The invention discloses a
backstepping method for determining a meteorological parameter MVD based on a wing
icing thickness, and relates to the technical field of ice shape prediction and detection of aircraft
icing. The meteorological parameter MVD can be detected in real time without changing shapes of wings during flight, and the
backstepping method isapplied to aircraft
icing airworthiness certification, and icing environment conditions that meet requirements are detected. The
backstepping method comprises the steps that
icing conditions under different flight conditions are calculatedaccording to the relationship amonga
liquid water content LWC, an average effective droplet
diameter MVD and an
ambient air temperature T,and an icing thickness
database of the icing thickness changing with times is established; and flight conditions, the temperature T, and a h-t curve of the icing thickness changing with the timesare provided in real time, time-icing thickness interpolation and a standard deviation are calculated by using aconstant correction positive coefficientinverse distance weighted interpolation
algorithm, and the backstepping optimal MVD value is determined by the least square method. The backstepping method for determining the meteorological parameter MVD based on the wing icing thickness is high in accuracy and small in error, the real-time measurement can be achieved, the icingairworthiness certification is provided with an effective and reliable
technical support, and the application prospect is promising.