The invention discloses a method, a device and a
respirator for
voltage stabilization of continuous
positive pressure ventilation. The method comprises the following steps: receiving a flow rate of a respirable gas in a pressurized flow, which is measured by a flow sensor, according to a preset time interval; ensuring a second derivative of the flow rate of a preset time point; acquiring an average flow rate, air leakage, an inspiration
tidal volume and
inspiration time; judging whether the average flow rate is greater than the air leakage; if so, determining a
gain value to be a product of a value of a quotient of the inspiration
tidal volume divided by the
inspiration time minus the air leakage and a first coefficient; if not, determining the
gain value to be a product of a value of a quotient of the inspiration
tidal volume divided by the
inspiration time minus the air leakage and a second coefficient, wherein the first coefficient is greater than the second coefficient; determining a
respiration vector which is a product of the
gain value and the second derivative; and controlling a driving
signal of a baseline configuration pressure generator on the basis of the
respiration vector and a pressure generator. The method foresees a flow rate variation trend through the
respiration vector, controls the flow rate of the
current time point, and guarantees stable output pressure of the
respirator.