Capacity control method of the fuzzy adaptivecontroller based on PID control parameter of one Anesthesia machine. The method includes:: a corresponding initial voltage value is obtained according to a scheduled flow valuve, enters a flow sensor as a current voltage value input voltage value A real-time flow valuve and a difference are obtained between real-time flow valuve and scheduled flow valuve, input two-value enters a fuzzy adaptivecontroller proportional plus integral plus derivative controller A voltage value is calculated and exports, by adjusting proportional control coefrficient, the derivative control coefrficient of complete control coefrficient and proportional plus integral plus derivative controller Current voltage value is updated by using voltage value and is inputted identical into flow sensor The process is repeated until the flow valuve exported by flow sensor is met the requirements. By method, an Anesthesia machine can export a stable and accurate tidal volume in the case where different predetermined values and different patients.
