×

Automatic velocity control system for aircraft

  • US 7,931,238 B2
  • Filed: 09/12/2005
  • Issued: 04/26/2011
  • Est. Priority Date: 09/12/2005
  • Status: Active Grant
First Claim
Patent Images

1. A flight control system for an aircraft, the system comprising:

  • means for receiving an input signal representing a selected value of a first parameter, the first parameter being one of the airspeed of the aircraft and inertial velocity of the aircraft;

    a primary feedback loop for generating a primary error signal, the primary error signal being proportional to the difference between the selected value of the first parameter and a measured value of the first parameter; and

    a secondary feedback loop for generating a secondary error signal, the secondary error signal being proportional to the difference between the selected value of the first parameter and a measured value of a second flight parameter, the second parameter being the other of the airspeed of the aircraft and inertial velocity of the aircraft;

    wherein the primary error signal and the secondary error signal are summed to produce a velocity error signal;

    a bypass for integrating the primary error signal with the velocity error signal to produce an actuator command signal, andwherein the actuator command signal is adapted to be used for operating devices on the aircraft to control the first parameter of the aircraft, such that the primary error signal is minimized.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×