Patent ID: 6574532
Filing Date: 2003-06-03
Classification: G05D

Abstract:
A path controller for a parachute whose path is affected by wind currents and controlled by signals from a servo device, said path controller comprising a control device receiving as input signals an actual path azimuth angle (&khgr;) and a set path azimuth angle (&khgr;S) and producing a steering control signal (v) for said servo device, said control device being provided with a control function which is based on deviation (&Dgr;&khgr;) of the actual path azimuth angle from the set path azimuth angle to produce said steering control signal (v), said control function being a sine curve representing a value of the steering control signal (v) with respect to &Dgr;&khgr; wherein when &Dgr;&khgr;=O, said curve has a negative slope, said curve changing sign when going from âˆ’&Dgr;&khgr; to +&Dgr;&khgr; and after each interval when &Dgr;&khgr;=&pgr;, said curve in said intervals having the same sign.