Adaptive autopilot

Details Adaptive autopilot Adaptive autopilot

G - Physics

05

D

341/80

G05D 1/10 (2006.01) G05B 13/04 (2006.01) G05D 1/08 (2006.01)

Patent

CA 2032788

ABSTRACT OF THE DISCLOSURE A control system for the reentry phase of a reentry type vehicle with the vehicle having aerodynamic control surfaces for controlling the attitude of the vehicle during reentry includes an estimating device, such as an extended Kalman filter, for estimating dynamic aerodynamic operational parameters of the vehicle in response to status parameters of the vehicle, a sensing device for supplying the status parameters, an autopilot device for generating a drive command signal in response to the dynamic aerodynamic operational parameters and an actuator device, which may include an electric motor or smaller hydraulic one than prior systems, for controlling the aerodynamic control surfaces in response to the drive command signal. Computation necessary for estimating is used to determine a more accurate drive command signal than is typically available from prior systems, thereby permitting a smaller, lighter weight actuator to be used. If the operating characteristics of the vehicle over the entire flight regime are known, then the status parameters may be used to select the appropriate operating characteristics, which have been previously stored, without need to resort to estimation.

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