ОПРЕДЕЛЕНИЕ ОТКАЗОВ ДАТЧИКОВОЙ ГРУППЫ СИСТЕМЫ ВОЗДУШНЫХ СИГНАЛОВ ПУТЕМ ОРГАНИЗАЦИИ ПЕРЕКРЕСТНОГО КОНТРОЛЯ ПАРАМЕТРОВ

Abstract

The article describes about of the typical methods of air data parametric quorum control,and an analysis of their capabilities to determine parametric failures that occur in the air datasystem. To perform the calculations, the most common types of failures of the path of perceptionand measurement of air pressure of the air signal system, causing catastrophic consequences,were selected, the physical principles of their occurrence were described, the implementation ofwhich made it possible to build mathematical models of signal distortion. Based on the results ofmodeling the operation of typical quorum control methods, and their response to failures artificiallyintroduced into the system, the advantages and disadvantages of the methods used are determined.In order to eliminate the shortcomings found as a result of the analysis, an alternativemethod for determining failures of the sensor group of the air data system is proposed by implementingcross-checking of the parameters obtained from the pneumatic and vane sensor groups ofthe system. For the proposed method, the results of modeling based on real flight data of a mainlineaircraft with parametric failures artificially introduced into them are presented. The possibilityof using the cross-checking algorithm in single-channel systems of air signals of small-sizedaircraft is evaluated. The statement of the research problem is formulated as follows: in order toensure the flight safety of an aircraft when using information in the control loop from a singlechannelair data system, it is necessary to ensure the detection and exclusion of unreliable datafrom the array of information issued by the system to consumers of information. At the same time,the task of detecting and excluding data must be solved by the air data system itself, without usingadditional data from other aircraft systems. Mathematical analysis, numerical modeling, determinationof correction factors and preparation of initial data were carried out in the MathCAD softwareand mathematical complex. Analysis of the results of the studying implemented in theMathCAD PMC cross-checking algorithm showed that the problem of determining the reliabilityof information can be solved autonomously when it implemented a single-channel system of airsignals in an aircraft.