Patent ID: 8769747

Claim:
A method for adjusting pressure within an air bed comprising: providing or receiving an air bed, the air bed including an air chamber and a pump having a pump housing; selecting a desired pressure setpoint for the air chamber; determining an initial pressure within the pump housing; calculating a pressure target based upon the desired pressure setpoint and a pressure adjustment factor, wherein an inflate pressure adjustment factor is used to calculate the pressure target when the initial pressure within the pump housing is less than the desired pressure setpoint, and wherein a deflate pressure adjustment factor is used to calculate the pressure target when the initial pressure within the pump housing is greater than the desired pressure setpoint; adjusting pressure within the air chamber until a sensed pressure within the pump housing is substantially equal to the calculated pressure target; determining an actual chamber pressure within the air chamber; comparing the actual chamber pressure to the desired pressure setpoint to determine an adjustment factor error; and modifying the pressure adjustment factor based upon the adjustment factor error.