PROBABILITY MODEL FOR CONTROL PARAMETERS IN THE AIRCRAFT'S INFORMATION AND CONTROL SYSTEMS

Abstract

Improving flight safety and operational efficiency of aircraft is largely determined by the quality of operation onboard information management systems. At the same time, special attention should be paid to the assessment of the redundancy level of alarm systems and the control of malfunctions, as well as failures of vital functional systems: operation modes of aircraft engines, flight, autonomous warning systems of dangerous modes (aircraft engine fires, icing of control system elements, proximity to the ground, etc.). In such flight situations, the further development of faults must be localized in a timely manner, since these situations are associated with the survivability of aircraft. Recognition of such situations is possible on the basis of the disclosure of the mechanisms, axiomatic representations and realizations. For this purpose, a theoretical framework has been developed for estimating the probability of occurrence the events (true event, "false" alarm, non-detection), for adjusting information sources by changing the trigger threshold ED, so that at given n a given system OBTAIN providing an equal degree of reduction of false alarm probability p3 and non-detection p2 that is ensure equality p p2 3 = . When applying the proposed method, it is possible to significantly reduce the negative effects of the physical deficiencies of individual information sources on the quality of operation of information and control systems of aircraft. The article proved that the efficiency and quality of automatic control of flight processes essentially depends on the reliability of information received at the input of controlled computing systems, on various meters (so-called information sensors) that monitor the status and progress of the flight process. A methodology for assessing the accuracy and reliability of information with information redundancy is proposed, taking into account the influence of physical deficiencies of real information sources on the quality of operation of aircraft information and control systems (ICS). A probabilistic model has been developed to assess the impact of physical deficiencies of information sources on the quality of ICS of the aircraft and ways to reduce such effects on safety, regularity and efficiency of flights.