by a regulation transfer function, the margin of the stability limit of the entire system (14) can be increased. Hence, even if the actual entire system varies, a run-away hardly occurs. Compared to the conventional PAV type, the assist response can be improved. COPYRIGHT: (C)2007,JPO&INPIT
|
