| 摘要 |
A closed loop capacity control method for a respirator. The method comprises: firstly, generating a voltage-flow rate curve of a respirator proportional valve, and calculating a set inspiration flow rate of the respirator according to an actual capacity VT and an inspiration time T of the respirator; and setting an initial control voltage to be a voltage corresponding to the set inspiration flow rate in the voltage-flow rate curve, and during the inspiration time, using a closed loop control algorithm to time-divisionally calculate a voltage controlling an inspiration flow rate until a real-time inspiration flow rate reaches the requirements of the set inspiration flow rate under the control voltage. The method has high precision in controlling flow rate and has fast adjustment time, and the generated flow rate will not overshoot, and will not cause control disorder. |
