Patent ID: 6944524
Filing Date: 2005-09-13
Classification: G05D,Y10T

Abstract:
1. An air flow regulator including: a damper; and a pneumatic cylinder operatively connected with the damper to adjust a damper setting; a pressure sensor that indicates a pneumatic pressure in the pneumatic cylinder; and an air pressure regulator operatively connected with the pneumatic cylinder to pressurize or exhaust the pneumatic cylinder responsive to an electrical input indicative of a selected steady state pressure, the air pressure regulator including a calibration table associating steady state pneumatic cylinder pressure values with regulator shut-off pressure values, the calibration table being addressed by the electrical input indicative of an updated steady-state pneumatic cylinder pressure value and retrieving a corresponding shutoff pressure value at which the air pressure regulator ceases the pressurizing or exhausting such that the steady state pressure in the pneumatic cylinder settles at about the selected steady state pressure.