METHOD FOR AUTOMATIC CONTROL OF DE-ICY PROCESSING OF ROAD AND AERODROME COATINGS Russian patent published in 2020 - IPC E01H10/00 E01C11/24 

FIELD: vehicles.

SUBSTANCE: invention relates to control methods of working processes of machines with disc equipment for distribution of liquid de-icing reagents on road and aerodrome coatings. Method for automatic control of anti-icing processing of road and aerodrome coatings consists in the fact that during operation the control system installed on the machine is used, containing control unit with microcontroller and connected to it sensor unit to measure at least speed Vm of machine movement and flow q_f reagents, as well as control panel with display. First, in the control unit, a base of operational parameters is formed with information on the form of the reagent, on the corresponding speed Vm of the machine movement, pressure Ps of the reagent supply, frequency ω rotation of distribution discs and flow rate q_n reagent. Enter the calculated dependence of the width and the distribution zone actual flow rate q_f reagents of operational parameters, such as machine speed Vm and frequency ω rotation of distribution discs. Before starting the work with the remote control system make choice of the type of reagent used and establish the required flow rate q_n and reactant distribution zone width l, continuously providing in process of processing specified width l of distribution zone and consumption rate of selected type of reagent. In the sensor unit, sensors are used to record the wind speed and direction, as well as linear and angular movements of the distribution disk. When forming databases in the control unit, a database of structural parameters of the working equipment with information on the diameter of the distribution disk, length and number of disc blades, arrangement of nozzles, their type and diameter of nozzle openings, database of meteorological parameters, containing data on actual direction and speed Vv of wind, as well as database of geometrical parameters of working equipment, containing data on angle α inclination of distribution disc relative to its rotation axis and height of H disks above coating. Besides, in addition to the microcontroller memory the information containing description of mathematical models of movement of liquid reagent on the working equipment and in air is introduced, as well as design dependencies of distribution zone shape and actual consumption q_f reagents depending on structural, geometric and meteorological parameters and numerical quality criteria of distribution is density of distribution of drops on area of zone under ideal conditions and allowable deviation δ of density under real distribution conditions. At that, during reagent distribution, calculation is made for distribution zone width l, distribution discs overlapping area b and nonuniformity of reagent distribution is determined numerically as deviation δ actual density of distribution of reagent on area of distribution zone from density calculated under ideal conditions in absence of wind. In case the required values of parameters l and b are not achieved, as well as in case, if deviation δ exceeds allowable maximum value δ_max, selection of operating parameters of working equipment and actual flow rate q_f reagent, using databases, containing mathematical models and numerical criteria of distribution quality.

EFFECT: invention increases quality of anti-icing processing of coatings due to the most complete accounting of operational, meteorological, geometric and structural parameters at simultaneous provision of continuous monitoring and maintenance of optimal flow rate and level of uniform distribution of liquid de-icing reagents along road and aerodrome coatings.

1 cl, 2 dwg