Adaptive control system for separation of aircraft motion on roll and sideslip

The requirements to maneuver a modern aircraft involve the development and realization of advanced control of a longitudinal and lateral aircraft motion. The manual control system for independent motion control of an aircraft on rolling and sideslip angles is given in [1]. The system depends upon a real-time measurement of air-dynamic coefficients of the aircraft, or requires the information from the tabulated parameters on all regimes of the aircraft motion. However, methods of precise measurement of air-dynamic coefficients in non-stationary conditions of the aircraft motion are not yet available at the present time. The exact parameters for all regimes of the aircraft motion cannot be obtained from a-priory measurements either. Therefore, a complete decoupled motion of an aircraft cannot be achieved. In this paper the solution for a decoupled motion of an aircraft is obtained in the class of non-searching adaptive control systems with a reference model [2]. The new algorithms developed in this paper achieve a decoupled motion with desirable dynamic precision even in the conditions of high non-stationary of parameters. The robustness of the control system to the interaction of subsystems is accomplished as well.