Accession Number:

ADD012798

Title:

Electronically Compensated Pressure Dilution Demand Regulator.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

Report Date:

1987-03-10

Pagination or Media Count:

5.0

Abstract:

This patent relates to a dilution control oxygen regulator for providing a desired oxygen concentration at different altitudes and pressures. Two valves supply oxygen and air to a recipients mask. A pressure which is compared with a prescribed pressure command signal for a particular altitude to produce a pressure error. The error signal is compensated by a proportional-plus-integral controller, and is biased between the two gas valves proportional to an oxygen concentration schedule which prescribes a desired oxygen concentration percentage based on altitude. The biased and compensated error signal is used as valve opening displacement commands for establishing desired valve opening areas. A feedback loop around the electromechanical valve actuator means improves the stability and accuracy of valve settings.

Subject Categories:

  • Life Support Systems
  • Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE