METHOD TO CONTROL ICING AND DEVICE TO THIS END Russian patent published in 2010 - IPC B64D15/20 

FIELD: instrument making.

SUBSTANCE: proposed method comprises measuring actual and imaginary fractions of complex resistance of exciting converter to search and entrap resonance frequency, calculating coefficient of normalisation of complex resistance actual part to normalise resonance Q-factor by resistance, calculating reduced resonator stiffness, stiffness normalisation factor, normalising resonator frequency by stiffness to compare it with reference frequency of clean resonator, effecting control by these data of icing, and calculating ice thickness and icing intensity. Proposed device incorporates indication and control unit and icing signaling device. The latter comprises transceiver, signal processor, impedance transducer, hate, temperature transducer, exciting converter, resonator and heater. Proposed system proceeds from the property of mechanical oscillatory system to very resonance parametres in response to added mass and its physical properties, and from correspondence of complex resistance parametres of exciting converter to reduced parametres of mechanical oscillatory system.

EFFECT: higher accuracy and validity of data procured in icing control.

2 cl, 1 dwg