Aerospace Instrument-Making Annotation << Back One of the methods of the synthesis of nonlinear automatic systems of uavs flight trajectory-control Terentiev V.M. The paper suggests a methodology of the synthesis of nonlinear systems of UAVs tra-jectory-motion automatic control using new approaches. These approaches deal with the construction of analytical program-invariant or program-inverse constructions in combined control systems. The method for constructing the analytical program-invariant constructions is to find invariant relations from which program controls are defined as feedforwards in the combined control systems. The analytical program-inverse constructions are made on the basis of the methods of dynamics inverse problems at the points of balance of dynamic systems. The stability of the structure of control with the analytical program-inverse constructions and a linear regulator are shown. On the basis of these approaches, the problems of spatial control of the manouevers, vertical speed and altitude of UAVs flight are solved. The formulae are presented which can be used in the engineering design. The results of the theoretical studies are validated by the mathematical modeling. Some algorithms, which are synthesized by this method, are realized in the «Dan»-aerial-target automatic control systems. Key words: UAV (unmanned aerial vehicle), stability, combined control systems, Lyapunov’s function, modeling. Contacts: E-mail: pilot@kbpa.ru Pp. 32-49.