Aerospace Instrument-Making Annotation << Back IMPROVING THE ACCURACY OF FUZZY ALGORITHMS TO CONTROL THE BEHAVIOR OF AN AUTONOMOUS UNMANNED AIRCRAFT UNDER UNCERTAINTY V.B. Melekhin, M.V. Khachumov The conditions of a spontaneously changing, a priori undescribed air environment are determined, in which it is advisable to use fuzzy algorithms for controlling the flight of an autonomous unmanned aerial vehicle to a given area of the terrain. The tools are proposed that allow comparing the fuzzy values of the state variables of the flight control surfaces of the aircraft and the disturbing factors of the air in the process of choosing the implicative decision rule of the fuzzy con-trol algorithm containing the effective control action. Two methods have been developed to improve the accuracy of fuzzy control algorithms, significantly ex-panding the possibilities of their effective application to control the behavior of complex autonomous objects in unstable conditions of a problematic environment with a high level of uncertainty. Keywords: autonomous unmanned aerial vehicle, unstable air environment, fuzzy control algorithm, control accuracy, state parameters, control actions. DOI: 10.25791/aviakosmos.09.2020.1176 Pp. 03-10.