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Pneumatic generator system for simulating operating conditions of an aircraft

  • US 6,955,184 B2
  • Filed: 05/29/2003
  • Issued: 10/18/2005
  • Est. Priority Date: 05/29/2003
  • Status: Expired due to Fees
First Claim
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1. A pneumatic function generator system for maintaining a desired pressure or a desired rate of pressure change with respect to time, comprising:

  • a servo valve for controlling the amount of fluid traveling therethrough;

    a primary sensor for measuring the pressure of the fluid and for generating an analog signal corresponding to the pressure of the fluid;

    a housing defining a chamber;

    a temperature sensor disposed in the chamber for measuring the temperature of the primary sensor;

    a heating device disposed in the chamber, for adjusting the temperature of the primary sensor;

    an analog-to-digital module for converting the analog signal to a digital value;

    an input port, coupled to the analog-to-digital module, for receiving an external analog rate or pressure command signal; and

    a digital device for receiving the digital value and, depending on the digital value, generating a control signal that is used to control the opening and closing of the servo valve.

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